#dos

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v4 8.7 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: APOGEE PXC and TALON TC Series Vulnerabilities: Inadequate Encryption Strength, Out-of-bounds Read 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to perform a denial of service using a out-of-bounds read forcing the device to enter a cold state and a vulnerability that would allow an attacker to decrypt the passwords of the device. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Siemens reports that the following products are affected: APOGEE PXC Series (P2 Ethernet): All versions APOGEE PXC Series (BACnet): All ver...

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v3 7.5 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: RUGGEDCOM APE1808 Devices Vulnerabilities: Out-of-bounds Read, Insertion of Sensitive Information Into Sent Data, Allocation of Resources Without Limits or Throttling, Integer Overflow or Wraparound, Path Traversal, Out-of-bounds Write, HTTP Request/Response Splitting 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to cause a denial-of service condition, perform a machine-in-the middle attack (MITM), escalate privileges, execute unauthorized code, and access unauthorized systems and information. 3. TECHNICAL DET...

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v4 8.7 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: SIMATIC S7-1200 CPU Family Vulnerabilities: Improper Resource Shutdown or Release, Improper Validation of Syntactic Correctness of Input 2. RISK EVALUATION The affected devices do not correctly process certain special crafted packets sent to Port 80/tcp and Port 102/tcp, which could allow an attacker to cause a denial of service in the device. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Siemens reports the following products are affected: Siemens SIPLUS S7-1200 CPU 1214 DC/DC/RLY (6AG1214-1HG40-2XB0): vers:all/<V4.7 Siemens SIPLUS S7-1200 CPU 1212 DC/DC/RL...

### Impact Chains using affected versions of Packet Forward Middleware in their IBC Transfer stack are vulnerable to an attack in which there is a potential denial of service. This affects IBC transfers for any asset which is being transferred between another chain and its native chain. We recommend upgrading as soon as possible. __THIS IS A STATE BREAKING CHANGE__ ### Patches Versions [7.2.1](https://github.com/cosmos/ibc-apps/releases/tag/middleware%2Fpacket-forward-middleware%2Fv7.2.1) and [8.1.1](https://github.com/cosmos/ibc-apps/releases/tag/middleware%2Fpacket-forward-middleware%2Fv8.1.1) are patched. ### Workarounds N/A ### References N/A

### Summary This report finds 2 availability issues due to the regex used in the `parse-duration` npm package: 1. An event loop delay due to the CPU-bound operation of resolving the provided string, from a 0.5ms and up to ~50ms per one operation, with a varying size from 0.01 MB and up to 4.3 MB respectively. 2. An out of memory that would crash a running Node.js application due to a string size of roughly 10 MB that utilizes unicode characters. ### PoC Refer to the following proof of concept code that provides a test case and makes use of the regular expression in the library as its test case to match against strings: ```js // Vulnerable regex to use from the library: import parse from './index.js' function generateStressTestString(length, decimalProbability) { let result = ""; for (let i = 0; i < length; i++) { if (Math.random() < decimalProbability) { result += "....".repeat(99); } result += Math.floor(Math.random() * 10); } return result; } function ...

### Summary Koa uses an evil regex to parse the `X-Forwarded-Proto` and `X-Forwarded-Host` HTTP headers. This can be exploited to carry out a Denial-of-Service attack. ### PoC Coming soon. ### Impact This is a Regex Denial-of-Service attack and causes memory exhaustion. The regex should be improved and empty values should not be allowed.

Microsoft’s February Patch Tuesday addresses 63 security vulnerabilities, including two actively exploited zero-days. Update your systems now to…

More than half of attacks on Indian businesses come from outside the country, while 45% of those targeting consumers come from Cambodia, Myanmar, and Laos.

Microsoft today issued security updates to fix at least 56 vulnerabilities in its Windows operating systems and supported software, including two zero-day flaws that are being actively exploited.

**According to the CVSS metric, successful exploitation of this vulnerability has a high impact on availability (A:H). What does that mean for this vulnerability?** An attacker can send specially crafted packets which could affect availability of the service and result in Denial of Service (DoS).