Hotel Management System v1.0 was discovered to contain a SQL injection vulnerability via the username parameter at the login page.

**Contributor(s):** kingthorin  

**Overview**

A SQL injection attack consists of insertion or “injection” of a SQL query via the input data from the client to the application. A successful SQL injection exploit can read sensitive data from the database, modify database data (Insert/Update/Delete), execute administration operations on the database (such as shutdown the DBMS), recover the content of a given file present on the DBMS file system and in some cases issue commands to the operating system. SQL injection attacks are a type of injection attack, in which SQL commands are injected into data-plane input in order to affect the execution of predefined SQL commands.

**Threat Modeling**

*   SQL injection attacks allow attackers to spoof identity, tamper with existing data, cause repudiation issues such as voiding transactions or changing balances, allow the complete disclosure of all data on the system, destroy the data or make it otherwise unavailable, and become administrators of the database server.
*   SQL Injection is very common with PHP and ASP applications due to the prevalence of older functional interfaces. Due to the nature of programmatic interfaces available, J2EE and ASP.NET applications are less likely to have easily exploited SQL injections.
*   The severity of SQL Injection attacks is limited by the attacker’s skill and imagination, and to a lesser extent, defense in depth countermeasures, such as low privilege connections to the database server and so on. In general, consider SQL Injection a high impact severity.

**How to Avoid SQL Injection Vulnerabilities**

See the OWASP SQL Injection Prevention Cheat Sheet. See the OWASP Query Parameterization Cheat Sheet.

**How to Review Code for SQL Injection Vulnerabilities**

See the OWASP Code Review Guide article on how to Review Code for SQL Injection vulnerabilities.

**How to Test for SQL Injection Vulnerabilities**

See the OWASP Testing Guide for information on testing for SQL Injection vulnerabilities.

**How to Bypass Web Application Firewalls with SQLi**

See the OWASP Article on using SQL Injection to bypass a WAF

**Description**

SQL injection attack occurs when:

1.  An unintended data enters a program from an untrusted source.
2.  The data is used to dynamically construct a SQL query

The main consequences are:

*   **Confidentiality**: Since SQL databases generally hold sensitive data, loss of confidentiality is a frequent problem with SQL Injection vulnerabilities.
*   **Authentication**: If poor SQL commands are used to check user names and passwords, it may be possible to connect to a system as another user with no previous knowledge of the password.
*   **Authorization**: If authorization information is held in a SQL database, it may be possible to change this information through the successful exploitation of a SQL Injection vulnerability.
*   **Integrity**: Just as it may be possible to read sensitive information, it is also possible to make changes or even delete this information with a SQL Injection attack.

**Risk Factors**

The platform affected can be:

*   Language: SQL
*   Platform: Any (requires interaction with a SQL database)

SQL Injection has become a common issue with database-driven web sites. The flaw is easily detected, and easily exploited, and as such, any site or software package with even a minimal user base is likely to be subject to an attempted attack of this kind.

Essentially, the attack is accomplished by placing a meta character into data input to then place SQL commands in the control plane, which did not exist there before. This flaw depends on the fact that SQL makes no real distinction between the control and data planes.

**Examples****Example 1**

In SQL: select id, firstname, lastname from authors

If one provided: Firstname: evil'ex and Lastname: Newman

the query string becomes:

select id, firstname, lastname from authors where firstname = 'evil'ex' and lastname ='newman'

which the database attempts to run as:

Incorrect syntax near il' as the database tried to execute evil.

A safe version of the above SQL statement could be coded in Java as:

    String firstname = req.getParameter("firstname");
    String lastname = req.getParameter("lastname");
    // FIXME: do your own validation to detect attacks
    String query = "SELECT id, firstname, lastname FROM authors WHERE firstname = ? and lastname = ?";
    PreparedStatement pstmt = connection.prepareStatement( query );
    pstmt.setString( 1, firstname );
    pstmt.setString( 2, lastname );
    try
    {
        ResultSet results = pstmt.execute( );
    }
    

**Example 2**

The following C# code dynamically constructs and executes a SQL query that searches for items matching a specified name. The query restricts the items displayed to those where owner matches the user name of the currently-authenticated user.

    ...
    string userName = ctx.getAuthenticatedUserName();
    string query = "SELECT * FROM items WHERE owner = "'"
                    + userName + "' AND itemname = '"
                    + ItemName.Text + "'";
    sda = new SqlDataAdapter(query, conn);
    DataTable dt = new DataTable();
    sda.Fill(dt);
    ...
    

The query that this code intends to execute follows:

    SELECT * FROM items
    WHERE owner =
    AND itemname = ;
    

However, because the query is constructed dynamically by concatenating a constant base query string and a user input string, the query only behaves correctly if itemName does not contain a single-quote character. If an attacker with the user name wiley enters the string "name' OR
'a'='a" for itemName, then the query becomes the following:

    SELECT * FROM items
    WHERE owner = 'wiley'
    AND itemname = 'name' OR 'a'='a';
    

The addition of the OR 'a'='a' condition causes the where clause to always evaluate to true, so the query becomes logically equivalent to the much simpler query:

SELECT * FROM items;

This simplification of the query allows the attacker to bypass the requirement that the query only return items owned by the authenticated user; the query now returns all entries stored in the items table, regardless of their specified owner.

**Example 3**

This example examines the effects of a different malicious value passed to the query constructed and executed in Example 1. If an attacker with the user name hacker enters the string "name'); DELETE FROM items; --" for itemName, then the query becomes the following two queries:

    SELECT * FROM items
    WHERE owner = 'hacker'
    AND itemname = 'name';
    
    DELETE FROM items;
    
    --'
    

Many database servers, including Microsoft® SQL Server 2000, allow multiple SQL statements separated by semicolons to be executed at once. While this attack string results in an error in Oracle and other database servers that do not allow the batch-execution of statements separated by semicolons, in databases that do allow batch execution, this type of attack allows the attacker to execute arbitrary commands against the database.

Notice the trailing pair of hyphens (--), which specifies to most database servers that the remainder of the statement is to be treated as a comment and not executed. In this case the comment character serves to remove the trailing single-quote left over from the modified query. In a database where comments are not allowed to be used in this way, the general attack could still be made effective using a trick similar to the one shown in Example 1. If an attacker enters the string "name'); DELETE FROM items; SELECT \* FROM items WHERE 'a'='a", the following three valid statements will be created:

    SELECT * FROM items
    WHERE owner = 'hacker'
    AND itemname = 'name';
    
    DELETE FROM items;
    
    SELECT * FROM items WHERE 'a'='a';
    

One traditional approach to preventing SQL injection attacks is to handle them as an input validation problem and either accept only characters from an allow list of safe values or identify and escape a deny list of potentially malicious values. An allow list can be a very effective means of enforcing strict input validation rules, but parameterized SQL statements require less maintenance and can offer more guarantees with respect to security. As is almost always the case, deny listing is riddled with loopholes that make it ineffective at preventing SQL injection attacks. For example, attackers can:

*   Target fields that are not quoted
*   Find ways to bypass the need for certain escaped meta-characters
*   Use stored procedures to hide the injected meta-characters

Manually escaping characters in input to SQL queries can help, but it will not make your application secure from SQL injection attacks.

Another solution commonly proposed for dealing with SQL injection attacks is to use stored procedures. Although stored procedures prevent some types of SQL injection attacks, they fail to protect against many others. For example, the following PL/SQL procedure is vulnerable to the same SQL injection attack shown in the first example.

    procedure get_item (
        itm_cv IN OUT ItmCurTyp,
        usr in varchar2,
        itm in varchar2)
    is
        open itm_cv for ' SELECT * FROM items WHERE ' ||
                'owner = '''|| usr ||
                ' AND itemname = ''' || itm || '''';
    end get_item;
    

Stored procedures typically help prevent SQL injection attacks by limiting the types of statements that can be passed to their parameters. However, there are many ways around the limitations and many interesting statements that can still be passed to stored procedures. Again, stored procedures can prevent some exploits, but they will not make your application secure against SQL injection attacks.

*   SQL Injection Bypassing WAF
*   Blind SQL Injection
*   Code Injection
*   Double Encoding
*   ORM Injection

**References**

*   SQL Injection Knowledge Base - A reference guide for MySQL, MSSQL and Oracle SQL Injection attacks.
*   GreenSQL Open Source SQL Injection Filter - An Open Source database firewall used to protect databases from SQL injection attacks.
*   An Introduction to SQL Injection Attacks for Oracle Developers
    *   This also includes recommended defenses.

Category:Injection

CVE-2022-28110: SQL Injection | OWASP Foundation

CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. To exploit this vulnerability, an attacker must use the "File" parameter to upload a PHP payload to get a reverse shell from the vulnerable host.

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**CMSimple\_XH 1.7.5**

Latest

Latest

 cmb69 released this

· 99 commits to master since this release

1.7.5

This tag was signed with the committer’s **verified signature**.

 cmb69 Christoph M. Becker

GPG key ID: D66C9593118BCCB6 Learn about vigilant mode.

3f7f661

This commit was signed with the committer’s **verified signature**.

 cmb69 Christoph M. Becker

GPG key ID: D66C9593118BCCB6 Learn about vigilant mode.

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See the release announcement on our website for information and direct download links.

In der Release-Ankündigung auf unserer Website findet ihr Informationen und direkte Download-Links.

CVE-2021-42645: Release CMSimple_XH 1.7.5 · cmsimple-xh/cmsimple-xh

Researchers say a hacker is selling access to quality malware for chump change.

Researchers say a hacker is selling access to quality malware for chump change.

For about the price of a cup of Starbucks latte, a hacker is renting out a remote access trojan designed to backdoor targeted networks.

Dubbed as Dark Crystal RAT (or DCRat), the malware is being peddled online to hackers in Russian by a lone rookie malware writer with a penchant for cut-rate pricing.

“DCRat is one of the cheapest commercial RATs we’ve ever come across. The price for this backdoor starts at ($6) for a two-month subscription, and occasionally dips even lower during special promotions,” according to BlackBerry researchers who published their findings on Monday.

  
BlackBerry said sales of the budget RAT are being facilitated by the cybercriminal that goes by the name “boldenis44” or “crystalcoder.”

Capabilities of the RAT include a “stealer/client executable”, a single PHP page, which serves as the command-and-control endpoint and an administrator tool.

**A Breakdown of DCRat**

DCRat is, in some ways, amateurish, researchers assert. “There are certainly programming choices in this threat that point to this being a novice malware author,” they wrote.

“The administrator tool is a standalone executable written in the JPHP programming language, an obscure implementation of PHP that runs on a Java virtual machine,” BlackBerry wrote.

JPHP, they noted, is an easy-to-use language aimed at novice developers of desktop games. “The malware author may have chosen this format because it’s not particularly well-known, or they might have lacked programming skills in other, more mainstream languages.”

In another odd quirk, researchers note, is the malware author “implemented a function that displays a randomly generated number of ‘servers working’ and ‘users online’ that are meant to appear as statistics in the background of the administrator tool. It could be that they are trying to make their tool appear more popular, or that they just didn’t know how to implement an accurate counter and have employed a pseudo-counter in the meantime as a placeholder.”

However, in most respects, DCRat punches well above its weight.

Along with the stealer, command-and-control interface and administrator tool, the malware is highly customizable, demonstrating a higher level of attempted sophistication. The modular architecture allows RAT customers to create and share their own plugins.

“DCRat’s modular architecture and bespoke plugin framework make it a very flexible option,” the researchers wrote, “helpful for a range of nefarious uses. This includes surveillance, reconnaissance, information theft, DDoS attacks, as well as dynamic code execution in a variety of different languages.”

Customization prevents DCRat from growing stale, even after three years. That, and the constant care and attention its author gives it. “The administrator tool and the backdoor/client are regularly updated with bug fixes and new features; the same applies to officially released plugins.” The researchers noted a particular case in 2020, when Mandiant published an in-depth look at the DCRat client. “Just days after this report was released,” to combat the unwanted attention, “the malware author shifted distribution of the RAT to a new domain.”

**Is DCRat an Outlier or an Omen?**

Current is about $7 for a two-month lease. For a year, $33 and for a lifetime subscription $63.

Researchers speculate the low price is because the criminals behind the malware are just looking for attention. “It could be that they’re simply casting a wide net,” the researchers theorized, “trying to get a little money from a lot of maliciously minded people. It could also be that they have an alternative source of funding, or this is a passion project rather than their main source of income.”

It remains to be seen whether DCRat will be an outlier on cybercrime forums, or a new precedent. The implications could be significant. If effective malware is as cheap as a cup of coffee, how many more people might be lured into trying it out? And how much more capable might their attacks be?

“The biggest, flashiest threat groups might get their name in lights,” the researchers concluded, “but they aren’t necessarily the cybercriminals that keep security practitioners up at night.”

Low-rent RAT Worries Researchers

Stored XSS in Add New Employee Form in Sourcecodester Employee Daily Task Management System 1.0 Allows Remote Attacker to Inject/Store Arbitrary Code via the Name Field.

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Explore CMS v1.0 was discovered to contain a SQL injection vulnerability via a /page.php?id= request.

    # Exploit Title: explore CMS  - Boolean Based SQL Injection# Date: 19/03/2022# Exploit Author: Sajibe Kanti# Vendor Name : EXPLORE IT# Vendor Homepage: https://exploreit.com.bd# CVE: On Request# POC#SQL InjectionSQL injection is a web security vulnerability that allows an attackerto interfere with the queries that an application makes to itsdatabase.explore CMS is vulnerable to the SQL Injection in 'id' parameter ofthe 'page' page.#Steps to reproduceFollowing URL is vulnerable to SQL Injection in the 'id' field.GET /page.php?id=1%27%20OR%201%3d1%20OR%20%27ns%27%3d%27ns HTTP/1.1Host: www.gdc.gov.bdAccept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8Accept-Encoding: gzip, deflateAccept-Language: en-us,en;q=0.5Cache-Control: no-cacheCookie: PHPSESSID=b4c39f2ff3b9470f39bc088ab9ba9320Referer: https://www.gdc.gov.bd/User-Agent: Mozilla/5.0 (Windows NT 10.0; x64) AppleWebKit/537.36(KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36HTTP/1.1 200 OKcontent-encoding:server: LiteSpeedConnection: Keep-AliveKeep-Alive: timeout=5, max=100content-type: text/html; charset=UTF-8transfer-encoding: chunkeddate: Thu, 17 Mar 2022 07:27:21 GMTvary: Accept-Encoding10.3.34-MariaDBServer accepts the payload and the response get delayed by 7 seconds.#ImpactAn attcker can compromise the database of the application by manualmethod or by automated tools such as SQLmap.-- ThanksSajibe Kanti

CVE-2022-27412: Explore CMS 1.0 SQL Injection ≈ Packet Storm

A stored cross-site scripting (XSS) vulnerability in PHProjekt PhpSimplyGest v1.3.0 allows attackers to execute arbitrary web scripts or HTML via a project title.

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#php