CVE-2023-46234
Remote Code Execution (RCE) vulnerability in browserify-sign (npm)
What is CVE-2023-46234 About?
Versions of the 'mysql2' package before 3.9.4 are vulnerable to Remote Code Execution (RCE). This occurs through improper validation of 'supportBigNumbers' and 'bigNumberStrings' values within the 'readCodeFor' function. A successful exploit can lead to arbitrary code execution, requiring the attacker to control these specific input values.
Affected Software
Technical Details
The vulnerability in the 'mysql2' package (versions prior to 3.9.4) allows for Remote Code Execution (RCE) due to improper validation within the 'readCodeFor' function. Specifically, the 'supportBigNumbers' and 'bigNumberStrings' configuration values are not adequately sanitized or validated. An attacker can manipulate these values, potentially through crafted input or configuration, to inject malicious code during the processing of data within 'readCodeFor'. This lack of validation allows arbitrary code to be executed in the context of the application using the 'mysql2' library when parsing data, leading to a remote code execution vulnerability.
What is the Impact of CVE-2023-46234?
Successful exploitation may allow attackers to execute arbitrary commands, take full control of the affected system, or deploy malware.
What is the Exploitability of CVE-2023-46234?
Exploitation involves manipulating the 'supportBigNumbers' and 'bigNumberStrings' values that are processed by the 'readCodeFor' function. This is a complex exploit, requiring an understanding of the internal workings and data handling of the 'mysql2' package. No authentication or specific privileges are necessarily required if these values can be influenced by unauthenticated input. This is a remote exploitation scenario, depending on how the application handles and processes external data that eventually reaches the vulnerable function. The risk is elevated when applications directly expose configuration or data processing options to untrusted users.
What are the Known Public Exploits?
| PoC Author | Link | Commentary |
|---|---|---|
| No known exploits | ||
What are the Available Fixes for CVE-2023-46234?
About the Fix from Resolved Security
The patch corrects the signature parameter validation in checkValue by ensuring that values must be strictly less than q (using b.cmp(q) >= 0), preventing invalid DSA signatures where the value could be equal to or greater than q. This fixes CVE-2023-46234 by blocking acceptance of out-of-range signature values, which could have previously allowed forged signatures to be validated as legitimate.
Available Upgrade Options
- browserify-sign
- >2.6.0, <4.2.2 → Upgrade to 4.2.2
Struggling with dependency upgrades?
See how Resolved Security's drop-in replacements make it simple.
Book a demoAdditional Resources
- https://github.com/browserify/browserify-sign
- https://github.com/browserify/browserify-sign/security/advisories/GHSA-x9w5-v3q2-3rhw
- https://www.debian.org/security/2023/dsa-5539
- https://nvd.nist.gov/vuln/detail/CVE-2023-46234
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3HUE6ZR5SL73KHL7XUPAOEL6SB7HUDT2
- https://lists.debian.org/debian-lts-announce/2023/10/msg00040.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6PVVPNSAGSDS63HQ74PJ7MZ3MU5IYNVZ
- https://github.com/browserify/browserify-sign/commit/85994cd6348b50f2fd1b73c54e20881416f44a30
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3HUE6ZR5SL73KHL7XUPAOEL6SB7HUDT2/
- https://www.debian.org/security/2023/dsa-5539
What are Similar Vulnerabilities to CVE-2023-46234?
Similar Vulnerabilities: CVE-2023-46604 , CVE-2023-50164 , CVE-2023-38035 , CVE-2023-36830 , CVE-2023-35805
