CVE-2023-5129 Overview
CVE-2023-5129 has been rejected and withdrawn by its CVE Numbering Authority. This CVE ID was identified as a duplicate of CVE-2023-4863, which addresses a heap buffer overflow vulnerability in the WebP image library (libwebp).
Critical Impact
This CVE has been rejected. Users should refer to CVE-2023-4863 for the actual vulnerability information and remediation guidance.
Affected Products
- See CVE-2023-4863 for affected products
Discovery Timeline
- September 25, 2023 - CVE-2023-5129 published to NVD
- November 7, 2023 - Last updated in NVD database (marked as rejected)
Technical Details for CVE-2023-5129
Vulnerability Analysis
CVE-2023-5129 was rejected by its CVE Numbering Authority because it is a duplicate entry for CVE-2023-4863. The underlying vulnerability that this CVE attempted to track is a heap buffer overflow in the libwebp library, specifically in the BuildHuffmanTable function used for WebP lossless compression.
Organizations and security teams should disregard this CVE ID and instead track CVE-2023-4863 for all vulnerability management, patching, and remediation activities related to this libwebp security issue.
Root Cause
This CVE was assigned in error as a duplicate. The actual vulnerability (CVE-2023-4863) involves improper restriction of operations within the bounds of a memory buffer in libwebp's Huffman coding implementation. When processing maliciously crafted WebP images, the vulnerable function can write data beyond allocated buffer boundaries.
Attack Vector
Since this CVE has been rejected, there is no specific attack vector associated with CVE-2023-5129. For technical details about the exploitation methodology, please refer to CVE-2023-4863, which documents the heap buffer overflow that can be triggered through specially crafted WebP image files.
Detection Methods for CVE-2023-5129
Indicators of Compromise
- This CVE has been rejected - no specific IOCs apply to CVE-2023-5129
- Organizations should monitor for IOCs associated with CVE-2023-4863 exploitation instead
- Review systems for malicious WebP files that may exploit the underlying libwebp vulnerability
Detection Strategies
- Update vulnerability scanners and SIEM rules to map CVE-2023-5129 references to CVE-2023-4863
- Ensure security tools properly correlate both CVE IDs when generating alerts or reports
- Review any historical alerts referencing CVE-2023-5129 and associate them with CVE-2023-4863
Monitoring Recommendations
- Track CVE-2023-4863 for ongoing threat intelligence and exploitation attempts
- Monitor vendor security advisories that may reference either CVE ID
- Ensure vulnerability management platforms correctly handle the rejected status of this CVE
How to Mitigate CVE-2023-5129
Immediate Actions Required
- Redirect all remediation efforts to CVE-2023-4863
- Update vulnerability tracking systems to reflect the rejected status of CVE-2023-5129
- Verify that patches applied for CVE-2023-4863 address the underlying libwebp vulnerability
Patch Information
No specific patches exist for CVE-2023-5129 as this CVE has been rejected. Organizations should apply patches and updates that address CVE-2023-4863, which covers the actual heap buffer overflow vulnerability in libwebp. Check with your software vendors for updated versions that include the libwebp security fix.
Workarounds
- Reference CVE-2023-4863 for applicable workarounds and mitigation strategies
- Update libwebp to version 1.3.2 or later (as specified in CVE-2023-4863 advisories)
- Update browsers and applications that bundle libwebp to versions containing the security fix
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
