CVE-2024-23807: apache software foundation apache xerces c++ Use After Free

Vulnerability summary

CVE-2024-23807 is a critical (CVSS 9.8) Use After Free vulnerability in apache software foundation apache xerces c++. EPSS estimates a 1.48% chance of exploitation in the next 30 days, higher than 73.5% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 28-02-2024
   PublishedVulnerability first disclosed.
2. 22-01-2026
   Last modifiedVulnerability information updated.

Description

The Apache Xerces C++ XML parser on versions 3.0.0 before 3.2.5 contains a use-after-free error triggered during the scanning of external DTDs. Users are recommended to upgrade to version 3.2.5 which fixes the issue, or mitigate the issue by disabling DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable. This issue has been disclosed before as CVE-2018-1311, but unfortunately that advisory incorrectly stated the issue would be fixed in version 3.2.3 or 3.2.4.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.