CVE-2024-52800: Detailed Vulnerability Analysis and Overview

CVE-2024-52800 Vulnerability Summary

veraPDF is an open source PDF/A validation library. Executing policy checks using custom schematron files via the CLI invokes an XSL transformation that may theoretically lead to a remote code execution (RCE) vulnerability. This doesn't affect the standard validation and policy checks functionality, veraPDF's common use cases. Most veraPDF users don't insert any custom XSLT code into policy profiles, which are based on Schematron syntax rather than direct XSL transforms. For users who do, only load custom policy files from sources you trust. This issue has not yet been patched. Users are advised to be cautious of XSLT code until a patch is available.

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CVE-2024-52800: Detailed Information and External References

EPSS

0.00043

EPSS %

0.10932

References

0.00043

• https://github.com/veraPDF/veraPDF-library/issues/1488
• https://github.com/veraPDF/veraPDF-library/security/advisories/GHSA-4cx5-89vm-833x

CWE

CWE-611

CAPEC

0.00043

• Data Serialization External Entities Blowup: This attack takes advantage of the entity replacement property of certain data serialization languages (e.g., XML, YAML, etc.) where the value of the replacement is a URI. A well-crafted file could have the entity refer to a URI that consumes a large amount of resources to create a denial of service condition. This can cause the system to either freeze, crash, or execute arbitrary code depending on the URI.