veraPDF-library up to 1.26.1 XSL Transform xml external entity reference

Summaryinfo

A vulnerability identified as problematic has been detected in veraPDF-library up to 1.26.1. The affected element is an unknown function of the component XSL Transform Handler. This manipulation causes xml external entity reference. This vulnerability is registered as CVE-2024-52800. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in veraPDF-library up to 1.26.1. Affected by this vulnerability is some unknown functionality of the component XSL Transform Handler. The manipulation with an unknown input leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2024-52800 since 11/15/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Software Library

Name

• veraPDF-library

Version

• 1.26.0
• 1.26.1

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

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• 🔍

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