CVE-2024-56515

6.8 · MEDIUM

Published Jan 16, 2025 t2bot CWE-502 EPSS 0.64% (48th pctl) CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N

Overview

CVE-2024-56515 is a medium-severity vulnerability affecting t2bot matrix-media-repo. It was published on January 16, 2025 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical Description

Matrix Media Repo (MMR) is a highly configurable multi-homeserver media repository for Matrix. If SVG or JPEGXL thumbnailers are enabled (they are disabled by default), a user may upload a file which claims to be either of these types and request a thumbnail to invoke a different decoder in ImageMagick. In some ImageMagick installations, this includes the capability to run Ghostscript to decode the image/file. If MP4 thumbnailers are enabled (also disabled by default), the same issue as above may occur with the ffmpeg installation instead. MMR uses a number of other decoders for all other file types when preparing thumbnails. Theoretical issues are possible with these decoders, however in testing they were not possible to exploit. This is fixed in MMR v1.3.8. MMR now inspects the mimetype of media prior to thumbnailing, and picks a thumbnailer based on those results instead of relying on user-supplied values. This may lead to fewer thumbnails when obscure file shapes are used. This als

Remediation

Check the references section for vendor advisories and patches from t2bot. Update matrix-media-repo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor	Product	Versions	Status
t2bot	matrix-media-repo	>= 0, < 1.3.8	Affected

References

GitHub github.com/t2bot/matrix-media-repo/releases/tag/v1.3.8 GitHub github.com/t2bot/matrix-media-repo/security/advisories/GHSA-rcxc-wjgw-579r

Frequently Asked Questions

What is CVE-2024-56515?

CVE-2024-56515 is a medium-severity vulnerability affecting t2bot matrix-media-repo. It was published on January 16, 2025 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2024-56515?

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-56515?

How can CyberStrike help with CVE-2024-56515?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-56515 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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