CVE-2024-52791: matrix-media-repo — Fix

Description

Matrix Media Repo (MMR) is a highly configurable multi-homeserver media repository for Matrix. MMR makes requests to other servers as part of normal operation, and these resource owners can return large amounts of JSON back to MMR for parsing. In parsing, MMR can consume large amounts of memory and exhaust available memory. This is fixed in MMR v1.3.8. Users are advised to upgrade. For users unable to upgrade; forward proxies can be configured to block requests to unsafe hosts. Alternatively, MMR processes can be configured with memory limits and auto-restart. Running multiple MMR processes concurrently can help ensure a restart does not overly impact users.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-789 CWE-789

Affected Products

Vendor	Product	Versions
t2bot	matrix-media-repo	< 1.3.8

References

Advisories & Patches

https://github.com/t2bot/matrix-media-repo/security/advisories/GHSA-gp86-q8hg-fpxj

Other References

https://github.com/t2bot/matrix-media-repo/releases/tag/v1.3.8

Frequently Asked Questions

What is CVE-2024-52791? +

Matrix Media Repo (MMR) is a highly configurable multi-homeserver media repository for Matrix. MMR makes requests to other servers as part of normal operation, and these resource owners can return large amounts of JSON back to MMR for parsing. In parsing, MMR can consume large amounts of memory and exhaust available memory. This is fixed in MMR v1.3.8. Users are advised to upgrade. For users unable to upgrade; forward proxies can be configured to block requests to unsafe hosts. Alternatively, MMR processes can be configured with memory limits and auto-restart. Running multiple MMR processes concurrently can help ensure a restart does not overly impact users. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2024-52791? +

CVE-2024-52791 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-52791? +

CVE-2024-52791 affects products from t2bot, specifically: matrix-media-repo. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-52791? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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