CVE-2024-52791CWE-789

Denial of service through memory exhaustion in Matrix Media Repo

Medium · published January 16, 2025

CVSS v3.1
5.3
EPSS
1%
Percentile
54.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00755 · 54.6th percentile
Weakness
CWE-789 · Memory Allocation with Excessive Size Value
Published
2025-01-16T19:12Z
EPSS history
Timeline
  • 16 JAN 19:12Z
    Denial of service through memory exhaustion in Matrix Media Repo
    cvelistv5