CVE-2024-36402 (GCVE-0-2024-36402)
Vulnerability from cvelistv5 – Published: 2025-01-16 19:19 – Updated: 2025-02-12 20:31
VLAI
EPSS
VEX
Title
Unauthenticated writes to the media repository allow planting of problematic content in Matrix Media Repo
Summary
Matrix Media Repo (MMR) is a highly configurable multi-homeserver media repository for Matrix. MMR before version 1.3.5 allows, by design, unauthenticated remote participants to trigger a download and caching of remote media from a remote homeserver to the local media repository. Such content then also becomes available for download from the local homeserver in an unauthenticated way. The implication is that unauthenticated remote adversaries can use this functionality to plant problematic content into the media repository. MMR 1.3.5 introduces a partial mitigation in the form of new endpoints which require authentication for media downloads. The unauthenticated endpoints will be frozen in a future release, closing the attack vector. Though extremely limited, server operators can use more strict rate limits based on IP address as a partial workaround.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-16 19:52 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/t2bot/matrix-media-repo/securi… | x_refsource_CONFIRM |
| https://github.com/matrix-org/matrix-spec-proposa… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| t2bot | matrix-media-repo |
Affected:
< 1.3.5
|
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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