Medium severity · published Aug 20, 2024
CVE-2024-42369
A room with itself as a its predecessor will freeze matrix-js-sdk
5.3
CVSS
0.5%
EPSS
No
On KEV
Description
matrix-js-sdk is a Matrix messaging protocol Client-Server SDK for JavaScript. A malicious homeserver can craft a room or room structure such that the predecessors form a cycle. The matrix-js-sdk's getRoomUpgradeHistory function will infinitely recurse in this case, causing the code to hang. This method is public but also called by the 'leaveRoomChain()' method, so leaving a room will also trigger the bug. This was patched in matrix-js-sdk 34.3.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
matrix-js-sdk · matrix-org
< 34.3.1 · source: vendor
JS
Javascript Sdk · Matrix
before 34.3.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-42369
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-42369
Patch
https://github.com/matrix-org/matrix-js-sdk/commit/a0efed8b881b3db6c9f2c71d6a6e74c2828978c6
Vendor Advisory
https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-vhr5-g3pm-49fm
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