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CVE-2022-39254

HIGH

8.6

Description

matrix-nio is a Python Matrix client library, designed according to sans I/O principles. Prior to version 0.20, when a users requests a room key from their devices, the software correctly remember the request. Once they receive a forwarded room key, they accept it without checking who the room key came from. This allows homeservers to try to insert room keys of questionable validity, potentially mounting an impersonation attack. Version 0.20 fixes the issue.

CVE Details

CVSS v3.1 Score8.6

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published9/29/2022

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

matrix-nio_project:matrix-nio

Weaknesses (CWE)

CWE-287CWE-322

References

https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0(security-advisories@github.com)

https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh(security-advisories@github.com)

https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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