Vulnerability Details CVE-2022-39254
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 23.0%
CVSS Severity
CVSS v3 Score 8.6
References
- https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0
- https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh
- https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0
- https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh
Products affected by CVE-2022-39254
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.1
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.10.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.11.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.11.1
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.11.2
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.12.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.13.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.14.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.14.1
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.15.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.15.1
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.15.2
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.16.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.17.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.18.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.18.1
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.18.2
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.18.3
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.18.4
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.18.5
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.18.6
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.18.7
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.19.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.2
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.3
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.4
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.4.1
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.5
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.6
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.7
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.7.1
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.7.2
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.8.0
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cpe:2.3:a:matrix-nio_project:matrix-nio:0.9.0