Unrated severityNVD Advisory· Published Jun 16, 2021· Updated Aug 4, 2024
CVE-2021-34813
CVE-2021-34813
Description
Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve an Olm encrypted room key backup from the homeserver) because olm_pk_decrypt has a stack-based buffer overflow. Remote code execution might be possible for some nonstandard build configurations.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Matrix/libolmdescription
- Range: <3.2.3
Patches
Vulnerability mechanics
References
3- gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901bmitrex_refsource_MISC
- gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3mitrex_refsource_MISC
- matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolmmitrex_refsource_MISC
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