VDB
CVE-2021-34813
CVE-2021-34813
PUBLISHED
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.
EPSS 4.46% · 89.3th percentile
Risk Scores
EPSS Score
4.46%
89.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:20.04:LTS | olm | 0, 3.1.3+dfsg-2, 3.1.3+dfsg-2build1 |
Exploit Intelligence
Timeline
- Jun 16, 2021 CVE Published
- Jun 17, 2021 EPSS Score
- Aug 18, 2021 EPSS Score
- Dec 17, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 15, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Apr 17, 2022 EPSS Score
- Aug 17, 2022 EPSS Score
- Oct 16, 2022 EPSS Score
- Dec 16, 2022 EPSS Score
- Mar 7, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-34813 third-party-advisory
- https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b third-party-advisory
- https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3 third-party-advisory
- https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm third-party-advisory
- https://ubuntu.com/security/notices/USN-5194-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-34813 third-party-advisory