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Ubuntu: USN-5194-1 (CVE-2021-34813): Olm vulnerability

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Ubuntu: USN-5194-1 (CVE-2021-34813): Olm vulnerability

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
06/16/2021
Created
03/29/2023
Added
03/22/2023
Modified
03/22/2023

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.

Solution(s)

  • ubuntu-upgrade-libolm3

References

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