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CVE-2021-34813

Published: Jun 16, 2021

Modified: Aug 4, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm

x_refsource_MISC

https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3

x_refsource_MISC

https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b

x_refsource_MISC

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