ALT-PU-2021-2798-1
Closed vulnerabilities
Published: 2021-06-17
BDU:2021-04871
Уязвимость реализации криптографической трещотки Double Ratchet Libolm, связанная с записью за границами буфера, позволяющая нарушителю получить доступ к конфиденциальным данным, нарушить их целостность, а также вызвать отказ в обслуживании
Severity: CRITICAL (9.8)
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References:
Published: 2021-06-16
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2021-34813
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.
Severity: CRITICAL (9.8)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References:
- https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b
- https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b
- https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3
- https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3
- https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm
- https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm