CVE-2021-34813
Severity CVSS v4.0:
Pending analysis
Type:
CWE-787
Out-of-bounds Write
Publication date:
16/06/2021
Last modified:
23/06/2021
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.
Impact
Base Score 3.x
9.80
Severity 3.x
CRITICAL
Base Score 2.0
7.50
Severity 2.0
HIGH
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:* | 3.2.3 (excluding) |
To consult the complete list of CPE names with products and versions, see this page