ID CVE-2021-34813
Summary 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.
References
Vulnerable Configurations
  • cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:*
    cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:*
CVSS
Base: 7.5 (as of 23-06-2021 - 14:29)
Impact:
Exploitability:
CWE CWE-787
CAPEC
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL PARTIAL PARTIAL
cvss-vector via4 AV:N/AC:L/Au:N/C:P/I:P/A:P
Last major update 23-06-2021 - 14:29
Published 16-06-2021 - 18:15
Last modified 23-06-2021 - 14:29
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