Vulnerabilities > CVE-2021-43529 - Out-of-bounds Write vulnerability in Mozilla Thunderbird

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
mozilla
CWE-787
critical

Summary

Thunderbird versions prior to 91.3.0 are vulnerable to the heap overflow described in CVE-2021-43527 when processing S/MIME messages. Thunderbird versions 91.3.0 and later will not call the vulnerable code when processing S/MIME messages that contain certificates with DER-encoded DSA or RSA-PSS signatures.

Vulnerable Configurations

Part Description Count
Application
Mozilla
444

Common Weakness Enumeration (CWE)