#VU71716 Improper Verification of Cryptographic Signature in Mozilla Thunderbird - CVE-2023-0430
Published: February 1, 2023
Vulnerability identifier: #VU71716
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-0430
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Mozilla Thunderbird
Mozilla Thunderbird
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to application does not check certificate OCSP revocation status when verifying S/Mime signatures. A remote attacker can sign their emails with a revoked certificate and they will be displayed as having a valid signature.
Remediation
Install updates from vendor's website.