Vulnerability identifier: #VU71716
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-347
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Mozilla Thunderbird
Client/Desktop applications /
Messaging software
Vendor: 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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Mozilla Thunderbird: 102.0 - 102.7.0, 91.0 - 91.13.1, 78.0 - 78.15.0, 68.0 - 68.12.1
External links
http://www.mozilla.org/en-US/security/advisories/mfsa2023-04/
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.