Red Hat Enterprise Linux 8 update for thunderbird

1) Improper Verification of Cryptographic Signature

EUVDB-ID: #VU71716

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: CVE-2023-0430

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

Exploit availability: No

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

Red Hat Enterprise Linux for ARM 64: 8

Red Hat Enterprise Linux for Power, little endian: 8

Red Hat Enterprise Linux for IBM z Systems: 8

Red Hat Enterprise Linux for x86_64: 8.0

thunderbird (Red Hat package): before 102.7.1-2.el8_7

External links

http://access.redhat.com/errata/RHSA-2023:0606

Q & A

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.