#VU29424 Improper Certificate Validation in Mutt - CVE-2020-14154
Vulnerability identifier: #VU29424
Vulnerability risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-14154
CWE-ID:
CWE-295
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Mutt
Client/Desktop applications /
Office applications
Vendor: Mutt.org
Description
The vulnerability allows a remote attacker to perform a man-in-the-Middle (MitM) attack.
The vulnerability exists due to improper certificate validation in mutt. The application proceeds with the connection eve if in response to a GnuTLS certificate prompt the user rejects an expired intermediate certificate.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Mutt: 1.14 - 1.14.2
External links
https://lists.mutt.org/pipermail/mutt-announce/Week-of-Mon-20200608/000022.html
https://lists.opensuse.org/opensuse-security-announce/2020-06/msg00064.html
https://lists.opensuse.org/opensuse-security-announce/2020-06/msg00070.html
https://www.mutt.org
https://bugs.gentoo.org/728300
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.
