#VU48662 Cleartext transmission of sensitive information in Mutt - CVE-2020-28896
Published: November 23, 2020 / Updated: November 26, 2020
Vulnerability identifier: #VU48662
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-28896
CWE-ID: CWE-319
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Mutt
Mutt
Software vendor:
Mutt.org
Mutt.org
Description
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to software does not ensure that $ssl_force_tls is processed if an IMAP server's initial
server response is invalid. As a result, the connection is not properly closed, and
the application continues authentication attempts. A remote attacker with ability to intercept traffic can perform a MitM attack and gain access to victim's credentials.
Remediation
Install updates from vendor's website.
External links
- https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec8112b4b06
- https://github.com/neomutt/neomutt/releases/tag/20201120
- https://gitlab.com/muttmua/mutt/-/commit/04b06aaa3e0cc0022b9b01dbca2863756ebbf59a
- https://gitlab.com/muttmua/mutt/-/commit/d92689088dfe80a290ec836e292376e2d9984f8f