Out-of-bounds read in Mutt - CVE-2021-32055
Published: May 27, 2021
Vulnerability identifier: #VU53619
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-32055
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in imap/util.c in Mutt when processing IMAP sequence, which ends with a comma. A remote attacker can trigger an out-of-bounds read error and read contents of memory on the system.
Affected software
Mutt
Gentoo Linux
Ubuntu
mutt-patched (Ubuntu package)
mutt (Ubuntu package)
Gentoo Linux
Ubuntu
mutt-patched (Ubuntu package)
mutt (Ubuntu package)
How to mitigate CVE-2021-32055
Install updates from vendor's website.
Mutt - update to 2.0.7
mutt-patched (Ubuntu package) - update to 1.5.24-1ubuntu0.6
mutt (Ubuntu package) - addressed in versions 1.9.4-3ubuntu0.6, 1.13.2-1ubuntu0.5, 2.0.5-4.1ubuntu0.1, 2.1.4-1ubuntu1.1
mutt-patched (Ubuntu package) - update to 1.5.24-1ubuntu0.6
mutt (Ubuntu package) - addressed in versions 1.9.4-3ubuntu0.6, 1.13.2-1ubuntu0.5, 2.0.5-4.1ubuntu0.1, 2.1.4-1ubuntu1.1