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Mutt could expose login details and leak memory
published 4 years ago
Summary
The Mutt email client version before 2.0.7 may send authentication over an unencrypted connection if it receives an unexpected reply from an IMAP server, and it can also waste system memory when handling certain address formats. Both issues can be resolved by updating to Mutt 2.0.7 or later. Apply the provided update to keep email communications secure and maintain system performance.
What to do
- Update almalinux mutt to version 5:2.0.7-1.el8.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| AlmaLinux:8 | almalinux | mutt |
< 5:2.0.7-1.el8 Fix: upgrade to 5:2.0.7-1.el8
|
Original advisory text
Moderate: mutt security, bug fix, and enhancement update
Mutt is a low resource, highly configurable, text-based MIME e-mail client. Mutt supports most e-mail storing formats, such as mbox and Maildir, as well as most protocols, including POP3 and IMAP.
The following packages have been upgraded to a later upstream version: mutt (2.0.7). (BZ#1912614)
Security Fix(es):
* mutt: Incorrect handling of invalid initial IMAP responses could lead to an authentication attempt over unencrypted connection (CVE-2020-28896)
* mutt: Memory leak when parsing rfc822 group addresses (CVE-2021-3181)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.
The following packages have been upgraded to a later upstream version: mutt (2.0.7). (BZ#1912614)
Security Fix(es):
* mutt: Incorrect handling of invalid initial IMAP responses could lead to an authentication attempt over unencrypted connection (CVE-2020-28896)
* mutt: Memory leak when parsing rfc822 group addresses (CVE-2021-3181)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.
References
- https://errata.almalinux.org/8/ALSA-2021-4181.html Vendor Advisory
- https://vulners.com/cve/CVE-2020-28896 Third Party Advisory
- https://vulners.com/cve/CVE-2021-3181 Third Party Advisory
Timeline
Published9 Nov 2021
Updated29 Oct 2026
First seen29 Oct 2026
Sources
ALSA-2021:4181 · OSV
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