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Gentoo 202201-34: Mutt and NeoMutt Expose Sensitive Data Risks

gentoo
Calendar Grey January 26, 2021
Dist Gentoo Esm H88
Mutt and NeoMutt identified a vulnerability in the TLS handshake process that could lead to potential information leaks. It's advised to upgrade.
A weakness was discovered in Mutt and NeoMutt's TLS handshake handling

Summary

A weakness in TLS handshake handling was found which may allow information disclosure.

Topics%20covered

Topics Covered

security advisory gentoo critical information disclosure mutt normal severity neomutt tls handshake mail-client

Resolution

All Mutt users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=mail-client/mutt-2.0.2"
All NeoMutt users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=mail-client/neomutt-20201120"

References

[ 1 ] CVE-2020-28896 https://nvd.nist.gov/vuln/detail/CVE-2020-28896

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202101-32
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: Normal
Title: Mutt, NeoMutt: Information disclosure
Date: January 26, 2021
Bugs: #755833, #755866
ID: 202101-32

Topics%20covered

Topics Covered

security advisory gentoo critical information disclosure mutt normal severity neomutt tls handshake mail-client

Synopsis

A weakness was discovered in Mutt and NeoMutt's TLS handshake handling

Background

Mutt is a small but very powerful text-based mail client. NeoMutt is a command line mail reader (or MUA). It’s a fork of Mutt with added features.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 mail-client/mutt < 2.0.2 >= 2.0.2 2 mail-client/neomutt < 20201120 >= 20201120 ------------------------------------------------------------------- 2 affected packages

Impact

===== A remote attacker may be able to cause information disclosure.

Workaround

There is no known workaround at this time.

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