A libetpan security update has been released for Gentoo Linux.

gentoo-announce: GLSA 202007-55 : libetpan: Improper STARTTLS handling

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Gentoo Linux Security Advisory GLSA 202007-55
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  https://security.gentoo.org/
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Severity: Normal
Title: libetpan: Improper STARTTLS handling
Date: July 28, 2020
Bugs: #734130
ID: 202007-55

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Synopsis
=======
A vulnerability was discovered in libetpan's STARTTLS handling,
possibly allowing an integrity/confidentiality compromise.

Background
=========
libetpan is a portable, efficient middleware for different kinds of
mail access.

Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/libetpan < 1.9.4-r1 >= 1.9.4-r1

Description
==========
It was discovered that libetpan was not properly handling state within
the STARTTLS protocol handshake.

Impact
=====
There may be a breach of integrity or confidentiality in connections
made using libetpan with STARTTLS.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All libetpan users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/libetpan-1.9.4-r1"

References
=========
[ 1 ] CVE-2020-15953
  https://nvd.nist.gov/vuln/detail/CVE-2020-15953

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/202007-55

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.

License
======
Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

  https://creativecommons.org/licenses/by-sa/2.5