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Gentoo Linux Security Advisory                           GLSA 202003-64
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: libxls: Multiple vulnerabilities
     Date: March 30, 2020
     Bugs: #638336, #674006
       ID: 202003-64

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Synopsis
=======
Multiple vulnerabilities have been found in libxls, the worst of which
could result in the arbitrary execution of code.

Background
=========
libxls is a C library for reading Excel files in the nasty old binary
OLE format, plus a command-line tool for converting XLS to CSV.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-libs/libxls              < 1.5.2                    >= 1.5.2

Description
==========
Multiple vulnerabilities have been discovered in libxls. Please review
the CVE identifiers referenced below for details.

Impact
=====
A remote attacker could entice a user to process a specially crafted
Excel file using libxls, possibly resulting in execution of arbitrary
code with the privileges of the process or a Denial of Service
condition.

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

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

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-libs/libxls-1.5.2"

References
=========
[ 1 ] CVE-2017-12110
      https://nvd.nist.gov/vuln/detail/CVE-2017-12110
[ 2 ] CVE-2017-12111
      https://nvd.nist.gov/vuln/detail/CVE-2017-12111
[ 3 ] CVE-2017-2896
      https://nvd.nist.gov/vuln/detail/CVE-2017-2896
[ 4 ] CVE-2017-2897
      https://nvd.nist.gov/vuln/detail/CVE-2017-2897
[ 5 ] CVE-2017-2919
      https://nvd.nist.gov/vuln/detail/CVE-2017-2919
[ 6 ] CVE-2018-20450
      https://nvd.nist.gov/vuln/detail/CVE-2018-20450
[ 7 ] CVE-2018-20452
      https://nvd.nist.gov/vuln/detail/CVE-2018-20452

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

 https://security.gentoo.org/glsa/202003-64

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/