Home / mailings [gentoo-announce] [ GLSA 201607-12 ] Exim: Arbitrary code execution
Posted on 20 July 2016
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From: Aaron Bauman <bman@gentoo.org>
To: gentoo-announce@lists.gentoo.org
Message-ID: <7db2d16f-ee95-bdd9-2353-72f5ff78e157@gentoo.org>
Subject: [ GLSA 201607-12 ] Exim: Arbitrary code execution
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Gentoo Linux Security Advisory GLSA 201607-12
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https://security.gentoo.org/
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Severity: Normal
Title: Exim: Arbitrary code execution
Date: July 20, 2016
Bugs: #517934, #576582
ID: 201607-12
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Synopsis
========
A local attacker could execute arbitrary code by providing unsanitized
data to a data source or escalate privileges.
Background
==========
Exim is a message transfer agent (MTA) designed to be a a highly
configurable, drop-in replacement for sendmail.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 mail-mta/exim < 4.87 >= 4.87
Description
===========
Vulnerabilities have been discovered in Exim's implementation of
set-uid root and when using 'perl_startup'. These vulnerabilities
require a user account on the Exim server and a configuration that does
lookups against files to which the user has edit access.
Impact
======
A local attacker could possibly execute arbitrary code with the
privileges of the process, or escalate privileges.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Exim users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-mta/exim-4.87"
References
==========
[ 1 ] CVE-2014-2972
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-2972
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201607-12
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 2016 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.
http://creativecommons.org/licenses/by-sa/2.5
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<pre style="color: rgb(0, 0, 0); font-style: normal; font-variant: =normal; font-weight: normal; letter-spacing: normal; line-height: normal;= orphans: auto; text-align: start; text-indent: 0px; text-transform: none=; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap=: break-word; white-space: pre-wrap;">- - - - - - - - - - - - - - - - - -= - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 201607-12
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
<a class="moz-txt-link-freet=ext" href="https://security.gentoo.org/">https://security.gentoo.org/</=a>
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: Exim: Arbitrary code execution
Date: July 20, 2016
Bugs: #517934, #576582
ID: 201607-12
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
A local attacker could execute arbitrary code by providing unsanitized
data to a data source or escalate privileges.
Background
==========
Exim is a message transfer agent (MTA) designed to be a a highly
configurable, drop-in replacement for sendmail.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 mail-mta/exim < 4.87 >= =4.87
Description
===========
Vulnerabilities have been discovered in Exim's implementation of
set-uid root and when using 'perl_startup'. These vulnerabilities
require a user account on the Exim server and a configuration that does
lookups against files to which the user has edit access.
Impact
======
A local attacker could possibly execute arbitrary code with the
privileges of the process, or escalate privileges.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Exim users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-mta/exim-4.87"
References
==========
[ 1 ] CVE-2014-2972
<a class="moz-txt-link-freetext" href="http://nvd.nist.gov/nvd.=cfm?cvename=CVE-2014-2972">http://nvd.nist.gov/nvd.cfm?cvename=CVE-20=14-2972</a>
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
<a class="moz-txt-link-freetext" href="https://security.gentoo.org/g=lsa/201607-12">https://security.gentoo.org/glsa/201607-12</a>
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
<a class="moz-txt-link-abbreviated" href="mailto:security@gentoo.org"=>security@gentoo.org</a> or alternatively, you may file a bug at
<a class="moz-txt-link-freetext" href="https://bugs.gentoo.org">https=://bugs.gentoo.org</a>.
License
=======
Copyright 2016 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.
<a class="moz-txt-link-freetext" href="http://creativecommons.org/lic=enses/by-sa/2.5">http://creativecommons.org/licenses/by-sa/2.5</a></pre>
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