Gentoo GLSA-201612-44 Normal: Roundcube Arbitrary Code Execution Risk
gentoo
December 24, 2016
A vulnerability in Roundcube could potentially lead to arbitrary code execution.
Summary
Roundcube, when no SMTP server is configured and the sendmail program is enabled, does not properly restrict the use of custom envelope-from addresses on the sendmail command line.
Topics Covered
Resolution
All Roundcube users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/roundcube-1.2.3"
References
[ 1 ] CVE-2016-9920 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-9920
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201612-44
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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.
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Severity: Normal
Title: Roundcube: Arbitrary code execution
Date: December 24, 2016
Bugs: #601410
ID: 201612-44
Topics Covered
Background
Free and open source webmail software for the masses, written in PHP.
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Affected Packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 mail-client/roundcube < 1.2.3 >= 1.2.3
Impact
=====
An authenticated remote attacker could possibly execute arbitrary code
with the privileges of the process, or cause a Denial of Service
condition.
Workaround
Don't use a MTA (Mail Transfer Agent) in conjunction with Roundcube which implements sendmail's "-O" or "-X" parameter, or configure Roundcube to use a SMTP server as recommended by upstream.
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