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Gentoo Linux Security Advisory GLSA 200410-26
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http://security.gentoo.org/
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Severity: Normal
Title: socat: Format string vulnerability
Date: October 25, 2004
Bugs: #68547
ID: 200410-26
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Synopsis
========
socat contains a format string vulnerability that can potentially lead
to remote or local execution of arbitrary code with the privileges of
the socat process.
Background
==========
socat is a multipurpose bidirectional relay, similar to netcat.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/socat < 1.4.0.3 >= 1.4.0.3
Description
===========
socat contains a syslog() based format string vulnerablility in the
'_msg()' function of 'error.c'. Exploitation of this bug is only
possible when socat is run with the '-ly' option, causing it to log
messages to syslog.
Impact
======
Remote exploitation is possible when socat is used as a HTTP proxy
client and connects to a malicious server. Local privilege escalation
can be achieved when socat listens on a UNIX domain socket. Potential
execution of arbitrary code with the privileges of the socat process is
possible with both local and remote exploitations.
Workaround
==========
Disable logging to syslog by not using the '-ly' option when starting
socat.
Resolution
==========
All socat users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/socat-1.4.0.3"
References
==========
[ 1 ] socat Security Advisory
http://www.dest-unreach.org/socat/advisory/socat-adv-1.html
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200410-26.xml
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
http://bugs.gentoo.org.
License
=======
Copyright 2004 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/1.0
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