[ GLSA 200410-26 ] socat: Format string vulnerability

From: Luke Macken (lewk_at_gentoo.org)
Date: 10/25/04

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    To: gentoo-announce@gentoo.org
Date: Mon, 25 Oct 2004 12:10:05 -0400

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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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    Relevant Pages

    • [ GLSA 200410-26 ] socat: Format string vulnerability
      ... the socat process. ... Remote exploitation is possible when socat is used as a HTTP proxy ... execution of arbitrary code with the privileges of the socat process is ... Security is a primary focus of Gentoo Linux and ensuring the ...
      (Full-Disclosure)
    • [Full-Disclosure] [ GLSA 200410-26 ] socat: Format string vulnerability
      ... the socat process. ... Remote exploitation is possible when socat is used as a HTTP proxy ... execution of arbitrary code with the privileges of the socat process is ... Security is a primary focus of Gentoo Linux and ensuring the ...
      (Full-Disclosure)
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