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Category:   Application (E-mail Server)  >   Sylpheed Vendors:   Yamamoto, Hiroyuki
(Gentoo Issues Fix) Sylpheed Buffer Overflow in Processing Message Headers May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1013490
SecurityTracker URL:  http://securitytracker.com/id/1013490
CVE Reference:   CVE-2005-0667   (Links to External Site)
Date:  Mar 21 2005
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 1.0.3
Description:   A vulnerability was reported in Sylpheed. A remote user may be able to execute arbitrary code on the target system in certain cases.

A remote user can send a message with specially crafted headers to the target user. Then, when the target user replies to the affected message, a buffer overflow may occur. It may be possible to execute arbitrary code, however, the report did not confirm this.

Certain headers containing non-ASCII characters can trigger the overflow.

Impact:   A remote user may be able to execute arbitrary code on the target user's system.

[Editor's note: The report did not confirm code execution.]

Solution:   Gentoo has issued a fix and indicates that all Sylpheed users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/sylpheed-1.0.3"

All Sylpheed-claws users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/sylpheed-claws-1.0.3"

Vendor URL:  sylpheed.good-day.net/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Gentoo)

Message History:   This archive entry is a follow-up to the message listed below.
Mar 4 2005 Sylpheed Buffer Overflow in Processing Message Headers May Let Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [Full-disclosure] [ GLSA 200503-26 ] Sylpheed,



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Gentoo Linux Security Advisory                           GLSA 200503-26
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Sylpheed, Sylpheed-claws: Message reply overflow
      Date: March 20, 2005
      Bugs: #84056
        ID: 200503-26

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Synopsis
========

Sylpheed and Sylpheed-claws contain a vulnerability that can be
triggered when replying to specially crafted messages.

Background
==========

Sylpheed is a lightweight email client and newsreader. Sylpheed-claws
is a 'bleeding edge' version of Sylpheed.

Affected packages
=================

    -------------------------------------------------------------------
     Package                     /  Vulnerable  /           Unaffected
    -------------------------------------------------------------------
  1  mail-client/sylpheed             < 1.0.3                 >= 1.0.3
  2  mail-client/sylpheed-claws       < 1.0.3                 >= 1.0.3
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

Description
===========

Sylpheed and Sylpheed-claws fail to properly handle non-ASCII
characters in email headers when composing reply messages.

Impact
======

An attacker can send an email containing a malicious non-ASCII header
which, when replied to, would cause the program to crash, potentially
allowing the execution of arbitrary code with the privileges of the
user running the software.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Sylpheed users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=mail-client/sylpheed-1.0.3"

All Sylpheed-claws users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=mail-client/sylpheed-claws-1.0.3"

References
==========

  [ 1 ] Sylpheed ChangeLog
        http://sylpheed.good-day.net/#changes
  [ 2 ] CAN-2005-0667
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0667

Availability
============

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

  http://security.gentoo.org/glsa/glsa-200503-26.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 2005 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/2.0

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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
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