December 2005
Two Gentoo Security Advisories: 1. GLSA 200512-05 - Xmail: Privilege escalation through sendmail 2. GLSA 100512-06 - Ethereal: Buffer overflow in OSPF protocol dissector
ID: 01099
Ref: 1031/2005
Date: 15 December 2005:12:00:27
Version: 1
Title: Two Gentoo Security Advisories: 1. GLSA 200512-05 - Xmail: Privilege escalation through sendmail 2. GLSA 100512-06 - Ethereal: Buffer overflow in OSPF protocol dissector
Abstract:
Vendors affected: Gentoo
Operating systems affected: Gentoo
Applications affected: Gentoo
Title
=====
Two Gentoo Security Advisories:
1. GLSA 200512-05 - Xmail: Privilege escalation through sendmail
2. GLSA 100512-06 - Ethereal: Buffer overflow in OSPF protocol dissector
Detail
======
1. iDEFENSE reported that the AddressFromAtPtr function in the sendmail
program fails to check bounds on arguments passed from other functions,
and as a result an exploitable stack overflow condition occurs when
specifying the "-t" command line option.
2. iDEFENSE reported a possible overflow due to the lack of bounds
checking in the dissect_ospf_v3_address_prefix() function, part of the
OSPF protocol dissector.
1.
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Gentoo Linux Security Advisory GLSA 200512-05
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http://security.gentoo.org/
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Severity: High
Title: Xmail: Privilege escalation through sendmail
Date: December 14, 2005
Bugs: #109381
ID: 200512-05
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Synopsis
========
The sendmail program in Xmail is vulnerable to a buffer overflow,
potentially resulting in local privilege escalation.
Background
==========
Xmail is an Internet and intranet mail server.
Affected packages
=================
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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 mail-mta/xmail < 1.22 >= 1.22
Description
===========
iDEFENSE reported that the AddressFromAtPtr function in the sendmail
program fails to check bounds on arguments passed from other functions,
and as a result an exploitable stack overflow condition occurs when
specifying the "-t" command line option.
Impact
======
A local attacker can make a malicious call to sendmail, potentially
resulting in code execution with elevated privileges.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Xmail users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-mta/xmail-1.22"
References
==========
[ 1 ] CVE-2005-2943
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2943
[ 2 ] iDEFENSE Security Advisory
http://www.idefense.com/application/poi/display?id=321&type=vulnerabilities&flashstatus=true
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200512-05.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
2.
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Gentoo Linux Security Advisory GLSA 200512-06
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http://security.gentoo.org/
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Severity: High
Title: Ethereal: Buffer overflow in OSPF protocol dissector
Date: December 14, 2005
Bugs: #115030
ID: 200512-06
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Synopsis
========
Ethereal is missing bounds checking in the OSPF protocol dissector that
could lead to abnormal program termination or the execution of
arbitrary code.
Background
==========
Ethereal is a feature-rich network protocol analyzer. It provides
protocol analyzers for various network flows, including one for Open
Shortest Path First (OSPF) Interior Gateway Protocol.
Affected packages
=================
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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-analyzer/ethereal < 0.10.13-r2 >= 0.10.13-r2
Description
===========
iDEFENSE reported a possible overflow due to the lack of bounds
checking in the dissect_ospf_v3_address_prefix() function, part of the
OSPF protocol dissector.
Impact
======
An attacker might be able to craft a malicious network flow that would
crash Ethereal. It may be possible, though unlikely, to exploit this
flaw to execute arbitrary code with the permissions of the user running
Ethereal, which could be the root user.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Ethereal users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/ethereal-0.10.13-r2"
References
==========
[ 1 ] CVE-2005-3651
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3651
[ 2 ] iDEFENSE Advisory
http://www.idefense.com/application/poi/display?id=349&type=vulnerabilities
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200512-06.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