February 2006
Two Gentoo Linux Security Advisories: 1. GLSA 200602-08 - libtasn1, GNU TLS: Security flaw in DER decoding 2. GLSA 200602-09 - BomberClone: Remote execution of arbitrary code
ID: 00141
Ref: 139/2006
Date: 17 February 2006:11:10:43
Version: 1
Title: Two Gentoo Linux Security Advisories: 1. GLSA 200602-08 - libtasn1, GNU TLS: Security flaw in DER decoding 2. GLSA 200602-09 - BomberClone: Remote execution of arbitrary code
Abstract: 1. Evgeny Legerov has reported a flaw in the DER decoding routines provided by libtasn1, which could cause an out of bounds access to occur. 2. Stefan Cornelius of the Gentoo Security team discovered multiple missing buffer checks in BomberClone's code.
Vendors affected: Gentoo
Operating systems affected: Gentoo
Applications affected: Gentoo
Title
=====
Two Gentoo Linux Security Advisories:
1. GLSA 200602-08 - libtasn1, GNU TLS: Security flaw in DER decoding
2. GLSA 200602-09 - BomberClone: Remote execution of arbitrary code
Detail
======
1. Evgeny Legerov has reported a flaw in the DER decoding routines
provided by libtasn1, which could cause an out of bounds access to
occur.
2. Stefan Cornelius of the Gentoo Security team discovered multiple
missing buffer checks in BomberClone's code.
1.
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Gentoo Linux Security Advisory GLSA 200602-08
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http://security.gentoo.org/
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Severity: High
Title: libtasn1, GNU TLS: Security flaw in DER decoding
Date: February 16, 2006
Bugs: #122307
ID: 200602-08
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Synopsis
========
A flaw in the parsing of Distinguished Encoding Rules (DER) has been
discovered in libtasn1, potentially resulting in the execution of
arbitrary code.
Background
==========
Libtasn1 is a library used to parse ASN.1 (Abstract Syntax Notation
One) objects, and perform DER (Distinguished Encoding Rules) decoding.
Libtasn1 is included with the GNU TLS library, which is used by
applications to provide a cryptographically secure communications
channel.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/libtasn1 < 0.2.18 >= 0.2.18
2 net-libs/gnutls < 1.2.10 >= 1.2.10
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------
Description
===========
Evgeny Legerov has reported a flaw in the DER decoding routines
provided by libtasn1, which could cause an out of bounds access to
occur.
Impact
======
A remote attacker could cause an application using libtasn1 to crash
and potentially execute arbitrary code by sending specially crafted
input.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All libtasn1 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libtasn1-0.2.18"
All GNU TLS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/gnutls-1.2.10"
References
==========
[ 1 ] CVE-2006-0645
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0645
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200602-08.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 2006 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 200602-09
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http://security.gentoo.org/
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Severity: High
Title: BomberClone: Remote execution of arbitrary code
Date: February 16, 2006
Bugs: #121605
ID: 200602-09
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Synopsis
========
BomberClone is vulnerable to a buffer overflow which may lead to remote
execution of arbitrary code.
Background
==========
BomberClone is a remake of the classic game "BomberMan". It supports
multiple players via IP network connection.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 games-action/bomberclone < 0.11.6.2-r1 >= 0.11.6.2-r1
Description
===========
Stefan Cornelius of the Gentoo Security team discovered multiple
missing buffer checks in BomberClone's code.
Impact
======
By sending overly long error messages to the game via network, a remote
attacker may exploit buffer overflows to execute arbitrary code with
the rights of the user running BomberClone.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All BomberClone users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose
">=games-action/bomberclone-0.11.6.2-r1"
References
==========
[ 1 ] CVE-2006-0460
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0460
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200602-09.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 2006 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