March 2006
Four Gentoo Linux Security Advisories: 1. GLSA 200603-13 2. GLSA 200603-14 3. GLSA 200603-15 4. GLSA 200603-16
ID: 00218
Ref: 218
Date: 20 March 2006:13:29:32
Version: 1
Title: Four Gentoo Linux Security Advisories: 1. GLSA 200603-13 2. GLSA 200603-14 3. GLSA 200603-15 4. GLSA 200603-16
Abstract: Vulnerabilities discovered in PEAR-Auth, Heimdal, Crypt::CBC, and Metamail. Users should update to the latest versions.
Vendors affected: Gentoo
Operating systems affected: Gentoo
Applications affected: Gentoo
1.
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Gentoo Linux Security Advisory GLSA 200603-13
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http://security.gentoo.org/
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Severity: Normal
Title: PEAR-Auth: Potential authentication bypass
Date: March 17, 2006
Bugs: #123832
ID: 200603-13
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Synopsis
========
PEAR-Auth did not correctly verify data passed to the DB and LDAP
containers, thus allowing to inject false credentials to bypass the
authentication.
Background
==========
PEAR-Auth is a PEAR package that provides methods to create a PHP based
authentication system.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-php/PEAR-Auth < 1.2.4 >= 1.2.4
Description
===========
Matt Van Gundy discovered that PEAR-Auth did not correctly validate
data passed to the DB and LDAP containers.
Impact
======
A remote attacker could possibly exploit this vulnerability to bypass
the authentication mechanism by injecting specially crafted input to
the underlying storage containers.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All PEAR-Auth users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-php/PEAR-Auth-1.2.4"
References
==========
[ 1 ] CVE-2006-0868
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0868
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200603-13.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 200603-14
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http://security.gentoo.org/
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Severity: Normal
Title: Heimdal: rshd privilege escalation
Date: March 17, 2006
Bugs: #121839
ID: 200603-14
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Synopsis
========
An error in the rshd daemon of Heimdal could allow authenticated users
to elevate privileges.
Background
==========
Heimdal is a free implementation of Kerberos 5.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-crypt/heimdal < 0.7.2 >= 0.7.2
Description
===========
An unspecified privilege escalation vulnerability in the rshd server of
Heimdal has been reported.
Impact
======
Authenticated users could exploit the vulnerability to escalate
privileges or to change the ownership and content of arbitrary files.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Heimdal users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/heimdal-0.7.2"
References
==========
[ 1 ] CAN-2006-0582
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2006-0582
[ 2 ] Heimdal Advisory 2006-02-06
http://www.pdc.kth.se/heimdal/advisory/2006-02-06/
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200603-14.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
3.
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Gentoo Linux Security Advisory GLSA 200603-15
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http://security.gentoo.org/
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Severity: Low
Title: Crypt::CBC: Insecure initialization vector
Date: March 17, 2006
Bugs: #126048
ID: 200603-15
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Synopsis
========
Crypt::CBC uses an insecure initialization vector, potentially
resulting in a weaker encryption.
Background
==========
Crypt::CBC is a Perl module to encrypt data using cipher block chaining
(CBC).
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-perl/crypt-cbc < 2.17 >= 2.17
Description
===========
Lincoln Stein discovered that Crypt::CBC fails to handle 16 bytes long
initializiation vectors correctly when running in the RandomIV mode,
resulting in a weaker encryption because the second part of every block
will always be encrypted with zeros if the blocksize of the cipher is
greater than 8 bytes.
Impact
======
An attacker could exploit weak ciphertext produced by Crypt::CBC to
bypass certain security restrictions or to gain access to sensitive
data.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Crypt::CBC users should upgrade to the latest available version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-perl/crypt-cbc-2.17"
References
==========
[ 1 ] CVE-2006-0898
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0898
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200603-15.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
4.
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Gentoo Linux Security Advisory GLSA 200603-16
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http://security.gentoo.org/
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Severity: High
Title: Metamail: Buffer overflow
Date: March 17, 2006
Bugs: #126052
ID: 200603-16
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Synopsis
========
A buffer overflow in Metamail could possibly be exploited to execute
arbitrary code.
Background
==========
Metamail is a program that decodes MIME encoded mail.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-mail/metamail < 2.7.45.3-r1 >= 2.7.45.3-r1
Description
===========
Ulf Harnhammar discovered a buffer overflow in Metamail when processing
mime boundraries.
Impact
======
By sending a specially crafted email, attackers could potentially
exploit this vulnerability to crash Metamail or to execute arbitrary
code.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Metamail users should update to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/metamail-2.7.45.3-r1"
References
==========
[ 1 ] CVE-2006-0709
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0709
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200603-16.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