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UNIRAS Brief - 460/05 - Four Gentoo Linux Security Advisories:



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 460/05 dated 20.06.05  Time: 14:30  
  UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====

Four Gentoo Linux Security Advisories:
1. GLSA 200506-13 - webapp-config
2. GLSA 200506-14 - Sun and Blackdown Java
3. GLSA 200506-15 - PeerCast
4. GLSA 200506-16 - cpio

Detail
====== 

1. Eric Romang discovered webapp-config uses a predictable temporary
filename while processing certain options, resulting in a race
condition.

2. Both Sun's and Blackdown's JDK and JRE may allow untrusted applets to
elevate privileges.

3. James Bercegay of the GulfTech Security Research Team discovered that
PeerCast insecurely implements formatted printing when receiving a
request with a malformed URL.

4. A vulnerability has been found in cpio that can potentially allow a
cpio archive to extract its files to an arbitrary directory of the
creator's choice.


1.


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Gentoo Linux Security Advisory                           GLSA 200506-13
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: webapp-config: Insecure temporary file handling
      Date: June 17, 2005
      Bugs: #91785, #88831
        ID: 200506-13

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Synopsis
========

The webapp-config utility insecurely creates temporary files in a world
writable directory, potentially allowing the execution of arbitrary
commands.

Background
==========

webapp-config is a Gentoo Linux utility to help manage the installation
of web-based applications.

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

    -------------------------------------------------------------------
     Package                /  Vulnerable  /                Unaffected
    -------------------------------------------------------------------
  1  net-www/webapp-config       < 1.11                        >= 1.11

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

Eric Romang discovered webapp-config uses a predictable temporary
filename while processing certain options, resulting in a race
condition.

Impact
======

Successful exploitation of the race condition would allow an attacker
to disrupt the operation of webapp-config, or execute arbitrary shell
commands with the privileges of the user running webapp-config. A local
attacker could use a symlink attack to create or overwrite files with
the permissions of the user running webapp-config.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All webapp-config users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-www/webapp-config-1.11"

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

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

  http://security.gentoo.org/glsa/glsa-200506-13.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@xxxxxxxxxx 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 200506-14
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Sun and Blackdown Java: Applet privilege escalation
      Date: June 19, 2005
      Bugs: #96092, #96229
        ID: 200506-14

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Synopsis
========

Sun's and Blackdown's JDK or JRE may allow untrusted applets to elevate
their privileges.

Background
==========

Sun and Blackdown both provide implementations of the Java Development
Kit (JDK) and Java Runtime Environment (JRE).

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

    -------------------------------------------------------------------
     Package                 /  Vulnerable  /               Unaffected
    -------------------------------------------------------------------
  1  dev-java/sun-jdk           < 1.4.2.08                 >= 1.4.2.08
  2  dev-java/sun-jre-bin       < 1.4.2.08                 >= 1.4.2.08
  3  dev-java/blackdown-jdk     < 1.4.2.02                 >= 1.4.2.02
  4  dev-java/blackdown-jre     < 1.4.2.02                 >= 1.4.2.02
    -------------------------------------------------------------------
     4 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

Both Sun's and Blackdown's JDK and JRE may allow untrusted applets to
elevate privileges.

Impact
======

A remote attacker could embed a malicious Java applet in a web page and
entice a victim to view it. This applet can then bypass security
restrictions and execute any command or access any file with the rights
of the user running the web browser.

Workaround
==========

There are no known workarounds at this time.

Resolution
==========

All Sun JDK users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-java/sun-jdk-1.4.2.08"

All Sun JRE users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-java/sun-jre-bin-1.4.2.08"

All Blackdown JDK users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-java/blackdown-jdk-1.4.2.02"

All Blackdown JRE users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-java/blackdown-jre-1.4.2.02"

Note to SPARC users: There is no stable secure Blackdown Java for the
SPARC architecture. Affected users should remove the package until a
SPARC package is released.

References
==========

  [ 1 ] Sun Security Alert ID 101749
        http://sunsolve.sun.com/search/document.do?assetkey=1-26-101749-1
  [ 2 ] Blackdown Java Security Advisory
        http://www.blackdown.org/java-linux/java2-status/security/Blackdown-SA-2005-02.txt

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

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

  http://security.gentoo.org/glsa/glsa-200506-14.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@xxxxxxxxxx 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



3.

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Gentoo Linux Security Advisory                           GLSA 200506-15
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                                            http://security.gentoo.org/
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  Severity: High
     Title: PeerCast: Format string vulnerability
      Date: June 19, 2005
      Bugs: #96199
        ID: 200506-15

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Synopsis
========

PeerCast suffers from a format string vulnerability that could allow
arbitrary code execution.

Background
==========

PeerCast is a media streaming system based on P2P technology.

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

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  media-sound/peercast      < 0.1212                      >= 0.1212

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

James Bercegay of the GulfTech Security Research Team discovered that
PeerCast insecurely implements formatted printing when receiving a
request with a malformed URL.

Impact
======

A remote attacker could exploit this vulnerability by sending a request
with a specially crafted URL to a PeerCast server to execute arbitrary
code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All PeerCast users should upgrade to the latest available version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-sound/peercast-0.1212"

References
==========

  [ 1 ] GulfTech Advisory
        http://www.gulftech.org/?node=research&article_id=00077-05282005
  [ 2 ] PeerCast Announcement
        http://www.peercast.org/forum/viewtopic.php?p=11596

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

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

  http://security.gentoo.org/glsa/glsa-200506-15.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@xxxxxxxxxx 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



4.

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Gentoo Linux Security Advisory                           GLSA 200506-16
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: cpio: Directory traversal vulnerability
      Date: June 20, 2005
      Bugs: #90619
        ID: 200506-16

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Synopsis
========

cpio contains a flaw which may allow a specially crafted cpio archive
to extract files to an arbitrary directory.

Background
==========

cpio is a file archival tool which can also read and write tar files.

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

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  app-arch/cpio      < 2.6-r3                             >= 2.6-r3

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

A vulnerability has been found in cpio that can potentially allow a
cpio archive to extract its files to an arbitrary directory of the
creator's choice.

Impact
======

An attacker could create a malicious cpio archive which would create
files in arbitrary locations on the victim's system. This issue could
also be used in conjunction with a previous race condition
vulnerability (CAN-2005-1111) to change permissions on files owned by
the victim.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All cpio users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-arch/cpio-2.6-r3"

References
==========

  [ 1 ] Original Advisory
        http://www.securityfocus.com/archive/1/396429
  [ 2 ] CAN-2005-1111
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1111

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

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

  http://security.gentoo.org/glsa/glsa-200506-16.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@xxxxxxxxxx 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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Tel: +44 (0) 870 487 0748 and follow the prompts

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UNIRAS wishes to acknowledge the contributions of Gentoo for the information 
contained in this Briefing. 
- ----------------------------------------------------------------------------------
This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

Reference to any specific commercial product, process, or service by trade 
name, trademark manufacturer, or otherwise, does not constitute or imply 
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or omissions contained within this briefing notice. In particular, they shall 
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with the usage of information contained within this notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST) 
and has contacts with other international Incident Response Teams (IRTs) in 
order to foster cooperation and coordination in incident prevention, to prompt 
rapid reaction to incidents, and to promote information sharing amongst its 
members and the community at large. 
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<End of UNIRAS Briefing>

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