Advisories, June 7, 2006

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Gentoo Linux Security Advisory GLSA 200606-02

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http://security.gentoo.org/

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Severity: Normal
Title: shadow: Privilege escalation
Date: June 07, 2006
Bugs: #133615
ID: 200606-02

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Synopsis

A security issue in shadow allows a local user to perform
certain actions with escalated privileges. Background

shadow provides a set of utilities to deal with user
accounts.

Affected packages

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     Package          /   Vulnerable   /                    Unaffected

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  1  sys-apps/shadow      < 4.0.15-r2                     >= 4.0.15-r2

Description

When the mailbox is created in useradd, the “open()” function
does not receive the three arguments it expects while O_CREAT is
present, which leads to random permissions on the created file,
before fchmod() is executed.

Impact

Depending on the random permissions given to the mailbox file
which is at this time owned by root, a local user may be able to
open this file for reading or writing, or even executing it, maybe
as the root user.

Workaround

There is no known workaround at this time.

Resolution

All shadow users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=sys-apps/shadow-4.0.15-r2"

References

[ 1 ] CVE-2006-1174

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1174

Availability

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

http://security.gentoo.org/glsa/glsa-200606-02.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/2.5

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Gentoo Linux Security Advisory GLSA 200606-03

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http://security.gentoo.org/

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Severity: Normal
Title: Dia: Format string vulnerabilities
Date: June 07, 2006
Bugs: #133699
ID: 200606-03

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Synopsis

Format string vulnerabilities in Dia may lead to the execution
of arbitrary code.

Background

Dia is a GTK+ based diagram creation program.

Affected packages

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     Package         /  Vulnerable  /                       Unaffected

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  1  app-office/dia      < 0.95.1                            >= 0.95.1

Description

KaDaL-X discovered a format string error within the handling of
filenames. Hans de Goede also discovered several other format
string errors in the processing of dia files.

Impact

By enticing a user to open a specially crafted file, a remote
attacker could exploit these vulnerabilities to execute arbitrary
code with the rights of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

All Dia users should upgrade to the latest available
version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-office/dia-0.95.1"

References

[ 1 ] CVE-2006-2453

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2453

[ 2 ] CVE-2006-2480

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2480

Availability

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

http://security.gentoo.org/glsa/glsa-200606-03.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/2.5