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Test ID:1.3.6.1.4.1.25623.1.0.57308
Category:Ubuntu Local Security Checks
Title:Ubuntu USN-334-1 (krb5)
Summary:Ubuntu USN-334-1 (krb5)
Description:
The remote host is missing an update to krb5
announced via advisory USN-334-1.

A security issue affects the following Ubuntu releases:

Ubuntu 5.04
Ubuntu 5.10
Ubuntu 6.06 LTS

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

Michael Calmer and Marcus Meissner discovered that several krb5 tools
did not check the return values from setuid() system calls. On systems
that have configured user process limits, it may be possible for an
attacker to cause setuid() to fail via resource starvation. In that
situation, the tools will not reduce their privilege levels, and will
continue operation as the root user.

By default, Ubuntu does not ship with user process limits.

Please note that these packages are not officially supported by Ubuntu
(they are in the 'universe' component of the archive).

Solution:
The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 5.04:
krb5-clients 1.3.6-1ubuntu0.2
krb5-ftpd 1.3.6-1ubuntu0.2
krb5-rsh-server 1.3.6-1ubuntu0.2
krb5-user 1.3.6-1ubuntu0.2

Ubuntu 5.10:
krb5-clients 1.3.6-4ubuntu0.1
krb5-ftpd 1.3.6-4ubuntu0.1
krb5-rsh-server 1.3.6-4ubuntu0.1
krb5-user 1.3.6-4ubuntu0.1

Ubuntu 6.06 LTS:
krb5-clients 1.4.3-5ubuntu0.1
krb5-ftpd 1.4.3-5ubuntu0.1
krb5-rsh-server 1.4.3-5ubuntu0.1
krb5-user 1.4.3-5ubuntu0.1

In general, a standard system upgrade is sufficient to effect the
necessary changes.

http://www.securityspace.com/smysecure/catid.html?in=USN-334-1

Risk factor : High
Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2006-3083
Bugtraq: 20060808 MITKRB-SA-2006-001: multiple local privilege escalation vulnerabilities (Google Search)
http://www.securityfocus.com/archive/1/archive/1/442599/100/0/threaded
Bugtraq: 20060816 UPDATED: MITKRB5-SA-2006-001: multiple local privilege escalation vulnerabilities (Google Search)
http://www.securityfocus.com/archive/1/archive/1/443498/100/100/threaded
Debian Security Information: DSA-1146 (Google Search)
http://www.debian.org/security/2006/dsa-1146
http://www.gentoo.org/security/en/glsa/glsa-200608-15.xml
http://security.gentoo.org/glsa/glsa-200608-21.xml
http://www.mandriva.com/security/advisories?name=MDKSA-2006:139
http://www.redhat.com/support/errata/RHSA-2006-0612.html
SuSE Security Announcement: SUSE-SR:2006:020 (Google Search)
http://www.novell.com/linux/security/advisories/2006_20_sr.html
SuSE Security Announcement: SUSE-SR:2006:022 (Google Search)
http://www.novell.com/linux/security/advisories/2006_22_sr.html
http://www.ubuntu.com/usn/usn-334-1
CERT/CC vulnerability note: VU#580124
http://www.kb.cert.org/vuls/id/580124
BugTraq ID: 19427
http://www.securityfocus.com/bid/19427
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:9515
http://www.vupen.com/english/advisories/2006/3225
http://www.osvdb.org/27869
http://www.osvdb.org/27870
http://securitytracker.com/id?1016664
http://secunia.com/advisories/21423
http://secunia.com/advisories/21436
http://secunia.com/advisories/21439
http://secunia.com/advisories/21461
http://secunia.com/advisories/21402
http://secunia.com/advisories/21441
http://secunia.com/advisories/21456
http://secunia.com/advisories/21527
http://secunia.com/advisories/22291
http://secunia.com/advisories/21613
http://secunia.com/advisories/21847
http://secunia.com/advisories/21467
Common Vulnerability Exposure (CVE) ID: CVE-2006-3084
http://fedoranews.org/cms/node/2376
CERT/CC vulnerability note: VU#401660
http://www.kb.cert.org/vuls/id/401660
http://www.osvdb.org/27871
http://www.osvdb.org/27872
http://secunia.com/advisories/23707
CopyrightCopyright (c) 2006 E-Soft Inc. http://www.securityspace.com

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