Ubuntu 5.04 / 5.10 / 6.06 LTS : krb5 vulnerabilities (USN-334-1)

High Nessus Plugin ID 27913


The remote Ubuntu host is missing one or more security-related patches.


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).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected packages.

Plugin Details

Severity: High

ID: 27913

File Name: ubuntu_USN-334-1.nasl

Version: $Revision: 1.11 $

Type: local

Agent: unix

Published: 2007/11/10

Modified: 2016/05/27

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:krb5-admin-server, p-cpe:/a:canonical:ubuntu_linux:krb5-clients, p-cpe:/a:canonical:ubuntu_linux:krb5-doc, p-cpe:/a:canonical:ubuntu_linux:krb5-ftpd, p-cpe:/a:canonical:ubuntu_linux:krb5-kdc, p-cpe:/a:canonical:ubuntu_linux:krb5-rsh-server, p-cpe:/a:canonical:ubuntu_linux:krb5-telnetd, p-cpe:/a:canonical:ubuntu_linux:krb5-user, p-cpe:/a:canonical:ubuntu_linux:libkadm55, p-cpe:/a:canonical:ubuntu_linux:libkrb5-dev, p-cpe:/a:canonical:ubuntu_linux:libkrb53, cpe:/o:canonical:ubuntu_linux:5.04, cpe:/o:canonical:ubuntu_linux:5.10, cpe:/o:canonical:ubuntu_linux:6.06:-:lts

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2006/08/16

Vulnerability Publication Date: 2006/08/08

Reference Information

CVE: CVE-2006-3083, CVE-2006-3084

BID: 19427

OSVDB: 27869, 27870, 27871, 27872

USN: 334-1