Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : linux, linux-source-2.6.15/20/22 vulnerabilities (USN-637-1)

Ubuntu Security Notice (C) 2008-2014 Canonical, Inc. / NASL script (C) 2008-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

It was discovered that there were multiple NULL pointer function
dereferences in the Linux kernel terminal handling code. A local
attacker could exploit this to execute arbitrary code as root, or
crash the system, leading to a denial of service. (CVE-2008-2812)

The do_change_type routine did not correctly validation administrative
users. A local attacker could exploit this to block mount points or
cause private mounts to be shared, leading to denial of service or a
possible loss of privacy. (CVE-2008-2931)

Tobias Klein discovered that the OSS interface through ALSA did not
correctly validate the device number. A local attacker could exploit
this to access sensitive kernel memory, leading to a denial of service
or a loss of privacy. (CVE-2008-3272)

Zoltan Sogor discovered that new directory entries could be added to
already deleted directories. A local attacker could exploit this,
filling up available memory and disk space, leading to a denial of
service. (CVE-2008-3275)

In certain situations, the fix for CVE-2008-0598 from USN-623-1 was
causing infinite loops in the writev syscall. This update corrects the
mistake. We apologize for the inconvenience.

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.0
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 34048 ()

Bugtraq ID: 30647

CVE ID: CVE-2008-0598
CVE-2008-2812
CVE-2008-2931
CVE-2008-3272
CVE-2008-3275