Ubuntu 8.04 LTS / 8.10 / 9.04 : dnsmasq vulnerabilities (USN-827-1)

Ubuntu Security Notice (C) 2009-2016 Canonical, Inc. / NASL script (C) 2009-2016 Tenable Network Security, Inc.


Synopsis :

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

Description :

IvAin Arce, Pablo HernAin Jorge, Alejandro Pablo Rodriguez, MartAn
Coco, Alberto SoliAto Testa and Pablo Annetta discovered that Dnsmasq
did not properly validate its input when processing TFTP requests for
files with long names. A remote attacker could cause a denial of
service or execute arbitrary code with user privileges. Dnsmasq runs
as the 'dnsmasq' user by default on Ubuntu. (CVE-2009-2957)

Steve Grubb discovered that Dnsmasq could be made to dereference a
NULL pointer when processing certain TFTP requests. A remote attacker
could cause a denial of service by sending a crafted TFTP request.
(CVE-2009-2958).

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.

Solution :

Update the affected dnsmasq and / or dnsmasq-base packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.9
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 40848 ()

Bugtraq ID: 36120

CVE ID: CVE-2009-2957
CVE-2009-2958

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