DSA 1876-1: New dnsmasq packages fix remote code execution

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Debian Security Advisory DSA-1876-1 security@debian.org
http://www.debian.org/security/ Florian Weimer
September 01, 2009 http://www.debian.org/security/faq
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Package : dnsmasq
Vulnerability : buffer overflow
Problem type : remote
Debian-specific: no
CVE Id(s) : CVE-2009-2957 CVE-2009-2958

Several remote vulnerabilities have been discovered in the TFTP
component of dnsmasq. The Common Vulnerabilities and Exposures
project identifies the following problems:

CVE-2009-2957
A buffer overflow in TFTP processing may enable arbitrary code
execution to attackers which are permitted to use the TFTP service.

CVE-2009-2958
Malicious TFTP clients may crash dnsmasq, leading to denial of
service.

The old stable distribution is not affected by these problems.

For the stable distribution (lenny), these problems have been fixed in
version 2.45-1+lenny1.

For the unstable distribution (sid), these problems have been fixed in
version 2.50-1.

We recommend that you upgrade your dnsmasq packages.

Upgrade instructions
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wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 5.0 alias lenny
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Source archives:

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.45.orig.tar.gz
Size/MD5 checksum: 377466 59106495260bb2d0f184f0d4ae88d740
http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.45-1+lenny1.diff.gz
Size/MD5 checksum: 14514 c841708d86ea6a13f4f168d311638ff5
http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.45-1+lenny1.dsc
Size/MD5 checksum: 1006 377658fb3cb46cc670a86e475ff70533

Architecture independent packages:

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.45-1+lenny1_all.deb
Size/MD5 checksum: 12110 716c6f4f6e478f5a0f248725e4544dda

alpha architecture (DEC Alpha)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_alpha.deb
Size/MD5 checksum: 267294 d7ba6bd2b7363246587cf4ab8b78f721

amd64 architecture (AMD x86_64 (AMD64))

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_amd64.deb
Size/MD5 checksum: 258118 3b5fc290f6bfacd7450fbc138e63bcb7

arm architecture (ARM)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_arm.deb
Size/MD5 checksum: 250676 0011c21826ab5f3b9c64444113acc97f

armel architecture (ARM EABI)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_armel.deb
Size/MD5 checksum: 252830 5999eff243a849fe31fba765e92228d0

hppa architecture (HP PA RISC)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_hppa.deb
Size/MD5 checksum: 258292 cadea4880ef01292affd271cde276226

i386 architecture (Intel ia32)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_i386.deb
Size/MD5 checksum: 251182 cdad8cd873dc28fd69fdd7ca2e59cec1

ia64 architecture (Intel ia64)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_ia64.deb
Size/MD5 checksum: 301522 2723ddacd61bf4378115a1701848fa2c

mips architecture (MIPS (Big Endian))

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_mips.deb
Size/MD5 checksum: 256426 0873691aa0b37c2873e93e1132d0db95

mipsel architecture (MIPS (Little Endian))

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_mipsel.deb
Size/MD5 checksum: 257982 dd6342a053fc0bb9a3be6ec5b4aa3b2f

powerpc architecture (PowerPC)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_powerpc.deb
Size/MD5 checksum: 257426 58e705f584e41b2598a6d62bfc7e2671

s390 architecture (IBM S/390)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_s390.deb
Size/MD5 checksum: 255328 3abfb764f944344064aed16352156b04

sparc architecture (Sun SPARC/UltraSPARC)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq-base_2.45-1+lenny1_sparc.deb
Size/MD5 checksum: 252234 4a6db5969b47698346b59828928dc0b5


These files will probably be moved into the stable distribution on
its next update.

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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show lt;pkggt;' and http://packages.debian.org/lt;pkggt;
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