[SECURITY] [DSA 2217-1] dhcp3 security update

2011-04-1021:58:40

lists.debian.org

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.971 High

EPSS

Percentile

99.8%

JSON

Debian Security Advisory DSA-2217-1 [email protected]
http://www.debian.org/security/ Nico Golde
April 10, 2011 http://www.debian.org/security/faq

Package : dhcp3
Vulnerability : missing input sanitization
Problem type : remote
Debian-specific: no
CVE ID : CVE-2011-0997

Sebastian Krahmer and Marius Tomaschewski discovered that dhclient of
dhcp3, a DHCP client, is not properly filtering shell meta-characters
in certain options in DHCP server responses. These options are reused in
an insecure fashion by dhclient scripts. This allows an attacker to execute
arbitrary commands with the privileges of such a process by sending crafted
DHCP options to a client using a rogue server.

For the oldstable distribution (lenny), this problem has been fixed in
version 3.1.1-6+lenny5.

For the stable (squeeze), testing (wheezy) and unstable (sid) distributions,
this problem has been fixed in an additional update for isc-dhcp.

We recommend that you upgrade your dhcp3 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: [email protected]

OSVersionArchitecturePackageVersionFilename
Debian6sparcisc-dhcp-client-dbg< 4.1.1-P1-15+squeeze2isc-dhcp-client-dbg_4.1.1-P1-15+squeeze2_sparc.deb
Debian5i386dhcp3-common< 3.1.1-6+lenny5dhcp3-common_3.1.1-6+lenny5_i386.deb
Debian5sparcdhcp3-server-ldap< 3.1.1-6+lenny5dhcp3-server-ldap_3.1.1-6+lenny5_sparc.deb
Debian5i386dhcp3-client-udeb< 3.1.1-6+lenny5dhcp3-client-udeb_3.1.1-6+lenny5_i386.deb
Debian5alphadhcp3-server< 3.1.1-6+lenny5dhcp3-server_3.1.1-6+lenny5_alpha.deb
Debian6ia64isc-dhcp-server-dbg< 4.1.1-P1-15+squeeze2isc-dhcp-server-dbg_4.1.1-P1-15+squeeze2_ia64.deb
Debian6armelisc-dhcp-server< 4.1.1-P1-15+squeeze2isc-dhcp-server_4.1.1-P1-15+squeeze2_armel.deb
Debian6alldhcp3-server< 4.1.1-P1-15+squeeze2dhcp3-server_4.1.1-P1-15+squeeze2_all.deb
Debian6alldhcp3-client< 4.1.1-P1-15+squeeze2dhcp3-client_4.1.1-P1-15+squeeze2_all.deb
Debian5mipsdhcp3-relay< 3.1.1-6+lenny5dhcp3-relay_3.1.1-6+lenny5_mips.deb

OS	Version	Architecture	Package	Version	Filename
Debian	6	sparc	isc-dhcp-client-dbg	< 4.1.1-P1-15+squeeze2	isc-dhcp-client-dbg_4.1.1-P1-15+squeeze2_sparc.deb
Debian	5	i386	dhcp3-common	< 3.1.1-6+lenny5	dhcp3-common_3.1.1-6+lenny5_i386.deb
Debian	5	sparc	dhcp3-server-ldap	< 3.1.1-6+lenny5	dhcp3-server-ldap_3.1.1-6+lenny5_sparc.deb
Debian	5	i386	dhcp3-client-udeb	< 3.1.1-6+lenny5	dhcp3-client-udeb_3.1.1-6+lenny5_i386.deb
Debian	5	alpha	dhcp3-server	< 3.1.1-6+lenny5	dhcp3-server_3.1.1-6+lenny5_alpha.deb
Debian	6	ia64	isc-dhcp-server-dbg	< 4.1.1-P1-15+squeeze2	isc-dhcp-server-dbg_4.1.1-P1-15+squeeze2_ia64.deb
Debian	6	armel	isc-dhcp-server	< 4.1.1-P1-15+squeeze2	isc-dhcp-server_4.1.1-P1-15+squeeze2_armel.deb
Debian	6	all	dhcp3-server	< 4.1.1-P1-15+squeeze2	dhcp3-server_4.1.1-P1-15+squeeze2_all.deb
Debian	6	all	dhcp3-client	< 4.1.1-P1-15+squeeze2	dhcp3-client_4.1.1-P1-15+squeeze2_all.deb
Debian	5	mips	dhcp3-relay	< 3.1.1-6+lenny5	dhcp3-relay_3.1.1-6+lenny5_mips.deb