Articles / Ubuntu: New x11-xserver-uti…

Ubuntu: New x11-xserver-utils packages fix security vulnerabilities

Sebastian Krahmer discovered that the xrdb utility incorrectly filtered crafted hostnames. An attacker could use this flaw with a malicious DHCP server or with a remote xdmcp login and execute arbitrary code, resulting in root privilege escalation. Updated packages are available from security.ubuntu.com.

===========================================================
Ubuntu Security Notice USN-1107-1            April 06, 2011
x11-xserver-utils vulnerability
CVE-2011-0465
===========================================================

A security issue affects the following Ubuntu releases:

Ubuntu 8.04 LTS
Ubuntu 9.10
Ubuntu 10.04 LTS
Ubuntu 10.10

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 8.04 LTS:
 x11-xserver-utils               7.3+2ubuntu0.1

Ubuntu 9.10:
 x11-xserver-utils               7.4+2ubuntu3.1

Ubuntu 10.04 LTS:
 x11-xserver-utils               7.5+1ubuntu2.1

Ubuntu 10.10:
 x11-xserver-utils               7.5+2ubuntu1.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

Details follow:

Sebastian Krahmer discovered that the xrdb utility incorrectly filtered
crafted hostnames. An attacker could use this flaw with a malicious
DHCP server or with a remote xdmcp login and execute arbitrary code,
resulting in root privilege escalation.


Updated packages for Ubuntu 8.04 LTS:

 Source archives:

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.3+2ubuntu0.1.dsc
     Size/MD5:     1855 ed72ba7905552c8ad970eb9b6ea65735
   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.3+2ubuntu0.1.tar.gz
     Size/MD5:  1993520 fbcfdc97544d06d5956b553f154024a9

 amd64 architecture (Athlon64, Opteron, EM64T Xeon):

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.3+2ubuntu0.1_amd64.deb
     Size/MD5:   188578 55c51ac356a4c206986993426ef9c89a

 i386 architecture (x86 compatible Intel/AMD):

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.3+2ubuntu0.1_i386.deb
     Size/MD5:   173526 cff268921d0c6c4b0be4bd053c7a32ca

 lpia architecture (Low Power Intel Architecture):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.3+2ubuntu0.1_lpia.deb
     Size/MD5:   174206 537c0ee33f027fe77b2d988a19addc98

 powerpc architecture (Apple Macintosh G3/G4/G5):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.3+2ubuntu0.1_powerpc.deb
     Size/MD5:   223124 32704bc7de76ad266f152cd26a20799c

 sparc architecture (Sun SPARC/UltraSPARC):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.3+2ubuntu0.1_sparc.deb
     Size/MD5:   178220 ef7a7a8d0342e3453b00ee574c7f6f8e

Updated packages for Ubuntu 9.10:

 Source archives:

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.4+2ubuntu3.1.dsc
     Size/MD5:     2098 a8f51b5ddeb65b629fb7d3e37921bdb7
   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.4+2ubuntu3.1.tar.gz
     Size/MD5:  2027496 28363c3d291c9f299e40757abbd2ec11

 amd64 architecture (Athlon64, Opteron, EM64T Xeon):

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.4+2ubuntu3.1_amd64.deb
     Size/MD5:   204686 4c3899eabc2a94b9e3885e61aa8b435d

 i386 architecture (x86 compatible Intel/AMD):

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.4+2ubuntu3.1_i386.deb
     Size/MD5:   187160 a4493402abed14adba7e186e33117d86

 armel architecture (ARM Architecture):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.4+2ubuntu3.1_armel.deb
     Size/MD5:   189234 4d203c561b9c8fe91b50099e8c87cc11

 lpia architecture (Low Power Intel Architecture):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.4+2ubuntu3.1_lpia.deb
     Size/MD5:   185760 7acee417b2aee7c54ff7f3eed1301a9e

 powerpc architecture (Apple Macintosh G3/G4/G5):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.4+2ubuntu3.1_powerpc.deb
     Size/MD5:   197428 4e7151586bc4139098c820c1d1b812a3

 sparc architecture (Sun SPARC/UltraSPARC):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.4+2ubuntu3.1_sparc.deb
     Size/MD5:   196292 29e6bf5806bf8a492dbde60e48281fae

Updated packages for Ubuntu 10.04 LTS:

 Source archives:

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+1ubuntu2.1.dsc
     Size/MD5:     2053 af668fc46b52cbbb8fce94579db91662
   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+1ubuntu2.1.tar.gz
     Size/MD5:  2017972 d68d1519793de89571ed5c78eae9dd1c

 amd64 architecture (Athlon64, Opteron, EM64T Xeon):

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+1ubuntu2.1_amd64.deb
     Size/MD5:   185406 db3596b0abcd26fe8569687bf790d016

 i386 architecture (x86 compatible Intel/AMD):

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+1ubuntu2.1_i386.deb
     Size/MD5:   170078 7e6ea917d730b4b54bba69e4e3df533c

 armel architecture (ARM Architecture):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+1ubuntu2.1_armel.deb
     Size/MD5:   171114 a3281fd14dea567b7879ebe2c5782087

 powerpc architecture (Apple Macintosh G3/G4/G5):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+1ubuntu2.1_powerpc.deb
     Size/MD5:   180332 eb5deb911bd3098f6969e4c758bc5a07

 sparc architecture (Sun SPARC/UltraSPARC):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+1ubuntu2.1_sparc.deb
     Size/MD5:   182876 98a7170dd299c3d54b7d1b38f43e1058

Updated packages for Ubuntu 10.10:

 Source archives:

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+2ubuntu1.1.dsc
     Size/MD5:     2050 89b42bbb00b6f26578c875da2b0fd26c
   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+2ubuntu1.1.tar.gz
     Size/MD5:  2114046 fd0986fe6eced94861a5b5d012ee5e0b

 amd64 architecture (Athlon64, Opteron, EM64T Xeon):

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+2ubuntu1.1_amd64.deb
     Size/MD5:   185918 70308628801d2bca8c67d2941422e4fe

 i386 architecture (x86 compatible Intel/AMD):

   http://security.ubuntu.com/ubuntu/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+2ubuntu1.1_i386.deb
     Size/MD5:   170444 3da72942a1f2351e1f2d9616402b3f9a

 armel architecture (ARM Architecture):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+2ubuntu1.1_armel.deb
     Size/MD5:   180638 dfef48402643a2c0d6d718db0023dcb7

 powerpc architecture (Apple Macintosh G3/G4/G5):

   http://ports.ubuntu.com/pool/main/x/x11-xserver-utils/x11-xserver-utils_7.5+2ubuntu1.1_powerpc.deb
     Size/MD5:   180626 9e15d1f000b142344835c57179307227
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