Debian: New xen-utils packages fix several vulnerabilities

    Date05 Oct 2007
    CategoryDebian
    2172
    Posted ByLinuxSecurity Advisories
    Several local vulnerabilities have been discovered in the Xen hypervisor packages which may lead to the execution of arbitrary code. By use of a specially crafted grub configuration file a domU user may be able to execute arbitrary code upon the dom0 when pygrub is being used.
    - ------------------------------------------------------------------------
    Debian Security Advisory DSA 1384-1                  This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                               Steve Kemp
    October 5th, 2007                     http://www.debian.org/security/faq
    - ------------------------------------------------------------------------
    
    Package        : xen-utils
    Vulnerability  : various
    Problem type   : local
    Debian-specific: no
    CVE Id(s)      : CVE-2007-4993, CVE-2007-1320
    Debian Bug     : 444430, 444007
    
    
    Several local vulnerabilities have been discovered in the Xen hypervisor
    packages which may lead to the execution of arbitrary code. The Common
    Vulnerabilities and Exposures project identifies the following problems:
    
    CVE-2007-4993
    
       By use of a specially crafted grub configuration file a domU user
      may be able to execute arbitary code upon the dom0 when pygrub is
      being used.
    
    CVE-2007-1320
    
       Multiple heap-based buffer overflows in the Cirrus VGA extension,
      provided by QEMU, may allow local users to execute arbitrary code
      via "bitblt" heap overflow.
    
    
    For the stable distribution (etch), these problems have been fixed in version
    3.0.3-0-3.
    
    For the unstable distribution (sid), these problems will be fixed soon.
    
    We recommend that you upgrade your xen-utils package.
    
    
    Upgrade instructions
    - --------------------
    
    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 4.0 alias etch
    - --------------------------------
    
    Source archives:
    
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-3.0_3.0.3-0.orig.tar.gz
        Size/MD5 checksum:  6127238 71257a2d977a601594c70c9eac0a121b
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-3.0_3.0.3-0-3.diff.gz
        Size/MD5 checksum:    28697 64f2dd856726a95d88fe48531e987ff4
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-3.0_3.0.3-0-3.dsc
        Size/MD5 checksum:     1115 d42726f5a374bfb8eb1a6618174ff893
    
    Architecture independent packages:
    
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-docs-3.0_3.0.3-0-3_all.deb
        Size/MD5 checksum:   533396 b91af7395e7a1169be06ced33ef56daa
    
    amd64 architecture (AMD x86_64 (AMD64))
    
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-utils-3.0.3-1_3.0.3-0-3_amd64.deb
        Size/MD5 checksum:   368012 b4ceb2935cf07339c98b7aa67709a508
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-ioemu-3.0.3-1_3.0.3-0-3_amd64.deb
        Size/MD5 checksum:   331438 f7f8a51f48c87072fe2c0ffd03e066aa
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-hypervisor-3.0.3-1-amd64_3.0.3-0-3_amd64.deb
        Size/MD5 checksum:   269956 7957630a8fcd612e7492b7d14a36512d
    
    i386 architecture (Intel ia32)
    
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-hypervisor-3.0.3-1-i386-pae_3.0.3-0-3_i386.deb
        Size/MD5 checksum:   273756 f36f6d51efa2c545d98275e63965569c
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-ioemu-3.0.3-1_3.0.3-0-3_i386.deb
        Size/MD5 checksum:   326526 b198abda8622589fb4dd0141744dddf0
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-utils-3.0.3-1_3.0.3-0-3_i386.deb
        Size/MD5 checksum:   347860 954ccb3ddf9aea5fa5a09e08abd6c95c
      http://security.debian.org/pool/updates/main/x/xen-3.0/xen-hypervisor-3.0.3-1-i386_3.0.3-0-3_i386.deb
        Size/MD5 checksum:   253984 b92b82d449805ff4a8d8f90b655be600
    
    
      These files will probably be moved into the stable distribution on
      its next update.
    
    - ---------------------------------------------------------------------------------
    For apt-get: deb http://security.debian.org/ stable/updates main
    For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
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