Debian: New xfs packages fix privilege escalation

    Date30 Jul 2007
    CategoryDebian
    2927
    Posted ByLinuxSecurity Advisories
    It was discovered that a race condition in the init.d script of the X Font Server allows the modification of file permissions of arbitrary files if the local administrator can be tricked into restarting the X font server.
    - --------------------------------------------------------------------------
    Debian Security Advisory DSA 1342-1                    This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                         Moritz Muehlenhoff
    July 30th, 2007                         http://www.debian.org/security/faq
    - --------------------------------------------------------------------------
    
    Package        : xfs
    Vulnerability  : race condition
    Problem-Type   : local
    Debian-specific: no
    CVE ID         : CVE-2007-3103 
    
    It was discovered that a race condition in the init.d script of the X Font
    Server allows the modification of file permissions of arbitrary files if
    the local administrator can be tricked into restarting the X font server.
    
    For the oldstable distribution (sarge) xfs is present as part of the
    monolithic xfree86 package. A fix will be provided along with a future
    security update.
    
    For the stable distribution (etch) this problem has been fixed in
    version 1.0.1-6.
    
    For the unstable distribution (sid) this problem has been fixed in
    version 1.0.4-2.
    
    We recommend that you upgrade your xfs 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/xfs/xfs_1.0.1-6.dsc
          Size/MD5 checksum:      794 938a05eb2b1638fc49b4d7101084c69b
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6.diff.gz
          Size/MD5 checksum:    28440 0eeacd5783c66b937eaa1dbde6145401
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1.orig.tar.gz
          Size/MD5 checksum:   174623 32e8b6b24ec3d4c0de11d81061640cc2
    
      Alpha architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_alpha.deb
          Size/MD5 checksum:    75520 0becb7909f5d9df1621d1a8b153eab2b
    
      AMD64 architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_amd64.deb
          Size/MD5 checksum:    65224 632e1a2416a91e079fe16f19f8c18f37
    
      ARM architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_arm.deb
          Size/MD5 checksum:    61330 41a50afe7ca54708028f8929ef9f62a8
    
      HP Precision architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_hppa.deb
          Size/MD5 checksum:    68312 31b1450c324283337298f0671491eddd
    
      Intel IA-32 architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_i386.deb
          Size/MD5 checksum:    56856 40191532dd37541d09a9ff62bf9e6189
    
      Intel IA-64 architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_ia64.deb
          Size/MD5 checksum:    97348 31aacc8828c1dc532db8d5b630de5f5c
    
      Big endian MIPS architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_mips.deb
          Size/MD5 checksum:    69112 c0797a23074512e31edeef83a57817b5
    
      Little endian MIPS architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_mipsel.deb
          Size/MD5 checksum:    69032 3a44f04fd9e3f4b84fd03889bcebeb56
    
      PowerPC architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_powerpc.deb
          Size/MD5 checksum:    64512 00d156e38ef0cf5f5257ae90cef496a2
    
      IBM S/390 architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_s390.deb
          Size/MD5 checksum:    67514 710d362f9183b98f817736e466c89d35
    
      Sun Sparc architecture:
    
        http://security.debian.org/pool/updates/main/x/xfs/xfs_1.0.1-6_sparc.deb
          Size/MD5 checksum:    57382 8a32daa22fd7630ff4101e21a4cfaf7d
    
    
      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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