Debian: gatos Privilege escalation vulnerability

    Date08 Jun 2004
    CategoryDebian
    1971
    Posted ByLinuxSecurity Advisories
    If initialization fails due to a missing configuration file, root privileges are not dropped, and xatitv executes the system(3) function without sanitizing user-supplied environment variables.
    
    Debian Security Advisory DSA 509-1                     This email address is being protected from spambots. You need JavaScript enabled to view it. 
    http://www.debian.org/security/                             Matt Zimmerman
    May 29th, 2004                           http://www.debian.org/security/faq
    - --------------------------------------------------------------------------
    
    Package        : gatos
    Vulnerability  : privilege escalation
    Problem-Type   : local
    Debian-specific: no
    CVE Ids        : CAN-2004-0395
    
    Steve Kemp discovered a vulnerability in xatitv, one of the programs
    in the gatos package, which is used to display video with certain
    ATI video cards.
    
    xatitv is installed setuid root in order to gain direct access to the
    video hardware.  It normally drops root privileges after successfully
    initializing itself.  However, if initialization fails due to a
    missing configuration file, root privileges are not dropped, and
    xatitv executes the system(3) function to launch its configuration
    program without sanitizing user-supplied environment variables.
    
    By exploiting this vulnerability, a local user could gain root
    privileges if the configuration file does not exist.  However, a
    default configuration file is supplied with the package, and so this
    vulnerability is not exploitable unless this file is removed by the
    administrator.
    
    For the current stable distribution (woody) this problem has been
    fixed in version 0.0.5-6woody1.
    
    For the unstable distribution (sid), this problem will be fixed soon.
    
    We recommend that you update your gatos 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 3.0 alias woody
    - --------------------------------
    
      Source archives:
    
         http://security.debian.org/pool/updates/main/g/gatos/gatos_0.0.5-6woody1.dsc
          Size/MD5 checksum:      629 73d7637956bdcc827fb3c9be500902a0
         http://security.debian.org/pool/updates/main/g/gatos/gatos_0.0.5-6woody1.diff.gz
          Size/MD5 checksum:    40666 2ff18e9bbf71ea71ce9b2a43486c8cc6
         http://security.debian.org/pool/updates/main/g/gatos/gatos_0.0.5.orig.tar.gz
          Size/MD5 checksum:   483916 9c16631afc933bde6f5d5e1421efddb7
    
      Intel IA-32 architecture:
    
         http://security.debian.org/pool/updates/main/g/gatos/gatos_0.0.5-6woody1_i386.deb
          Size/MD5 checksum:   176268 d64a2e508adbd6423c6a0bbf2426c11b
         http://security.debian.org/pool/updates/main/g/gatos/libgatos-dev_0.0.5-6woody1_i386.deb
          Size/MD5 checksum:   109416 81ada7ba7f2d0d44d2cf107154a2cd93
         http://security.debian.org/pool/updates/main/g/gatos/libgatos0_0.0.5-6woody1_i386.deb
          Size/MD5 checksum:    75040 4c2f9aea5082612027d520bab82dbff5
    
      These files will probably be moved into the stable distribution on
      its next revision.
    
    - ---------------------------------------------------------------------------------
    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: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Package info: `apt-cache show ' and  http://packages.debian.org/
    
    
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