Debian: 'screen' vulnerability

    Date04 Sep 2000
    CategoryDebian
    2727
    Posted ByLinuxSecurity Advisories
    A format string bug was recently discovered in screen which can be used to gain elevated privilages if screen is setuid.
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    Debian Security Advisory                             This email address is being protected from spambots. You need JavaScript enabled to view it. 
    http://www.debian.org/security/                            Michael Stone
    September  2, 2000
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    Package: screen
    Vulnerability: local exploit
    Debian-specific: no
    
    A format string bug was recently discovered in screen which can be used
    to gain elevated privilages if screen is setuid. Debian 2.1 (slink) did
    ship screen setuid and the exploit can be used to gain root privilages.
    In Debian 2.2 (potato) screen is not setuid, and is not vulnerable to a
    root exploit. screen is, however, setgid utmp in Debian 2.2 (potato) and
    we recommend upgrading.
    
    A fixed version of screen is available in version 3.7.4-9.1 for Debian
    2.1 (slink) and in version 3.9.5-9 for Debian 2.2 (potato).
    
    wget url
            will fetch the file for you
    dpkg -i file.deb
            will install the referenced file.
    
    You may use an automated update by adding the resources from the
    footer to the proper configuration.
    
    Debian GNU/Linux 2.1 alias slink
    - ------------------------------------
      
      Slink was released for alpha, i386, m68k and sparc architectures.
      We are releasing binary packages for i386 only at this time.
      
      Source archives:
     
    http://security.debian.org/dists/slink/updates/source/screen_3.7.4-9.1.diff.gz
          MD5 checksum: 20af8bde6e87398db100a817ab81c173
         http://security.debian.org/dists/slink/updates/source/screen_3.7.4-9.1.dsc
          MD5 checksum: 8c391f8c6a9af846b60701c6677e4d25
                        
    http://security.debian.org/dists/slink/updates/source/screen_3.7.4.orig.tar.gz
          MD5 checksum: c5ab40b068968075e41e25607dfce543
      
      Intel ia32 archives:
     
    http://security.debian.org/dists/slink/updates/binary-i386/screen_3.7.4-9.1_i386.deb
          MD5 checksum: a62f293aa7e0876cf49d51d3d216c09a
    
    
    Debian GNU/Linux 2.2 alias potato
    - ------------------------------------
    
      Potato was released for the alpha, arm, i386, m68k, powerpc and sparc
      architectures. At this moment packages  for m68k are not yet
      available. As soon as they are ready we will put them online and
      list them on the security pages at  http://security.debian.org/.
    
      Source archives:
        
    http://security.debian.org/dists/stable/updates/main/source/screen_3.9.5-9.diff.gz
          MD5 checksum: ac7f482241e3d26df3ebe8a77090d862
        
    http://security.debian.org/dists/stable/updates/main/source/screen_3.9.5-9.dsc
          MD5 checksum: e4b616aed2e0653a60f81a0febdde994
        
    http://security.debian.org/dists/stable/updates/main/source/screen_3.9.5.orig.tar.gz
          MD5 checksum: ac7dd525b0920bc98e4af75b0f73c73e
    
      Alpha architecture:
        
    http://security.debian.org/dists/stable/updates/main/binary-alpha/screen_3.9.5-9_alpha.deb
          MD5 checksum: beed25398f11afcb8cedb38c9ad0b369
    
      ARM architecture:
        
    http://security.debian.org/dists/stable/updates/main/binary-arm/screen_3.9.5-9_arm.deb
          MD5 checksum: d68e85b057eb4d362b4b5421ea0de977
    
      Intel ia32 architecture:
        
    http://security.debian.org/dists/stable/updates/main/binary-i386/screen_3.9.5-9_i386.deb
          MD5 checksum: 139c65e404139f6681a4e60b4ef708f1
    
      PowerPC architecture:
        
    http://security.debian.org/dists/stable/updates/main/binary-powerpc/screen_3.9.5-9_powerpc.deb
          MD5 checksum: af26d17cc292797ff1ebeab7fd1c29ae
    
      Sun Sparc architecture:
     
    http://security.debian.org/dists/stable/updates/main/binary-sparc/screen_3.9.5-9_sparc.deb
          MD5 checksum: 05b7392240ca7ed901a47a7f643030d3
    
    
    For not yet released architectures please refer to the appropriate
    directory  ftp://ftp.debian.org/debian/dists/sid/binary-$arch/ .
    
    - ----------------------------------------------------------------------------
    For apt-get: deb  http://security.debian.org/ stable/updates main
    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.
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