Debian: New unzip packages fix unauthorised permissions modification

    Date27 Jan 2006
    CategoryDebian
    3497
    Posted ByLinuxSecurity Advisories
    The unzip update in DSA 903 contained a regression so that symbolic links that are resolved later in a zip archive aren't supported anymore. This update corrects this behaviour.
    - --------------------------------------------------------------------------
    Debian Security Advisory DSA 903-2                     This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                             Martin Schulze
    January 12th, 2006                      http://www.debian.org/security/faq
    - --------------------------------------------------------------------------
    
    Package        : unzip
    Vulnerability  : race condition
    Problem type   : local
    Debian-specific: no
    CVE ID         : CAN-2005-2475
    BugTraq ID     : 14450
    Debian Bugs    : 321927 343680
    
    The unzip update in DSA 903 contained a regression so that symbolic
    links that are resolved later in a zip archive aren't supported
    anymore.  This update corrects this behaviour.  For completeness,
    below plese find the original advisory text:
    
       Imran Ghory discovered a race condition in the permissions setting
       code in unzip.  When decompressing a file in a directory an
       attacker has access to, unzip could be tricked to set the file
       permissions to a different file the user has permissions to.
    
    For the old stable distribution (woody) this problem has been fixed in
    version 5.50-1woody5.
    
    For the stable distribution (sarge) this problem has been fixed in
    version 5.52-1sarge3.
    
    For the unstable distribution (sid) this problem has been fixed in
    version 5.52-6.
    
    We recommend that you upgrade your unzip 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/u/unzip/unzip_5.50-1woody5.dsc
          Size/MD5 checksum:      571 75e2923b74af607785cbefbbea79d1ab
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5.diff.gz
          Size/MD5 checksum:     6484 73efae47dcd377abb934e36805c16190
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50.orig.tar.gz
          Size/MD5 checksum:  1068379 6d27bcdf9b51d0ad0f78161d0f99582e
    
      Alpha architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_alpha.deb
          Size/MD5 checksum:   160482 94b0a5e18d78866d92f375d6b93a22c3
    
      ARM architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_arm.deb
          Size/MD5 checksum:   139374 bd8cc4c654c901b5c320b2cdbf09f31b
    
      Intel IA-32 architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_i386.deb
          Size/MD5 checksum:   122808 1d5669290431fb7fe83f688447b22d84
    
      Intel IA-64 architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_ia64.deb
          Size/MD5 checksum:   191010 1cd02c151f46b5f7872a7de3079ebc2a
    
      HP Precision architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_hppa.deb
          Size/MD5 checksum:   146954 ee23ad6e2c40d38e4655be1f2666489d
    
      Motorola 680x0 architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_m68k.deb
          Size/MD5 checksum:   119578 7765363163750bed7e72472bee09afc4
    
      Big endian MIPS architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_mips.deb
          Size/MD5 checksum:   142950 97af77c03fb69936407c86394fb846a5
    
      Little endian MIPS architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_mipsel.deb
          Size/MD5 checksum:   143422 98a0ab0fd751c246ebd50e5c62886217
    
      PowerPC architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_powerpc.deb
          Size/MD5 checksum:   136368 b2bea065ae91032fe987aaf120e08ad9
    
      IBM S/390 architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_s390.deb
          Size/MD5 checksum:   137044 151da2fddaaca890dbf5166140f23881
    
      Sun Sparc architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.50-1woody5_sparc.deb
          Size/MD5 checksum:   147498 022e8ca1cecf20178edd68296fd973aa
    
    
    Debian GNU/Linux 3.1 alias sarge
    - --------------------------------
    
      Source archives:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3.dsc
          Size/MD5 checksum:      528 b6e01dbb89f9130fa16650b16f4d4e32
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3.diff.gz
          Size/MD5 checksum:     5387 807b5d9e8efa85e8caab673eff38aff7
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52.orig.tar.gz
          Size/MD5 checksum:  1140291 9d23919999d6eac9217d1f41472034a9
    
      Alpha architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_alpha.deb
          Size/MD5 checksum:   175506 90375091fd0c2577518bfd7db2202272
    
      AMD64 architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_amd64.deb
          Size/MD5 checksum:   154876 7129ee6610e6ec0320141bb7aaa5288e
    
      ARM architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_arm.deb
          Size/MD5 checksum:   155430 3fb2c5576d1709c6d7cc1b89d61a50b8
    
      Intel IA-32 architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_i386.deb
          Size/MD5 checksum:   144934 0e860597ffe259038f7bb8e1ce2630df
    
      Intel IA-64 architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_ia64.deb
          Size/MD5 checksum:   206648 d261bf8a2e3c8fce3d0898355a7420db
    
      HP Precision architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_hppa.deb
          Size/MD5 checksum:   162840 91d7d512b915757bf7c7e3e8640efa0c
    
      Motorola 680x0 architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_m68k.deb
          Size/MD5 checksum:   133734 878d1597bd5ef623a6bc70f6446654a4
    
      Big endian MIPS architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_mips.deb
          Size/MD5 checksum:   163396 5cbe0e22136949f240031502ea07d456
    
      Little endian MIPS architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_mipsel.deb
          Size/MD5 checksum:   163966 4066fa1e97bad61c47be9b6ffa47179f
    
      PowerPC architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_powerpc.deb
          Size/MD5 checksum:   157388 25c3d9d685ec411e5b53cc0e8002ca8e
    
      IBM S/390 architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_s390.deb
          Size/MD5 checksum:   156494 bfeb0b1d801266334e6a46f0818a9e6f
    
      Sun Sparc architecture:
    
        http://security.debian.org/pool/updates/main/u/unzip/unzip_5.52-1sarge3_sparc.deb
          Size/MD5 checksum:   154952 e1e42335312202d8b3f0727e9d78fda9
    
    
      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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