Debian: openssl095 ASN.1 Remote vulnerability

    Date13 Oct 2003
    CategoryDebian
    2168
    Posted ByLinuxSecurity Advisories
    teve Henson of the OpenSSL core team identified and prepared fixesfor a number of vulnerabilities in the OpenSSL ASN1 code that werediscovered after running a test suite by British NationalInfrastructure Security Coordination Centre (NISCC).
    
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    Debian Security Advisory DSA 394-1                     This email address is being protected from spambots. You need JavaScript enabled to view it. 
    http://www.debian.org/security/                             Martin Schulze
    October 11th, 2003                       http://www.debian.org/security/faq
    - --------------------------------------------------------------------------
    
    Package        : openssl095
    Vulnerability  : ASN.1 parsing vulnerability
    Problem-Type   : remote
    Debian-specific: no
    CVE references : CAN-2003-0543 CAN-2003-0544 CAN-2003-0545
    
    Steve Henson of the OpenSSL core team identified and prepared fixes
    for a number of vulnerabilities in the OpenSSL ASN1 code that were
    discovered after running a test suite by British National
    Infrastructure Security Coordination Centre (NISCC).
    
    A bug in OpenSSLs SSL/TLS protocol was also identified which causes
    OpenSSL to parse a client certificate from an SSL/TLS client when it
    should reject it as a protocol error.
    
    The Common Vulnerabilities and Exposures project identifies the
    following problems:
    
    CAN-2003-0543:
    
       Integer overflow in OpenSSL that allows remote attackers to cause a
       denial of service (crash) via an SSL client certificate with
       certain ASN.1 tag values.
    
    CAN-2003-0544:
    
       OpenSSL does not properly track the number of characters in certain
       ASN.1 inputs, which allows remote attackers to cause a denial of
       service (crash) via an SSL client certificate that causes OpenSSL
       to read past the end of a buffer when the long form is used.
    
    CAN-2003-0545:
    
       Double-free vulnerability allows remote attackers to cause a denial
       of service (crash) and possibly execute arbitrary code via an SSL
       client certificate with a certain invalid ASN.1 encoding.  This bug
       was only present in OpenSSL 0.9.7 and is listed here only for
       reference.
    
    For the stable distribution (woody) this problem has been
    fixed in openssl095 version 0.9.5a-6.woody.3.
    
    This package is not present in the unstable (sid) or testing (sarge)
    distribution.
    
    We recommend that you upgrade your libssl095a packages and restart
    services using this library.  Debian doesn't ship any packages that
    are linked against this library.
    
    The following commandline (courtesy of Ray Dassen) produces a list of
    names of running processes that have libssl095 mapped into their
    memory space:
    
        find /proc -name maps -exec egrep -l 'libssl095' {} /dev/null \; \
        | sed -e 's/[^0-9]//g' | xargs --no-run-if-empty ps --no-headers -p | \
        sed -e 's/^\+//' -e 's/ \+/ /g' | cut -d ' ' -f 5 | sort | uniq
    
    You should restart the associated services.
    
    
    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/o/openssl095/openssl095_0.9.5a-6.woody.3.dsc
          Size/MD5 checksum:      631 ba6e597ab2db2984aef6c2a765ac29c0
         http://security.debian.org/pool/updates/main/o/openssl095/openssl095_0.9.5a-6.woody.3.diff.gz
          Size/MD5 checksum:    38851 6b197111a7068a7ea29ef55176771d89
         http://security.debian.org/pool/updates/main/o/openssl095/openssl095_0.9.5a.orig.tar.gz
          Size/MD5 checksum:  1892089 99d22f1d4d23ff8b927f94a9df3997b4
    
      Alpha architecture:
    
         http://security.debian.org/pool/updates/main/o/openssl095/libssl095a_0.9.5a-6.woody.3_alpha.deb
          Size/MD5 checksum:   497152 fe3d6854382f8dbe2d10f3f5700dd8f6
    
      ARM architecture:
    
         http://security.debian.org/pool/updates/main/o/openssl095/libssl095a_0.9.5a-6.woody.3_arm.deb
          Size/MD5 checksum:   402498 551b79fbb80903f174d6edeffd9869df
    
      Intel IA-32 architecture:
    
         http://security.debian.org/pool/updates/main/o/openssl095/libssl095a_0.9.5a-6.woody.3_i386.deb
          Size/MD5 checksum:   399752 2a856ac6b45d41beb0bf78880b236966
    
      Motorola 680x0 architecture:
    
         http://security.debian.org/pool/updates/main/o/openssl095/libssl095a_0.9.5a-6.woody.3_m68k.deb
          Size/MD5 checksum:   376738 980e428e9b913672d939ebe77c18cd6d
    
      Big endian MIPS architecture:
    
         http://security.debian.org/pool/updates/main/o/openssl095/libssl095a_0.9.5a-6.woody.3_mips.deb
          Size/MD5 checksum:   412624 b8c7cc0b4dcbf1cf03480b93c78cd610
    
      Little endian MIPS architecture:
    
         http://security.debian.org/pool/updates/main/o/openssl095/libssl095a_0.9.5a-6.woody.3_mipsel.deb
          Size/MD5 checksum:   407388 de02385580cf33c344c1ffadcf8aed88
    
      PowerPC architecture:
    
         http://security.debian.org/pool/updates/main/o/openssl095/libssl095a_0.9.5a-6.woody.3_powerpc.deb
          Size/MD5 checksum:   425452 c3d04af89c64e6e9f0175e6cd4997058
    
      Sun Sparc architecture:
    
         http://security.debian.org/pool/updates/main/o/openssl095/libssl095a_0.9.5a-6.woody.3_sparc.deb
          Size/MD5 checksum:   412196 ae1181c2873a304c583800459da53e5a
    
    
      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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