Debian: New ppp packages fix privilege escalation

    Date09 Jul 2006
    CategoryDebian
    4616
    Posted ByLinuxSecurity Advisories
    Marcus Meissner discovered that the winbind plugin in pppd does not check whether a setuid() call has been successful when trying to drop privileges, which may fail with some PAM configurations.

    - --------------------------------------------------------------------------
    Debian Security Advisory DSA 1106-1                    This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                             Martin Schulze
    July 10th, 2006                         http://www.debian.org/security/faq
    - --------------------------------------------------------------------------
    
    Package        : ppp
    Vulnerability  : programming error
    Problem type   : local
    Debian-specific: no
    CVE ID         : CVE-2006-2194
    
    Marcus Meissner discovered that the winbind plugin in pppd does not
    check whether a setuid() call has been successful when trying to drop
    privileges, which may fail with some PAM configurations.
    
    The old stable distribution (woody) is not affected by this problem.
    
    For the stable distribution (sarge) this problem has been fixed in
    version 2.4.3-20050321+2sarge1.
    
    For the unstable distribution (sid) this problem has been fixed in
    version 2.4.4rel-1.
    
    We recommend that you upgrade your ppp 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 at the end of this advisory:
    
    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 3.1 alias sarge
    - --------------------------------
    
      Source archives:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1.dsc
          Size/MD5 checksum:      633 1b8f1f8da7cf7b56c2c6e13e2072167d
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1.diff.gz
          Size/MD5 checksum:    83359 1fd6996f800c3d323b159ca5ab587712
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3.orig.tar.gz
          Size/MD5 checksum:   697459 0537b03fb51cbb847290abdbb765cb93
    
      Architecture independent components:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp-dev_2.4.3-20050321+2sarge1_all.deb
          Size/MD5 checksum:    32072 77bab82e596987e60908f19c27bceeb6
    
      Alpha architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_alpha.deb
          Size/MD5 checksum:   393308 5f90be499af49912e7074c26979037db
    
      AMD64 architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_amd64.deb
          Size/MD5 checksum:   346172 ae546c9f5f4f0bc2fdebab8858c93731
    
      ARM architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_arm.deb
          Size/MD5 checksum:   326134 aab781148123790027eb4bf114cc8df9
    
      Intel IA-32 architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_i386.deb
          Size/MD5 checksum:   324274 759537119b8680ed4e27ae09a52a65aa
    
      Intel IA-64 architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_ia64.deb
          Size/MD5 checksum:   437432 8a0acb4779046622af9c27a6307fa305
    
      HP Precision architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_hppa.deb
          Size/MD5 checksum:   357572 5c415d1e9a6e31fdb01b2eb7f8f1065f
    
      Motorola 680x0 architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_m68k.deb
          Size/MD5 checksum:   305432 4e7f194f247899a3d20280eca53e41ba
    
      Big endian MIPS architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_mips.deb
          Size/MD5 checksum:   348852 aca3c70a1be8c013a48e6d939ebe036a
    
      Little endian MIPS architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_mipsel.deb
          Size/MD5 checksum:   351084 7cd743087a4155ff0d9e8085cbee7dbf
    
      PowerPC architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_powerpc.deb
          Size/MD5 checksum:   351188 60f69689787965812f891df34371600a
    
      IBM S/390 architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_s390.deb
          Size/MD5 checksum:   343302 65648a90f1ab9abb71121ceeb9bb98a5
    
      Sun Sparc architecture:
    
        http://security.debian.org/pool/updates/main/p/ppp/ppp_2.4.3-20050321+2sarge1_sparc.deb
          Size/MD5 checksum:   329684 1df0e5a6621da5344bdb91a1fd4eef3e
    
    
      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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