Debian: pptpd buffer overflow vulnerability

    Date30 Apr 2003
    CategoryDebian
    2236
    Posted ByLinuxSecurity Advisories
    By specifying a small packet length an attacker is able to overflow a buffer and execute code under the user id that runs pptpd, probably root.
    
    - --------------------------------------------------------------------------
    Debian Security Advisory DSA 295-1                     This email address is being protected from spambots. You need JavaScript enabled to view it. 
    http://www.debian.org/security/                             Martin Schulze
    April 30th, 2003                         http://www.debian.org/security/faq
    - --------------------------------------------------------------------------
    
    Package        : pptpd
    Vulnerability  : buffer overflow
    Problem-Type   : remote
    Debian-specific: no
    CVE Id         : CAN-2003-0213
    
    Timo Sirainen discovered a vulnerability in pptpd, a Point to Point
    Tunneling Server, which implements PPTP-over-IPSEC and is commonly
    used to create Virtual Private Networks (VPN).  By specifying a small
    packet length an attacker is able to overflow a buffer and execute
    code under the user id that runs pptpd, probably root.  An exploit for
    this problem is already circulating.
    
    For the stable distribution (woody) this problem has been fixed in
    version 1.1.2-1.4.
    
    For the old stable distribution (potato) this problem has been
    fixed in version 1.0.0-4.2.
    
    For the unstable distribution (sid) this problem has been fixed in
    version 1.1.4-0.b3.2.
    
    We recommend that you upgrade your pptpd package immediately.
    
    
    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 2.2 alias potato
    - ---------------------------------
    
      Source archives:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2.dsc
          Size/MD5 checksum:      523 21be201580ae34962ecc5a99fb75b094
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2.diff.gz
          Size/MD5 checksum:     8063 dc1cb1b45e4928429a3b5caee0548a7a
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0.orig.tar.gz
          Size/MD5 checksum:   110188 cb8964868809381e33a03cd9fcb153a9
    
      Alpha architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_alpha.deb
          Size/MD5 checksum:    58254 00302aaa28fbfe03fb8785e7a5e3345b
    
      ARM architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_arm.deb
          Size/MD5 checksum:    52924 00df85870b8b7e27e7bd410e35f2e18c
    
      Intel IA-32 architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_i386.deb
          Size/MD5 checksum:    52478 d306cd958d5aaebca28d177fcdf56d34
    
      Motorola 680x0 architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_m68k.deb
          Size/MD5 checksum:    51356 60c4edf7c76d4d6313108ea3d22ba53d
    
      PowerPC architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_powerpc.deb
          Size/MD5 checksum:    52954 8361e9557165b2873dd2d6dfad0effea
    
      Sun Sparc architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.0.0-4.2_sparc.deb
          Size/MD5 checksum:    55118 b3332a86ca1943d6dcd725c515045486
    
    
    Debian GNU/Linux 3.0 alias woody
    - --------------------------------
    
      Source archives:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4.dsc
          Size/MD5 checksum:      562 5c137a9f1469af8f51fed5216d3bc001
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4.diff.gz
          Size/MD5 checksum:     8806 fb9f89a775e36e279f7cadae56e4c50e
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2.orig.tar.gz
          Size/MD5 checksum:   115418 03f7106c6fd7f22bd904b5c66aedbe92
    
      Alpha architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_alpha.deb
          Size/MD5 checksum:    59592 c44b149c21b113eea2e2aa576cb541e1
    
      ARM architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_arm.deb
          Size/MD5 checksum:    55828 1bdf47636d9642af79b36ba45086b223
    
      Intel IA-32 architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_i386.deb
          Size/MD5 checksum:    54988 ecc3dd513b22b1a33090c1370a5ffc99
    
      Intel IA-64 architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_ia64.deb
          Size/MD5 checksum:    65558 63dfd31f6ccd9f9b4557576f735197c0
    
      HP Precision architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_hppa.deb
          Size/MD5 checksum:    57076 d30f9f8b986884c82b7c099fa170cad2
    
      Motorola 680x0 architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_m68k.deb
          Size/MD5 checksum:    53526 4bb6f84135ade8013a6e87a4f4779cd1
    
      Big endian MIPS architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_mips.deb
          Size/MD5 checksum:    56650 7fc77e33ce418329e827e11988029e6b
    
      Little endian MIPS architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_mipsel.deb
          Size/MD5 checksum:    56908 81ed16b0e6211034b7318f21b3e4f846
    
      PowerPC architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_powerpc.deb
          Size/MD5 checksum:    55330 44279f4f9ce99321606ce29d2c38e102
    
      IBM S/390 architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_s390.deb
          Size/MD5 checksum:    56074 ee6b70bc7326baba2fdc77fd32dc02d6
    
      Sun Sparc architecture:
    
         http://security.debian.org/pool/updates/main/p/pptpd/pptpd_1.1.2-1.4_sparc.deb
          Size/MD5 checksum:    60268 f51e1d37e75b40e39afc3c641ebe96ad
    
    
      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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