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Debian Security Advisory DSA 146-2                     security@debian.org

http://www.debian.org/security/                             Martin Schulze

August 8th, 2002   

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Package        : dietlibc

Vulnerability  : integer overflow

Problem-Type   : remote

Debian-specific: no

CVE Id         : CAN-2002-0391

CERT advisory  : VU#192995



The upstream author of dietlibc, Felix von Leitner, discovered a

potential division by zero chance in the fwrite and calloc integer

overflow checks, which are fixed in the version below.



The new version includes fixes from DSA 146-1.  For completness we

enclose the text of the other advisory:



    An integer overflow bug has been discovered in the RPC library

    used by dietlibc, a libc optimized for small size, which is

    derived from the SunRPC library.  This bug could be exploited to

    gain unauthorized root access to software linking to this code.

    The packages below also fix integer overflows in the calloc, fread

    and fwrite code.  They are also more strict regarding hostile DNS

    packets that could lead to a vulnerability otherwise.



This problem has been fixed in version 0.12-2.4 for the current stable

distribution (woody) and in version 0.20-0cvs20020808 for the unstable

distribution (sid).  Debian 2.2 (potato) is not affected since it

doesn't contain dietlibc packages.



We recommend that you upgrade your dietlibc packages immediately.



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

--------------------------------



The dietlibc packages are only available for the following

architectures: alpha arm i386 mips mipsel powerpc sparc



  Source archives:



    dietlibc_0.12-2.4.dsc
      Size/MD5 checksum:      581 5b35d65f52bad60c25ed4fc38171a13a

    dietlibc_0.12-2.4.diff.gz
      Size/MD5 checksum:     7943 dc4943d8ad22321ce57a2c8109e16eee

    dietlibc_0.12.orig.tar.gz
      Size/MD5 checksum:   415823 1b9019cc4e717470603d2716a602ec51



  Architecture independent components:



    dietlibc-doc_0.12-2.4_all.deb
      Size/MD5 checksum:    18956 8677ee59b39720edb9860bed12926ac7



  Alpha architecture:



    dietlibc-dev_0.12-2.4_alpha.deb
      Size/MD5 checksum:   264232 be91b0b9c13396a26c29b44d8aee4cc7



  ARM architecture:



    dietlibc-dev_0.12-2.4_arm.deb
      Size/MD5 checksum:   239160 3e1b0b54441a9d05d4b4f18f7bed5daf



  Intel IA-32 architecture:



    dietlibc-dev_0.12-2.4_i386.deb
      Size/MD5 checksum:   230704 705f8d03822326256e8e11e4b49b4398



  Big endian MIPS architecture:



    dietlibc-dev_0.12-2.4_mips.deb
      Size/MD5 checksum:   252890 d962f7770928ba2acef49da1bd085850



  Little endian MIPS architecture:



    dietlibc-dev_0.12-2.4_mipsel.deb
      Size/MD5 checksum:   251724 d85e74c9bbf7355d68d776fdc3cecf9e



  PowerPC architecture:



    dietlibc-dev_0.12-2.4_powerpc.deb
      Size/MD5 checksum:   246014 969782849549a59b0cc746bdb1482b5f



  Sun Sparc architecture:



    dietlibc-dev_0.12-2.4_sparc.deb
      Size/MD5 checksum:   239082 5d2e235422c3fa8a8b8621997ae685e3





  These files will probably be moved into the stable distribution on

  its next revision.



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For apt-get: deb http://security.debian.org/ stable/updates main

For dpkg-ftp: ftp://security.debian.org/debian-securitydists/stable/updates/main

Mailing list: debian-security-announce@lists.debian.org

Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>



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