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UNIRAS Brief - 716/06 - Debian Security Advisory: DSA 1205-1 - New thttpd packages fix insecure temporary file creation



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______________________________________________________________________________

 UNIRAS (UK Government CERT) Briefing - 716/06 dated 06.11.06 time 14:55
 UNIRAS is part of NISCC (the UK National Infrastructure Security
 Co-ordination Centre)
______________________________________________________________________________

 UNIRAS material is available from the NISCC website at www.niscc.gov.uk
______________________________________________________________________________

Title
=====

Debian Security Advisory: DSA 1205-1 -  New thttpd packages fix insecure 
temporary file creation

Detail
======

Marco d'Itri discovered that thttpd, a small, fast and secure webserver,
makes use of insecure temporary files when its logfiles are rotated,
which might lead to a denial of service through a symlink attack.


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- - --------------------------------------------------------------------------
Debian Security Advisory DSA 1205-1                    security@xxxxxxxxxx
http://www.debian.org/security/                                 Steve Kemp
November 2rd, 2006                      http://www.debian.org/security/faq
- - --------------------------------------------------------------------------

Package        : thttpd
Vulnerability  : insecure temporary files
Problem-Type   : local
Debian-specific: yes
CVE ID         : CVE-2006-4248
Debian Bug     : 396277


Marco d'Itri discovered that thttpd, a small, fast and secure webserver,
makes use of insecure temporary files when its logfiles are rotated,
which might lead to a denial of service through a symlink attack.

For the stable distribution (sarge) this problem has been fixed in
version 2.23beta1-3sarge2

For the unstable distribution (sid) this problem has been fixed in
version 2.23beta1-5

We recommend that you upgrade your thttpd 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 3.1 alias sarge
- - - --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge2.dsc
      Size/MD5 checksum:      614 0f9a3730f341fa0151596a3b9f20764d
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge2.diff.gz
      Size/MD5 checksum:    14313 8545dd3d0f7a2083ecca36e53e72bd6b
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1.orig.tar.gz
      Size/MD5 checksum:   128712 d3d91f6596f53d5e2b27cea8607d5bba

  Alpha architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_alpha.deb
      Size/MD5 checksum:    59240 f6854853b290fe2ce1a925cbbea3856a
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_alpha.deb
      Size/MD5 checksum:    27978 6b4680363644b459e0e47222985f749f

  AMD64 architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_amd64.deb
      Size/MD5 checksum:    56034 9848065d7700f2f6e0a036ee76e8fcf7
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_amd64.deb
      Size/MD5 checksum:    26456 befb78e032aa654e5fcfcc7c9fdff21b

  ARM architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_arm.deb
      Size/MD5 checksum:    53198 6a9c1e8afaa60a7b4b7787729dd97b9b
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_arm.deb
      Size/MD5 checksum:    24610 f35f8b0a749694fea536296d2a41e1f0

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_hppa.deb
      Size/MD5 checksum:    57374 4755b42efc9a48b59b1e745862e01098
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_hppa.deb
      Size/MD5 checksum:    26912 557472d5a3e182b86999baa0b89846ba

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge2_i386.deb
      Size/MD5 checksum:    51180 991b1072ebd903b6a9ee316b1bfdc8c6
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge2_i386.deb
      Size/MD5 checksum:    24776 fd3dddb60d160a6245da4c7efd5dcfe4

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_ia64.deb
      Size/MD5 checksum:    71954 924db7bf3beb5ce3c0e5018759aef3d6
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_ia64.deb
      Size/MD5 checksum:    30276 530abc02e3c392a91bff06fe1d8ce7af

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_m68k.deb
      Size/MD5 checksum:    50132 bcb24b62afb868c5e04b8c1db66e6cc3
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_m68k.deb
      Size/MD5 checksum:    24756 4b30d87639b3d6b7ca58537cf16c6953

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_mips.deb
      Size/MD5 checksum:    57044 410e480e061a3876b7ff01beaffb571e
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_mips.deb
      Size/MD5 checksum:    30980 2cda342ba6a04fdbe0a938359eeff813

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_mipsel.deb
      Size/MD5 checksum:    57112 fe0268048af2940619a9380d7cd83626
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_mipsel.deb
      Size/MD5 checksum:    31126 64e73613ca88afa3fd379b657c80a414

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_powerpc.deb
      Size/MD5 checksum:    53442 58c39568158a4c3da81efcaf6a0ab838
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_powerpc.deb
      Size/MD5 checksum:    25160 a5ff28da9df6080438012db8014b0212

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_s390.deb
      Size/MD5 checksum:    56214 f39998665c2df9236d2902120eb977f9
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_s390.deb
      Size/MD5 checksum:    26268 34e822b698803e3e0139430aea707f55

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/t/thttpd/thttpd_2.23beta1-3sarge1_sparc.deb
      Size/MD5 checksum:    53298 a8dcaf92cb41b607618b4a271927c250
    http://security.debian.org/pool/updates/main/t/thttpd/thttpd-util_2.23beta1-3sarge1_sparc.deb
      Size/MD5 checksum:    24718 54c4e9dac68c9b8472dc92fe6966f6e4

  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
Mailing list: debian-security-announce@xxxxxxxxxxxxxxxx
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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______________________________________________________________________________

UNIRAS wishes to acknowledge the contributions of Debian for the
information contained in this briefing.
______________________________________________________________________________

This notice contains information released by the original author.
Some of the information may have changed since it was released. If the
vulnerability affects you, it may be prudent to retrieve the advisory
from the site of the original source to ensure that you receive the most
current information concerning that problem.

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______________________________________________________________________________

<End of UNIRAS Briefing>

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