Linux Security
Linux Security
Linux Security

Debian: New reprepro packages fix authentication bypass

Date 23 Oct 2007
4391
Posted By LinuxSecurity Advisories
It was discovered that reprepro, a tool to create a repository of Debian packages, when updating from a remote site only checks for the validity of known signatures, and thus does not reject packages with only unknown signatures. This allows an attacker to bypass this authentication mechanism
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Debian Security Advisory DSA 1394-1                    This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                            Thijs Kinkhorst
October 23rd, 2007                      https://www.debian.org/security/faq
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Package        : reprepro
Vulnerability  : authentication bypass
Problem-Type   : remote
Debian-specific: yes
CVE ID         : CVE-2007-4739
Debian Bug     : 440535

It was discovered that reprepro, a tool to create a repository of Debian
packages, when updating from a remote site only checks for the validity of
known signatures, and thus does not reject packages with only unknown
signatures. This allows an attacker to bypass this authentication
mechanism.

The oldstable distribution (sarge) is not affected by this problem.

For the stable distribution (etch) this problem has been fixed in
version 1.3.1+1-1.

For the unstable distribution (sid) this problem has been fixed in
version 2.2.4-1.

We recommend that you upgrade your reprepro 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 4.0 alias etch
- -------------------------------

  Source archives:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1.dsc
      Size/MD5 checksum:      934 a9e32d707c054a2835e49b11d84abe79
    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1.diff.gz
      Size/MD5 checksum:     6837 478f94313599732c8f8defa8ec7c2e60
    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1.orig.tar.gz
      Size/MD5 checksum:   294938 8f171568b73b258bcf2e83a424c741c6

  Alpha architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_alpha.deb
      Size/MD5 checksum:   233240 cd1298547400c3dcdbae69213c7a116d

  AMD64 architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_amd64.deb
      Size/MD5 checksum:   219738 4e0e51365740d3a9d7c2262c58c51ad9

  ARM architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_arm.deb
      Size/MD5 checksum:   200764 2713c4a6f8160eff1df1aacb9c73a037

  HP Precision architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_hppa.deb
      Size/MD5 checksum:   222708 e21a90fb3e6461fb3bcd35f7e940aaea

  Intel IA-32 architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_i386.deb
      Size/MD5 checksum:   207614 e7d5520eeccc12e4fe3269fad2dfc114

  Intel IA-64 architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_ia64.deb
      Size/MD5 checksum:   305744 372b85433ec8ffee768645cf017b8493

  Big endian MIPS architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_mips.deb
      Size/MD5 checksum:   215216 2d0a2442cbdd5a11413545e7aecf3ba0

  Little endian MIPS architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_mipsel.deb
      Size/MD5 checksum:   216124 fea785909c963b3ed18e6f15e51bda23

  PowerPC architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_powerpc.deb
      Size/MD5 checksum:   214286 4bafb8847d749ed05a0b9195db582cf7

  IBM S/390 architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_s390.deb
      Size/MD5 checksum:   214650 fa8bcb55f53290e2be693b29f6a28e33

  Sun Sparc architecture:

    https://security.debian.org/pool/updates/main/r/reprepro/reprepro_1.3.1+1-1_sparc.deb
      Size/MD5 checksum:   200260 d2ffde092084998af9cd887d5e06c12b


  These files will probably be moved into the stable distribution on
  its next update.

- ---------------------------------------------------------------------------------
For apt-get: deb https://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
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