Debian: New afuse packages fix privilege escalation
Posted by Benjamin D. Thomas   
Debian Anders Kaseorg discovered that afuse, an automounting file system in user-space, did not properly escape meta characters in paths. This allowed a local attacker with read access to the filesystem to execute commands as the owner of the filesystem.
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Debian Security Advisory DSA-1611-1                  security@debian.org
http://www.debian.org/security/                          Thijs Kinkhorst
July 16, 2008                         http://www.debian.org/security/faq
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Package        : afuse
Vulnerability  : privilege escalation
Problem type   : local
Debian-specific: no
CVE Id(s)      : CVE-2008-2232
Debian Bug     : 490921

Anders Kaseorg discovered that afuse, an automounting file system
in user-space, did not properly escape meta characters in paths.
This allowed a local attacker with read access to the filesystem to
execute commands as the owner of the filesystem.

For the stable distribution (etch), this problem has been fixed in
version 0.1.1-1+etch1.

For the unstable distribution (sid), this problem has been fixed in
version 0.2-3.

We recommend that you upgrade your afuse (0.1.1-1+etch1) package.

Upgrade instructions
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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
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Source archives:

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1.diff.gz
    Size/MD5 checksum:     3699 645246f8f338b76b6d6785fff9997c5a
  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1.dsc
    Size/MD5 checksum:      657 fe408099626f3bad3bc68d2717df2a9b
  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1.orig.tar.gz
    Size/MD5 checksum:    98171 95cce7d6ed8e984d0ff2d650e6beb167

alpha architecture (DEC Alpha)

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_alpha.deb
    Size/MD5 checksum:    15476 465baebb172ecda5ed1e7bdd174fddac

amd64 architecture (AMD x86_64 (AMD64))

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_amd64.deb
    Size/MD5 checksum:    14224 5e5dca72cb191bf0d435f770c62e07f5

arm architecture (ARM)

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_arm.deb
    Size/MD5 checksum:    12448 f39bc75bceec2e8979a514bda07164d6

hppa architecture (HP PA RISC)

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_hppa.deb
    Size/MD5 checksum:    14602 603022ee85f781d0c8c155936d432484

i386 architecture (Intel ia32)

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_i386.deb
    Size/MD5 checksum:    13086 b422ac9cb737dd1fb7827eb6ea222bba

ia64 architecture (Intel ia64)

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_ia64.deb
    Size/MD5 checksum:    17730 9fc41e69a8df1ddee15831b971ededb1

mips architecture (MIPS (Big Endian))

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_mips.deb
    Size/MD5 checksum:    14232 69ebaa63e04dd9a16ad8ff5a772dc576

mipsel architecture (MIPS (Little Endian))

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_mipsel.deb
    Size/MD5 checksum:    14282 9dabd8530851c9588c4927f53cf923d2

powerpc architecture (PowerPC)

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_powerpc.deb
    Size/MD5 checksum:    13582 c6c86e8600353b4ff4ed66c9608fd7d0

s390 architecture (IBM S/390)

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_s390.deb
    Size/MD5 checksum:    14154 b36cc8bab5a28d13430a18697bb4b85c

sparc architecture (Sun SPARC/UltraSPARC)

  http://security.debian.org/pool/updates/main/a/afuse/afuse_0.1.1-1+etch1_sparc.deb
    Size/MD5 checksum:    12562 ff0fd7531cc011d032f74c78ae17ca0e


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

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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@lists.debian.org