Linux Security
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Linux Security

Debian: 'xtel' Potential symlink attack vulnerability

Date 05 Dec 2001
2747
Posted By LinuxSecurity Advisories
The xtel (a X emulator for minitel) package as distributed with DebianGNU/Linux 2.2 has two possible symlink attacks.

------------------------------------------------------------------------
Debian Security Advisory DSA-090-1                   This email address is being protected from spambots. You need JavaScript enabled to view it. 
https://www.debian.org/security/                         Wichert Akkerman
December  5, 2001
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Package        : xtel
Problem type   : symlink attack
Debian-specific: no

The xtel (a X emulator for minitel) package as distributed with Debian
GNU/Linux 2.2 has two possible symlink attacks:

* xteld creates a temporary file /tmp/.xtel- without checking
  for symlinks.
* when printing a hardcope xtel would create a temporary file without
  protecting itself against symlink attacks.

Both problems have been fixed in version 3.2.1-4.potato.1 .

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.


Debian GNU/Linux 2.2 alias potato
---------------------------------

  Potato was released for alpha, arm, i386, m68k, powerpc and sparc.

  Source archives:
     https://security.debian.org/dists/stable/updates/main/source/xtel_3.2.1-4.potato.1.diff.gz
      MD5 checksum: 79575d2797c4b85fafba690f71ba97c4
     https://security.debian.org/dists/stable/updates/main/source/xtel_3.2.1-4.potato.1.dsc
      MD5 checksum: 036a3763efa51ff74baa14705b86974a
     https://security.debian.org/dists/stable/updates/main/source/xtel_3.2.1.orig.tar.gz
      MD5 checksum: 9cec4556d70194beb25086d8e14b9b20

  Alpha architecture:
     
https://security.debian.org/dists/stable/updates/main/binary-alpha/xtel_3.2.1-4.potato.1_alpha.deb
      MD5 checksum: c288520adc2a519edb341c18d6b20572

  ARM architecture:
     
https://security.debian.org/dists/stable/updates/main/binary-arm/xtel_3.2.1-4.potato.1_arm.deb
      MD5 checksum: 0114570b5bd6973f329e8477e7c25078

  Motorola 680x0 architecture:
     
https://security.debian.org/dists/stable/updates/main/binary-m68k/xtel_3.2.1-4.potato.1_m68k.deb
      MD5 checksum: 46a9883023a1c897ee585b009d72ea92

  Intel IA-32 architecture:
     
https://security.debian.org/dists/stable/updates/main/binary-i386/xtel_3.2.1-4.potato.1_i386.deb
      MD5 checksum: 325874239da03f93d0ff9039336d1231

  PowerPC architecture:
     
https://security.debian.org/dists/stable/updates/main/binary-powerpc/xtel_3.2.1-4.potato.1_powerpc.deb
      MD5 checksum: 0299e89118646ef52579c1de1f56bcdd

  Sun Sparc architecture:
     
https://security.debian.org/dists/stable/updates/main/binary-sparc/xtel_3.2.1-4.potato.1_sparc.deb
      MD5 checksum: 55f0f97fa3dbb4454f2933862333a84c

  These packages will be moved into the stable distribution on its next
  revision.

For not yet released architectures please refer to the appropriate
directory  ftp://ftp.debian.org/debian/dists/sid/binary-$arch/ .

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