Linux Security
Linux Security
Linux Security

Debian: xlockmore vulnerability

Date 17 Aug 2000
Posted By LinuxSecurity Advisories
There is a format string bug in all versions of xlockmore/xlockmore-gl.

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Debian Security Advisory                             This email address is being protected from spambots. You need JavaScript enabled to view it.                            Michael Stone
August 16, 2000
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Package: xlockmore, xlockmore-gl
Vulnerability type: local exploit
Debian-specific: no

There is a format string bug in all versions of xlockmore/xlockmore-gl.
Debian 2.1 (slink) installs xlock setgid by default, and this exploit
can be used to gain read access to the shadow file. We recommend
upgrading immediately.

xlockmore is normally installed as an unprivileged program in Debian 2.2
(potato) and is not vulnerable in that configuration. xlockmore may be
setuid/setgid for historical reasons or after upgrading from a previous
Debian release; consult README.Debian in /usr/doc/xlockmore or
/usr/doc/xlockmore-gl for information about xlock privileges and how to
disable them. If your local environment requires xlock to be setgid, or
if in doubt, you should upgrade to a fixed package immediately.

Fixed packages are available in xlockmore/xlockmore-gl 4.12-5 for Debian
2.1 (slink) and xlockmore/xlockmore-gl 4.15-9 for Debian 2.2 (potato). 

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

Debian GNU/Linux 2.1 alias slink
- --------------------------------

  Source archives:
      MD5 checksum: e253bee3472f835e71e23994ead85dcf
      MD5 checksum: acbf3f3310edca9ce20f5d4e720f3227
      MD5 checksum: 110a594d89f3a2758255d0bba0e48217
  Alpha architecture:
      MD5 checksum: d51723c04362213ca6f43d12db479a07
      MD5 checksum: 41878e3ba49152c5049cb9a394a41d14
  Intel ia32 architecture:
      MD5 checksum: 0d5c32ed8a834bb810ba421520f81dea
      MD5 checksum: ca34fd0732d82f2e4d176eb80f828cd8
  Motorola 680x0 architecture:
    will be available shortly
  Sun Sparc architecture:
      MD5 checksum: 3ccfd6b2893e0e183eb1118c75fd57e4
      MD5 checksum: 002d7712d7be3a943e0b88f9263092b2

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

  Source archives:
      MD5 checksum: 02f86bd315558ca32ca5a777d009c85f
      MD5 checksum: 377a392b2f6c711b5252fbfff822ce99
      MD5 checksum: eceda376ee0a336063a46ec018c83d94
  Alpha architecture:
      MD5 checksum: e620c4e0d3f4ecc7167b9f9897cd3971
      MD5 checksum: 15e4be9f504873789c42ce0f283da707
  Arm architecture:
      MD5 checksum: bb0f9cfb7a90f73a870ed529b51ef258
      MD5 checksum: e78be3e33bbc1ee68c01bef39be8997d
  Intel ia32 architecture:
      MD5 checksum: aed3a97f49cd0ea1464cefb6ef94b9ac
      MD5 checksum: 7a8ac4b5725bf3117b029ba31568817f
  Motorola 680x0 architecture:
    Will be available shortly
  PowerPC architecture:
    Will be available shortly
  Sun Sparc architecture:
      MD5 checksum: 3507476bbf9e625c06a4f52ffa81a1e8
      MD5 checksum: 9ce55111c3a93744b62eb5f2d2291511

Version: GnuPG v1.0.2 (GNU/Linux)
Comment: For info see


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