File: Denial of Service
1.
Gentoo Linux Security Advisory
Version Information
Advisory Reference |
GLSA 200704-13 / file |
Release Date |
April 17, 2007 |
Latest Revision |
September 17, 2007: 02 |
Impact |
normal |
Exploitable |
remote |
Package |
Vulnerable versions |
Unaffected versions |
Architecture(s) |
sys-apps/file |
=
4.21 |
>=
4.21-r1 |
Intel compatible
|
Related bugreports:
#174217
Synopsis
A vulnerability has been discovered in file allowing for a denial of
service.
2.
Impact Information
Background
file is a utility that identifies a file format by scanning binary data
for patterns.
Description
Conor Edberg discovered an error in the way file processes a specific
regular expression.
Impact
A remote attacker could entice a user to open a specially crafted file,
using excessive CPU ressources and possibly leading to a Denial of
Service. Note that this vulnerability could be also triggered through
an automatic file scanner like amavisd-new.
3.
Resolution Information
Workaround
There is no known workaround at this time.
Resolution
All file users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/file-4.20-r1"
|
4.
References
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