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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Detailed Explanation for this Vulnerability Assessment
Patrice Fournier discovered a vulnerability in the authorisation
subsystem of hylafax, a flexible client/server fax system. A local or
remote user guessing the contents of the hosts.hfaxd database could
gain unauthorised access to the fax system.
Some installations of hylafax may actually utilise the weak hostname
and username validation for authorized uses. For example, hosts.hfaxd
entries that may be common are
After updating, these entries will need to be modified in order to
continue to function. Respectively, the correct entries should be
Unless such matching of "username" with "otherusername" and "host" with
"hostname" is desired, the proper form of these entries should include
the delimiter and markers like this
For the stable distribution (woody) this problem has been fixed in
For the unstable distribution (sid) this problem has been fixed in
We recommend that you upgrade your hylafax packages.
Solution : http://www.debian.org/security/2005/dsa-634
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: This script is (C) 2005 Michel Arboi
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