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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
HylaFAX: hfaxd unauthorized login vulnerability
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200501-21
(HylaFAX: hfaxd unauthorized login vulnerability)
The code used by hfaxd to match a given username and hostname with
an entry in the hosts.hfaxd file is insufficiently protected against
If the HylaFAX installation uses a weak hosts.hfaxd file, a remote
attacker could authenticate using a malicious username or hostname and
bypass the intended access restrictions.
As a workaround, administrators may consider adding passwords to
all entries in the hosts.hfaxd file.
All HylaFAX users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/hylafax-4.2.0-r2"
Note: Due to heightened security, weak entries in the
hosts.hfaxd file may no longer work. Please see the HylaFAX
documentation for details of accepted syntax in the hosts.hfaxd file.
Network Security Threat Level: Medium
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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