HylaFAX is subject to a vulnerability in its username matching code, potentially allowing remote users to bypass access control lists.
|Package||net-misc/hylafax on all architectures|
|Affected versions||< 4.2.0-r2|
|Unaffected versions||>= 4.2.0-r2|
HylaFAX is a software package for sending and receiving facsimile messages.
The code used by hfaxd to match a given username and hostname with an entry in the hosts.hfaxd file is insufficiently protected against malicious entries.
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.
January 11, 2005
January 11, 2005: 01