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In HylaFAX Enterprise Web Interface and AvantFAX, the language form element is not properly sanitized before being used and can be misused to include an arbitrary file in the PHP code allowing an attacker to do anything as the web server user. This flaw requires the attacker to be authenticated with a valid user account.
HylaFAX 6.0.6 and HylaFAX+ 5.6.0 allow remote attackers to execute arbitrary code via a dial-in session that provides a FAX page with the JPEG bit enabled, which is mishandled in FaxModem::writeECMData() in the faxd/CopyQuality.c++ file.
Multiple eval injection vulnerabilities in HylaFAX 4.2.3 and earlier allow remote attackers to execute arbitrary commands via (1) the notify script in HylaFAX 4.2.0 to 4.2.3 and (2) crafted CallID parameters to the faxrcvd script in HylaFAX 4.2.2 and 4.2.3.
HylaFax 4.2.1 and earlier does not create or verify ownership of the UNIX domain socket, which might allow local users to read faxes and cause a denial of service by creating the socket using the hyla.unix temporary file.
xferfaxstats in HylaFax 4.2.1 and earlier allows local users to overwrite arbitrary files via a symlink attack on the xferfax$$ temporary file.
hfaxd in HylaFAX before 4.2.1, when installed with a "weak" hosts.hfaxd file, allows remote attackers to authenticate and bypass intended access restrictions via a crafted (1) username or (2) hostname that satisfies a regular expression that is matched against a hosts.hfaxd entry without a password.
Format string vulnerability in hfaxd for Hylafax 4.1.7 and earlier allows remote attackers to execute arbitrary code.
Buffer overflow in HylaFAX faxgetty before 4.1.3 allows remote attackers to cause a denial of service, and possibly execute arbitrary code, via a long line of image data.
Format string vulnerability in HylaFAX faxgetty before 4.1.3 allows remote attackers to cause a denial of service (crash) via the TSI data element.
Format string vulnerability in hfaxd in HylaFAX before 4.1.b22 allows local users to gain privileges via the -q command line argument.
Buffer overflow in faxalter in hylafax 4.0.2 allows local users to gain privileges via a long -m command line argument.