[UNIX] HylaFAX Format String Vulnerability (Fixed)
From: SecuriTeam (support_at_securiteam.com)
To: firstname.lastname@example.org Date: 12 Nov 2003 20:24:59 +0200
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HylaFAX Format String Vulnerability (Fixed)
<http://www.hylafax.org> HylaFAX is "a mature (est. 1991)
enterprise-class open source software package for sending and receiving
facsimiles as well as for sending alpha-numeric pages. It runs on a wide
variety of UNIX-like platforms including Linux, BSD (including Mac OS X),
SunOS and Solaris, SCO, IRIX, AIX, and HP-UX".
The SuSE Security Team recently audited the HylaFAX daemon (hfaxd) and
discovered a remotely exploitable format string vulnerability.
A vulnerable host must have set the 0x002 bit for the ServerTracing
configuration parameter. This is not the default setting for the HylaFAX
installation, but it is not an uncommon configuration when troubleshooting
* HylaFAX version 4.1.7 and prior
* HylaFAX version 4.1.8
HylaFAX development has released the 4.1.8 patch-level code release which
includes the fix for this format string vulnerability as contributed by
SuSE. All users are strongly encouraged to upgrade.
HylaFAX 4.1.8 is available by anonymous ftp at:
(Binary versions will shortly be made available)
The fix is available in patch form at:
There is no known exploitation in the wild of this vulnerability.
The information has been provided by <mailto:email@example.com> Lee
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