HylaFAX: Multiple vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200601-03 / hylafax
Release Date	January 06, 2006
Latest Revision	January 06, 2006: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-misc/hylafax	< 4.2.3-r1	>= 4.2.3-r1	All supported architectures

Related bugreports: #116389

Synopsis

HylaFAX is vulnerable to arbitrary code execution and unauthorized access vulnerabilities.

2. Impact Information

Background

HylaFAX is an enterprise-class system for sending and receiving facsimile messages and for sending alpha-numeric pages.

Description

Patrice Fournier discovered that HylaFAX runs the notify script on untrusted user input. Furthermore, users can log in without a password when HylaFAX is installed with the pam USE-flag disabled.

Impact

An attacker could exploit the input validation vulnerability to run arbitrary code as the user running HylaFAX, which is usually uucp. The password vulnerability could be exploited to log in without proper user credentials.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All HylaFAX users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/hylafax-4.2.3-r1"

4. References

Page updated January 06, 2006

Summary: This is a Gentoo Linux Security Advisory

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