Title: Hylafax Hostname Format String Vulnerability
Severity: MODERATE
Description:
Hylafax is a software package designed to handle the transmission of faxes.
A problem in the Hylafax software may allow local users to gain elevated privileges under some circumstances. This could also lead to further system compromise, and potentially administrative access.
The problem is in the hostname handling code of the '-h' option provided by some Hylafax programs. Hylafax does not sufficiently check or sanitize input from users entering a hostname with some programs. Therefore, it's possible to pass a format string to the program, which could be used to execute arbitrary code.
The problem is known to affect the faxrm and faxalter programs. It is believed that this vulnerability may lie in code shared by both utilities.
This problem is not present in most implementations, as Hylafax is typically installed without setuid privileges. However, it is implemented as a setuid uucp program on some systems, which makes it possible to gain local privilege elevation
Affected Products:
- Debian Linux 3.0.0
- Debian Linux 3.0.0 alpha
- Debian Linux 3.0.0 arm
- Debian Linux 3.0.0 hppa
- Debian Linux 3.0.0 ia-32
- Debian Linux 3.0.0 ia-64
- Debian Linux 3.0.0 m68k
- Debian Linux 3.0.0 mips
- Debian Linux 3.0.0 mipsel
- Debian Linux 3.0.0 ppc
- Debian Linux 3.0.0 s/390
- Debian Linux 3.0.0 sparc
- Hylafax Hylafax 4.1.0
- Hylafax Hylafax 4.1.1
- Hylafax Hylafax 4.1.2
- MandrakeSoft Corporate Server 1.0.1
- MandrakeSoft Linux Mandrake 7.1.0
- MandrakeSoft Linux Mandrake 7.2.0
- MandrakeSoft Linux Mandrake 8.0.0
- MandrakeSoft Linux Mandrake 8.0.0 ppc
- MandrakeSoft Linux Mandrake 8.1.0
- MandrakeSoft Linux Mandrake 8.1.0 ia64
- MandrakeSoft Linux Mandrake 8.2.0
- MandrakeSoft Linux Mandrake 8.2.0 ppc
- S.u.S.E. Linux 7.3.0
- S.u.S.E. Linux 7.3.0 i386
- S.u.S.E. Linux 7.3.0 ppc
- S.u.S.E. Linux 7.3.0 sparc
- S.u.S.E. Linux 8.0.0
- S.u.S.E. Linux 8.0.0 i386
References:
- Hylafax: Hylafax Homepage
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