Hylafax hfaxd Local Format String Vulnerability

BID:2574

Info

Hylafax hfaxd Local Format String Vulnerability

Bugtraq ID: 2574
Class: Input Validation Error
CVE:
Remote: No
Local: Yes
Published: Apr 12 2001 12:00AM
Updated: Apr 12 2001 12:00AM
Credit: Discovered by Marcin Dawcewicz <[email protected]> and posted to Bugtraq on April 12, 2001.
Vulnerable: Hylafax Hylafax 4.1 -beta3
Hylafax Hylafax 4.1 -beta2
+ SuSE Linux 7.2 i386
 + SuSE Linux 7.2
+ SuSE Linux 7.1 x86
 + SuSE Linux 7.1 sparc
 + SuSE Linux 7.1 ppc
 + SuSE Linux 7.1 alpha
 + SuSE Linux 7.1
+ SuSE Linux 7.0 sparc
 + SuSE Linux 7.0 ppc
 + SuSE Linux 7.0 i386
 + SuSE Linux 7.0 alpha
 + SuSE Linux 7.0
Hylafax Hylafax 4.1 -beta1
Hylafax Hylafax 4.0 pl2
Hylafax Hylafax 4.0 pl1
Hylafax Hylafax 4.0 pl0
Not Vulnerable:

Discussion

Hylafax hfaxd Local Format String Vulnerability

HylaFAX is a telecommunication system for UNIX systems. HylaFAX includes a server that can recieve requests to send facsimile's from authorized hosts over a network.

The server binary, hfaxd, is installed setuid root by default and executable by everyone. 'hfaxd' contains a likely exploitable format string vulnerability involving the use of syslog().

Since 'hfaxd' is installed setuid root and executable by everybody, successful exploitation would provide root access to an attacker.

Exploit / POC

Hylafax hfaxd Local Format String Vulnerability

Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

Hylafax hfaxd Local Format String Vulnerability

Solution:
The vendor has released a patch that will eliminate this vulnerability.

S.u.S.E. has released an advisory and patched upgrades.

FreeBSD has released an advisory and patched upgrades for i386 versions of FreeBSD.


Hylafax Hylafax 4.0 pl2

Hylafax Hylafax 4.0 pl0

Hylafax Hylafax 4.0 pl1

Hylafax Hylafax 4.1 -beta2

Hylafax Hylafax 4.1 -beta1

Hylafax Hylafax 4.1 -beta3

References

Hylafax hfaxd Local Format String Vulnerability

References:

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