Multiple Vendor PCNFSD Remote Command Execution Vulnerability

BID:5378

Info

Multiple Vendor PCNFSD Remote Command Execution Vulnerability

Bugtraq ID: 5378
Class: Input Validation Error
CVE: CVE-1999-0078
Remote: Yes
Local: No
Published: Apr 18 1996 12:00AM
Updated: Jul 11 2009 02:56PM
Credit: Credit is given to Josh Daymont, Ben G., and Alfred H. of Avalon Security Research.
Vulnerable: Sun SunOS 4.1.4
Sun SunOS 4.1.3
Sun SunOS 4.1.2
Sun SunOS 4.1.1
Sun SunOS 4.1
Sun Solaris 2.5_x86
Sun Solaris 2.5
Sun Solaris 2.4_x86
Sun Solaris 2.4
SGI IRIX 6.5.16
SGI IRIX 6.5.15
SGI IRIX 6.5.14
SGI IRIX 6.5.13
SGI IRIX 6.5.12
SGI IRIX 6.5.11
SGI IRIX 6.5.10
SGI IRIX 6.5.9
SGI IRIX 6.5.8
SGI IRIX 6.5.7
SGI IRIX 6.5.6
SGI IRIX 6.5.5
SGI IRIX 6.5.4
SGI IRIX 6.5.3
SGI IRIX 6.5.2
SGI IRIX 6.5.1
SGI IRIX 6.5
SCO Unixware 2.1
SCO Unixware 2.0.3
SCO Unixware 2.0
SCO Open Server 5.0
IBM AIX 4.2
IBM AIX 4.1
IBM AIX 4.0
IBM AIX 3.2
HP HP-UX 11.0
HP HP-UX 10.20
HP HP-UX 10.10
HP HP-UX 10.1 0
BSDI BSD/OS 2.1
Not Vulnerable:

Discussion

Multiple Vendor PCNFSD Remote Command Execution Vulnerability

pcnfsd, also known as rpc.pcnfsd, is a daemon able to handle authentication and printing over the network. It is available for a wide range of Unix based operating systems.

A vulnerability in some versions of pcnfsd may allow a remote attacker to execute arbitrary commands as the server process. An attacker able to exploit this vulnerability may gain local access to the vulnerable system. pcnfsd normally runs with root privileges.

Exploit / POC

Multiple Vendor PCNFSD Remote Command Execution Vulnerability

Currently we 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

Multiple Vendor PCNFSD Remote Command Execution Vulnerability

Solution:
SGI has advised that administrators uninstall the pcnfsd package from IRIX systems. SGI no longer supports the pcnfs package. An updated version has, however, been made available by the SGI Freeware volunteer team:

http://freeware.sgi.com/index-by-alpha.html

Some vendor fixes are available. Details are available in the referenced CERT advisory CA-1996-08.

References

Multiple Vendor PCNFSD Remote Command Execution Vulnerability

References:

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