PFinger Format String Vulnerability

BID:3725

Info

PFinger Format String Vulnerability

Bugtraq ID: 3725
Class: Input Validation Error
CVE:
Remote: Yes
Local: No
Published: Dec 19 2001 12:00AM
Updated: Dec 19 2001 12:00AM
Credit: Discovered by Guillaume Pelat of INTEXXIA and posted to BugTraq in an advisory dated December 18, 2001.
Vulnerable: PFinger PFinger 0.7.7
PFinger PFinger 0.7.6
PFinger PFinger 0.7.5
Not Vulnerable: PFinger PFinger 0.7.8

Discussion

PFinger Format String Vulnerability

PFinger is a daemon for the standard finger protocol. It also includes support for the PIP protocol. The PFinger daemon runs as the 'nobody' user in the default installation. PFinger includes a graphical finger client.

A vulnerability exists in both the server and the client. Finger data associated with a user, including the .plan file, is passed into a printf call as a format string. This may lead to arbitrary code being executed by either the server or the client, and to a non-privileged local account compromise.

Exploit / POC

PFinger 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

PFinger Format String Vulnerability

Solution:
An updated version has been made available:


PFinger PFinger 0.7.5

PFinger PFinger 0.7.6

PFinger PFinger 0.7.7

References

PFinger Format String Vulnerability

References:

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