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CERT Coordination Center


lpd hostname authentication bypassed with spoofed DNS

Vulnerability Note VU#30308

Original Release Date: 2001-10-16 | Last Revised: 2001-11-09

Overview

The line printer daemon enables various clients to share printers over a network. There exists a flaw in the authentication method in this daemon that permits remote access to the server.

Description

A vulnerability exists in the line printer daemon (lpd) shipped with the lpr package for several systems. The authentication method was not thorough enough. If a remote user was able to control their own DNS so that their IP address resolved to the hostname of the print server, access would be granted when it should not be.

Impact

An Intruder can gain unauthorized access to the lpd server. In conjunction with another vulnerability (e.g. VU#39001), an intruder may be able to gain additional privileges.

Solution

Apply the patches provided by your vendor.

Vendor Information

30308
Expand all

Debian

Updated:  October 04, 2001

Status

  Vulnerable

Vendor Statement

http://www.debian.org/security/2000/20000109

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

IBM

Updated:  November 02, 2001

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

RedHat

Updated:  October 04, 2001

Status

  Vulnerable

Vendor Statement

http://www.redhat.com/support/errata/RHSA2000002-01.6.0.html

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Apple

Updated:  November 09, 2001

Status

  Not Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Caldera

Notified:  September 04, 2001 Updated:  November 07, 2001

Status

  Not Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

FreeBSD

Updated:  November 07, 2001

Status

  Not Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Fujitsu

Updated:  October 31, 2001

Status

  Not Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Sun

Updated:  October 30, 2001

Status

  Not Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Compaq Computer Corporation

Updated:  November 05, 2001

Status

  Unknown

Vendor Statement

Compaq has not been able to reproduce the problems identified in this advisory for TRU64 UNIX. We will continue testing and address the LPD issues if a problem is discovered and provide patches as necessary.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A

References

Credit

The CERT/CC would like to thank Red Hat and Debian for the information provided in their security advisories.

This document was written by Jason Rafail.

Other Information

CVE IDs: None
Severity Metric: 7.88
Date Public: 2000-01-08
Date First Published: 2001-10-16
Date Last Updated: 2001-11-09 17:10 UTC
Document Revision: 10

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