Vulnerability Note VU#30308
lpd hostname authentication bypassed with spoofed DNS
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.
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.
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.
Apply the patches provided by your vendor.
Systems Affected (Learn More)
|Vendor||Status||Date Notified||Date Updated|
|Debian||Affected||-||04 Oct 2001|
|IBM||Affected||-||02 Nov 2001|
|RedHat||Affected||-||04 Oct 2001|
|Apple||Not Affected||-||09 Nov 2001|
|Caldera||Not Affected||04 Sep 2001||07 Nov 2001|
|FreeBSD||Not Affected||-||07 Nov 2001|
|Fujitsu||Not Affected||-||31 Oct 2001|
|Sun||Not Affected||-||30 Oct 2001|
|Compaq Computer Corporation||Unknown||-||05 Nov 2001|
CVSS Metrics (Learn More)
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.
- CVE IDs: Unknown
- Date Public: 08 Jan 2000
- Date First Published: 16 Oct 2001
- Date Last Updated: 09 Nov 2001
- Severity Metric: 7.87
- Document Revision: 10
If you have feedback, comments, or additional information about this vulnerability, please send us email.