CUPS: Denial of service vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200409-25 / CUPS
Release Date	September 20, 2004
Latest Revision	September 21, 2004: 02
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-print/cups	< 1.1.20-r2	>= 1.1.20-r2	All supported architectures

Related bugreports: #64168

Synopsis

A vulnerability in CUPS allows remote attackers to cause a denial of service when sending a carefully-crafted UDP packet to the IPP port.

2. Impact Information

Background

The Common UNIX Printing System (CUPS) is a cross-platform print spooler.

Description

Alvaro Martinez Echevarria discovered a hole in the CUPS Internet Printing Protocol (IPP) implementation that allows remote attackers to cause CUPS to stop listening on the IPP port.

Impact

A remote user with malicious intent can easily cause a denial of service to the CUPS daemon by sending a specially-crafted UDP datagram packet to the IPP port.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All CUPS users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge sync
# emerge -pv ">=net-print/cups-1.1.20-r2"
# emerge ">=net-print/cups-1.1.20-r2"

4. References

Page updated September 20, 2004

Summary: This is a Gentoo Linux Security Advisory

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