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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2007:1020

The remote host is missing updates announced in
advisory RHSA-2007:1020.

The Common UNIX Printing System (CUPS) provides a portable printing layer
for UNIX(R) operating systems.

A flaw was found in the way CUPS handles certain Internet Printing Protocol
(IPP) tags. A remote attacker who is able to connect to the IPP TCP port
could send a malicious request causing the CUPS daemon to crash, or
potentially execute arbitrary code. Please note that the default CUPS
configuration does not allow remote hosts to connect to the IPP TCP port.

Red Hat would like to thank Alin Rad Pop for reporting this issue.

All CUPS users are advised to upgrade to these updated packages, which
contain a backported patch to resolve this issue.

In addition, the following bugs were fixed:

* the CUPS service has been changed to start after sshd, to avoid causing
delays when logging in when the system is booted.

* the logrotate settings have been adjusted so they do not cause CUPS to
reload its configuration. This is to avoid re-printing the current job,
which could occur when it was a long-running job.

* a bug has been fixed in the handling of the If-Modified-Since: HTTP

* in the LSPP configuration, labels for labeled jobs did not line-wrap.
This has been fixed.

* an access check in the LSPP configuration has been made more secure.

* the cups-lpd service no longer ignores the -odocument-format=...

* a memory allocation bug has been fixed in cupsd.

* support for UNIX domain sockets authentication without passwords has been

* in the LSPP configuration, a problem that could lead to cupsd crashing
has been fixed.

* the error handling in the initscript has been improved.

* The job-originating-host-name attribute was not correctly set for jobs
submitted via the cups-lpd service. This has been fixed.

* a problem with parsing IPv6 addresses in the configuration file has been

* a problem that could lead to cupsd crashing when it failed to open a
file: URI has been fixed.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

Risk factor : Critical

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2007-4351
BugTraq ID: 26268
Cert/CC Advisory: TA07-352A
CERT/CC vulnerability note: VU#446897
Cisco Security Advisory: 20080625 Wide Area Application Services (WAAS) Common UNIX Printing System (CUPS) Vulnerability
Debian Security Information: DSA-1407 (Google Search)
SuSE Security Announcement: SUSE-SA:2007:058 (Google Search)
XForce ISS Database: cups-ippreadio-bo(38190)
CopyrightCopyright (c) 2007 E-Soft Inc.

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