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Red Hat Security Advisory

Synopsis: Updated Perl packages fix security issues.
Advisory ID: RHSA-2003:256-01
Issue date: 2003-09-22
Updated on: 2003-09-22
Product: Red Hat Linux
Keywords: Safe.pm CGI.pm
Cross references:
Obsoletes: RHBA-2002:023
CVE Names: CAN-2002-1323 CAN-2003-0615
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1. Topic:

Updated Perl packages that fix a security issue in Safe.pm and a cross-site
scripting (XSS) vulnerability in CGI.pm are now available.

2. Relevant releases/architectures:

Red Hat Linux 7.1 - i386
Red Hat Linux 7.1 for iSeries (64 bit) - ppc
Red Hat Linux 7.1 for pSeries (64 bit) - ppc
Red Hat Linux 7.2 - i386, ia64
Red Hat Linux 7.3 - i386
Red Hat Linux 8.0 - i386
Red Hat Linux 9 - i386

3. Problem description:

Perl is a high-level programming language commonly used for system
administration utilities and Web programming.

Two security issues have been found in Perl that affect the Perl packages
shipped with Red Hat Linux:

When safe.pm versions 2.0.7 and earlier are used with Perl 5.8.0 and
earlier, it is possible for an attacker to break out of safe compartments
within Safe::reval and Safe::rdo by using a redefined @_ variable. This is
due to the fact that the redefined @_ variable is not reset between
successive calls. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2002-1323 to this issue. NOTE:
This issue does not affect the Perl packages which shipped with Red Hat
Linux 9.

A cross-site scripting vulnerability was discovered in the start_form()
function of CGI.pm. The vulnerability allows a remote attacker to insert a
Web script via a URL fed into the form's action parameter. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CAN-2003-0615 to this issue.

Users of Perl are advised to upgrade to the packages contained within this
erratum. For Red Hat Linux 7.1, 7.2, and 7.3, Perl version 5.6.1 contains
backported security patches addressing these issues. For Red Hat Linux 8.0
and 9, Perl version 5.8.0 is supplied, which is not vulnerable to issue
CAN-2003-1323 and which contains a backported security patch addressing
issue CAN-2003-0615.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

If up2date fails to connect to Red Hat Network due to SSL Certificate
Errors, you need to install a version of the up2date client with an updated
certificate. The latest version of up2date is available from the Red Hat
FTP site and may also be downloaded directly from the RHN website:

https://rhn.redhat.com//latest-up2date.pxt

5. RPMs required:

Red Hat Linux 7.1:

SRPMS:
ftp://updates.redhat.com/7.1/en/os/S...6.1.71.src.rpm

i386:
ftp://updates.redhat.com/7.1/en/os/i....1.71.i386.rpm
ftp://updates.redhat.com/7.1/en/os/i....1.71.i386.rpm
ftp://updates.redhat.com/7.1/en/os/i....1.71.i386.rpm
ftp://updates.redhat.com/7.1/en/os/i....1.71.i386.rpm
ftp://updates.redhat.com/7.1/en/os/i....1.71.i386.rpm
ftp://updates.redhat.com/7.1/en/os/i....1.71.i386.rpm

Red Hat Linux 7.1 for iSeries (64 bit):

SRPMS:
ftp://updates.redhat.com/7.1/en/os/i...6.1.71.src.rpm

ppc:
ftp://updates.redhat.com/7.1/en/os/i...6.1.71.ppc.rpm
ftp://updates.redhat.com/7.1/en/os/i...6.1.71.ppc.rpm
ftp://updates.redhat.com/7.1/en/os/i...6.1.71.ppc.rpm
ftp://updates.redhat.com/7.1/en/os/i...6.1.71.ppc.rpm
ftp://updates.redhat.com/7.1/en/os/i...6.1.71.ppc.rpm
ftp://updates.redhat.com/7.1/en/os/i...6.1.71.ppc.rpm

Red Hat Linux 7.1 for pSeries (64 bit):

SRPMS:
ftp://updates.redhat.com/7.1/en/os/p...6.1.71.src.rpm

ppc:
ftp://updates.redhat.com/7.1/en/os/p...6.1.71.ppc.rpm
ftp://updates.redhat.com/7.1/en/os/p...6.1.71.ppc.rpm
ftp://updates.redhat.com/7.1/en/os/p...6.1.71.ppc.rpm
ftp://updates.redhat.com/7.1/en/os/p...6.1.71.ppc.rpm
ftp://updates.redhat.com/7.1/en/os/p...6.1.71.ppc.rpm
ftp://updates.redhat.com/7.1/en/os/p...6.1.71.ppc.rpm

Red Hat Linux 7.2:

SRPMS:
ftp://updates.redhat.com/7.2/en/os/S...6.1.72.src.rpm

i386:
ftp://updates.redhat.com/7.2/en/os/i....1.72.i386.rpm
ftp://updates.redhat.com/7.2/en/os/i....1.72.i386.rpm
ftp://updates.redhat.com/7.2/en/os/i....1.72.i386.rpm
ftp://updates.redhat.com/7.2/en/os/i....1.72.i386.rpm
ftp://updates.redhat.com/7.2/en/os/i....1.72.i386.rpm
ftp://updates.redhat.com/7.2/en/os/i....1.72.i386.rpm

ia64:
ftp://updates.redhat.com/7.2/en/os/i....1.72.ia64.rpm
ftp://updates.redhat.com/7.2/en/os/i....1.72.ia64.rpm
ftp://updates.redhat.com/7.2/en/os/i....1.72.ia64.rpm
ftp://updates.redhat.com/7.2/en/os/i....1.72.ia64.rpm
ftp://updates.redhat.com/7.2/en/os/i....1.72.ia64.rpm
ftp://updates.redhat.com/7.2/en/os/i....1.72.ia64.rpm

Red Hat Linux 7.3:

SRPMS:
ftp://updates.redhat.com/7.3/en/os/S...6.1.73.src.rpm

i386:
ftp://updates.redhat.com/7.3/en/os/i....1.73.i386.rpm
ftp://updates.redhat.com/7.3/en/os/i....1.73.i386.rpm
ftp://updates.redhat.com/7.3/en/os/i....1.73.i386.rpm
ftp://updates.redhat.com/7.3/en/os/i....1.73.i386.rpm
ftp://updates.redhat.com/7.3/en/os/i....1.73.i386.rpm
ftp://updates.redhat.com/7.3/en/os/i....1.73.i386.rpm

Red Hat Linux 8.0:

SRPMS:
ftp://updates.redhat.com/8.0/en/os/S...0-88.3.src.rpm

i386:
ftp://updates.redhat.com/8.0/en/os/i...-88.3.i386.rpm
ftp://updates.redhat.com/8.0/en/os/i...-88.3.i386.rpm
ftp://updates.redhat.com/8.0/en/os/i...-88.3.i386.rpm
ftp://updates.redhat.com/8.0/en/os/i...-88.3.i386.rpm
ftp://updates.redhat.com/8.0/en/os/i...-88.3.i386.rpm

Red Hat Linux 9:

SRPMS:
ftp://updates.redhat.com/9/en/os/SRP...0-88.3.src.rpm

i386:
ftp://updates.redhat.com/9/en/os/i38...-88.3.i386.rpm
ftp://updates.redhat.com/9/en/os/i38...-88.3.i386.rpm
ftp://updates.redhat.com/9/en/os/i38...-88.3.i386.rpm
ftp://updates.redhat.com/9/en/os/i38...-88.3.i386.rpm
ftp://updates.redhat.com/9/en/os/i38...-88.3.i386.rpm