Red Hat alert: Updated Mozilla packages fix security issues

Posted by dave on Mar 18, 2004 3:44 AM EDT
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Updated Mozilla packages that fix vulnerabilities in S/MIME parsing as well as other issues and bugs are now available.

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- --------------------------------------------------------------------- Red Hat Security Advisory

Synopsis: Updated Mozilla packages fix security issues Advisory ID: RHSA-2004:112-01 Issue date: 2004-03-17 Updated on: 2004-03-17 Product: Red Hat Linux Keywords: nss mozilla Cross references: Obsoletes: CVE Names: CAN-2003-0564 CAN-2003-0594 CAN-2004-0191 - ---------------------------------------------------------------------

1. Topic:

Updated Mozilla packages that fix vulnerabilities in S/MIME parsing as well as other issues and bugs are now available.

2. Relevant releases/architectures:

Red Hat Linux 9 - i386

3. Problem description:

Mozilla is a Web browser and mail reader, designed for standards compliance, performance and portability. Network Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled server applications.

NISCC testing of implementations of the S/MIME protocol uncovered a number of bugs in NSS versions prior to 3.9. The parsing of unexpected ASN.1 constructs within S/MIME data could cause Mozilla to crash or consume large amounts of memory. A remote attacker could potentially trigger these bugs by sending a carefully-crafted S/MIME message to a victim. The Common Vulnerabilities and Exposures project ( has assigned the name CAN-2003-0564 to this issue.

Andreas Sandblad discovered a cross-site scripting issue that affects various versions of Mozilla. When linking to a new page it is still possible to interact with the old page before the new page has been successfully loaded. Any Javascript events will be invoked in the context of the new page, making cross-site scripting possible if the different pages belong to different domains. The Common Vulnerabilities and Exposures project ( has assigned the name CAN-2004-0191 to this issue.

Flaws have been found in the cookie path handling between a number of Web browsers and servers. The HTTP cookie standard allows a Web server supplying a cookie to a client to specify a subset of URLs on the origin server to which the cookie applies. Web servers such as Apache do not filter returned cookies and assume that the client will only send back cookies for requests that fall within the server-supplied subset of URLs. However, by supplying URLs that use path traversal (/../) and character encoding, it is possible to fool many browsers into sending a cookie to a path outside of the originally-specified subset. The Common Vulnerabilities and Exposures project ( has assigned the name CAN-2003-0594 to this issue.

Users of Mozilla are advised to upgrade to these updated packages, which contain Mozilla version 1.4.2 and are not vulnerable to these issues.

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:


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:

5. RPMs required:

Red Hat Linux 9:



6. Verificationx:

MD5 sum Package Name - --------------------------------------------------------------------------

992ef9250ed9c98cebbb8dece0b42a40 9/en/os/SRPMS/galeon-1.2.13-0.9.0.src.rpm 392c1e8d54668de9114ced4cb26f2239 9/en/os/SRPMS/mozilla-1.4.2-0.9.0.src.rpm 4246168924d57be9a4b3549e119c0fa7 9/en/os/i386/galeon-1.2.13-0.9.0.i386.rpm 0fba1f22954569f2fe62b20c12badde8 9/en/os/i386/mozilla-1.4.2-0.9.0.i386.rpm f36041c9afacb8ac07d7caf0ffba5636 9/en/os/i386/mozilla-chat-1.4.2-0.9.0.i386.rpm 134a3539d5f3d3de4456bb2c2b70948d 9/en/os/i386/mozilla-devel-1.4.2-0.9.0.i386.rpm 0bfad47e55d2d8202a5dc80b504cf68b 9/en/os/i386/mozilla-dom-inspector-1.4.2-0.9.0.i386.rpm e5a9af2c6b720adb3ca8f831568ce208 9/en/os/i386/mozilla-js-debugger-1.4.2-0.9.0.i386.rpm 8909de56f2915ffb9c3adbedad0da0dc 9/en/os/i386/mozilla-mail-1.4.2-0.9.0.i386.rpm f4d1279c459694868473c8ad2609b490 9/en/os/i386/mozilla-nspr-1.4.2-0.9.0.i386.rpm 3a2f9360085c0ecb0a312da2dec1e703 9/en/os/i386/mozilla-nspr-devel-1.4.2-0.9.0.i386.rpm 5198348d07a15c8a064688baf03f4aea 9/en/os/i386/mozilla-nss-1.4.2-0.9.0.i386.rpm cb849bc1da29db4d3e5a9e50e708fae6 9/en/os/i386/mozilla-nss-devel-1.4.2-0.9.0.i386.rpm

These packages are GPG signed by Red Hat for security. Our key is available from

You can verify each package with the following command: rpm --checksig -v

If you only wish to verify that each package has not been corrupted or tampered with, examine only the md5sum with the following command: md5sum

7. References:

8. Contact:

The Red Hat security contact is . More contact details at

Copyright 2003 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux)


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