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Red Hat Linux Advisories: openssl, mozilla

Mar 18, 2004, 14:26 (0 Talkback[s])

Red Hat Security Advisory

Synopsis: Updated OpenSSL packages fix vulnerabilities
Advisory ID: RHSA-2004:121-01
Issue date: 2004-03-17
Updated on: 2004-03-17
Product: Red Hat Linux
Keywords: DoS
Cross references:
Obsoletes: RHBA-2003:292
CVE Names: CAN-2004-0079 CAN-2004-0081 CAN-2004-0112


1. Topic:

Updated OpenSSL packages that fix several remote denial of service vulnerabilities are now available.

2. Relevant releases/architectures:

Red Hat Linux 9 - i386, i686

3. Problem description:

OpenSSL is a toolkit that implements Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library.

Testing performed by the OpenSSL group using the Codenomicon TLS Test Tool uncovered a null-pointer assignment in the do_change_cipher_spec() function in OpenSSL 0.9.6c-0.9.6l and 0.9.7a-0.9.7c. A remote attacker could perform a carefully-crafted SSL/TLS handshake against a server that used the OpenSSL library in such a way as to cause OpenSSL to crash. Depending on the application this could lead to a denial of service. The Common Vulnerabilities and Exposures project (cve.mitre.org/) has assigned the name CAN-2004-0079 to this issue.

Stephen Henson discovered a flaw in the SSL/TLS handshaking code when using Kerberos ciphersuites in OpenSSL 0.9.7a-0.9.7c. A remote attacker could perform a carefully-crafted SSL/TLS handshake against a server configured to use Kerberos ciphersuites in such a way as to cause OpenSSL to crash. Most applications have no ability to use Kerberos ciphersuites and are therefore unaffected by this issue. The Common Vulnerabilities and Exposures project (cve.mitre.org/) has assigned the name CAN-2004-0112 to this issue.

Testing performed by the OpenSSL group using the Codenomicon TLS Test Tool uncovered a bug in older versions of OpenSSL 0.9.6 prior to 0.9.6d that can lead to a denial of service attack (infinite loop). The Common Vulnerabilities and Exposures project (cve.mitre.org/) has assigned the name CAN-2004-0081 to this issue. This issue affects only the OpenSSL compatibility packages shipped with Red Hat Linux 9.

These updated packages contain patches provided by the OpenSSL group that protect against these issues.

NOTE: Because server applications are affected by this issue, users are advised to either restart all services using OpenSSL functionality or restart their system after installing these updated packages.

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/help/latest-up2date.pxt

5. RPMs required:

Red Hat Linux 9:

SRPMS:
ftp://updates.redhat.com/9/en/os/SRPMS/openssl-0.9.7a-20.2.src.rpm
ftp://updates.redhat.com/9/en/os/SRPMS/openssl096-0.9.6-25.9.src.rpm
ftp://updates.redhat.com/9/en/os/SRPMS/openssl096b-0.9.6b-15.src.rpm

i386:
ftp://updates.redhat.com/9/en/os/i386/openssl-0.9.7a-20.2.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/openssl-devel-0.9.7a-20.2.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/openssl-perl-0.9.7a-20.2.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/openssl096-0.9.6-25.9.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/openssl096b-0.9.6b-15.i386.rpm

i686:
ftp://updates.redhat.com/9/en/os/i686/openssl-0.9.7a-20.2.i686.rpm

6. Verificationx:

MD5 sum Package Name


fccbfa420f0e35abf2e3f1b7cfda504b 9/en/os/SRPMS/openssl-0.9.7a-20.2.src.rpm
6596a94a38bab238fcdf44f39fa9286a 9/en/os/SRPMS/openssl096-0.9.6-25.9.src.rpm
aec0dff60087c0deb0a3c7dbfe913b09 9/en/os/SRPMS/openssl096b-0.9.6b-15.src.rpm
9fbb1bc859dc155cfcb697b08d47c2b4 9/en/os/i386/openssl-0.9.7a-20.2.i386.rpm
2e29e4f4d0d2094f4adef29bda25f33f 9/en/os/i386/openssl-devel-0.9.7a-20.2.i386.rpm
edc37f7dea6dd4eb9ef3b04546f58661 9/en/os/i386/openssl-perl-0.9.7a-20.2.i386.rpm
efba1c47b07e268b6181dd3d712813fa 9/en/os/i386/openssl096-0.9.6-25.9.i386.rpm
b49b6268f779cfd8284a375bf03d6641 9/en/os/i386/openssl096b-0.9.6b-15.i386.rpm
e39bbb9c8235f9b6584eb8472f68a68c 9/en/os/i686/openssl-0.9.7a-20.2.i686.rpm

These packages are GPG signed by Red Hat for security. Our key is available from https://www.redhat.com/security/keys.html

You can verify each package with the following command:

rpm --checksig -v <filename>

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 <filename>

7. References:

http://www.codenomicon.com/testtools/tls/
http://www.niscc.gov.uk/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0079
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0081
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0112

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/solutions/security/news/contact.html

Copyright 2003 Red Hat, Inc.


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 (cve.mitre.org/) 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 (cve.mitre.org/) 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 (cve.mitre.org/) 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:

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/help/latest-up2date.pxt

5. RPMs required:

Red Hat Linux 9:

SRPMS:
ftp://updates.redhat.com/9/en/os/SRPMS/galeon-1.2.13-0.9.0.src.rpm
ftp://updates.redhat.com/9/en/os/SRPMS/mozilla-1.4.2-0.9.0.src.rpm

i386:
ftp://updates.redhat.com/9/en/os/i386/galeon-1.2.13-0.9.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/mozilla-1.4.2-0.9.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/mozilla-chat-1.4.2-0.9.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/mozilla-devel-1.4.2-0.9.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/mozilla-dom-inspector-1.4.2-0.9.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/mozilla-js-debugger-1.4.2-0.9.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/mozilla-mail-1.4.2-0.9.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/mozilla-nspr-1.4.2-0.9.0.i386.rpm ftp://updates.redhat.com/9/en/os/i386/mozilla-nspr-devel-1.4.2-0.9.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/mozilla-nss-1.4.2-0.9.0.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/mozilla-nss-devel-1.4.2-0.9.0.i386.rpm

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 https://www.redhat.com/security/keys.html

You can verify each package with the following command:

rpm --checksig -v <filename>

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 <filename>

7. References:

http://www.mozilla.org/projects/security/pki/nss/#NSS_39
http://bugzilla.mozilla.org/show_bug.cgi?id=227417
http://www.niscc.gov.uk/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0564
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0594
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0191

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/solutions/security/news/contact.html

Copyright 2003 Red Hat, Inc