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Red Hat: 2010:0681-01 Critical Advisory for Firefox Security Issues

red hat
Calendar Grey September 7, 2010
Dist Redhat Esm H88
Red Hat rolls out an essential patch for Firefox on RHEL, addressing several vulnerabilities. Important modifications included.
Updated firefox packages that fix several security issues are now available for Red Hat Enterprise Linux 4 and 5

Solution

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

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at

If you encounter the condition where Firefox fails to connect to a server that has an ephemeral key that is too small, you can try connecting using a cipher suite with a different key exchange algorithm by disabling all DHE cipher suites in Firefox:

1) Type about:config in the URL bar and press the Enter key. 2) In the Filter search bar, type ssl3.dhe 3) For all preferences now presented, double-click the true value to change the value to false.

Note: This change would affect connections to all HTTPS servers.

Summary

Mozilla Firefox is an open source web browser. XULRunner provides the XUL Runtime environment for Mozilla Firefox.
Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. (CVE-2010-3169, CVE-2010-2762)
Several use-after-free and dangling pointer flaws were found in Firefox. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. (CVE-2010-2760, CVE-2010-2766, CVE-2010-2767, CVE-2010-3167, CVE-2010-3168)
Multiple buffer overflow flaws were found in Firefox. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. (CVE-2010-2765, CVE-2010-3166)
Multiple cross-site scripting (XSS) flaws were found in Firefox. A web page containing malicious content could cause Firefox to run JavaScript code with the permissions of a different website. (CVE-2010-2768, CVE-2010-2769)
A flaw was found in the Firefox XMLHttpRequest object. A remote site could use this flaw to gather information about servers on an internal private network. (CVE-2010-2764)
For technical details regarding these flaws, refer to the Mozilla security advisories for Firefox 3.6.9. You can find a link to the Mozilla advisories in the References section of this erratum.
Note: After installing this update, Firefox will fail to connect (with HTTPS) to a server using the SSL DHE (Diffie-Hellman Ephemeral) key exchange if the server's ephemeral key is too small. Connecting to such servers is a security risk as an ephemeral key that is too small makes the SSL connection vulnerable to attack. Refer to the Solution section for further information.
All Firefox users should upgrade to these updated packages, which contain Firefox version 3.6.9, which corrects these issues. After installing the update, Firefox must be restarted for the changes to take effect.

Topics%20covered

Topics Covered

security advisory security issue buffer overflow red hat critical firefox xss

References

https://access.redhat.com/security/cve/CVE-2010-2760 https://access.redhat.com/security/cve/CVE-2010-2762 https://access.redhat.com/security/cve/CVE-2010-2764 https://access.redhat.com/security/cve/CVE-2010-2765 https://access.redhat.com/security/cve/CVE-2010-2766 https://access.redhat.com/security/cve/CVE-2010-2767 https://access.redhat.com/security/cve/CVE-2010-2768 https://access.redhat.com/security/cve/CVE-2010-2769 https://access.redhat.com/security/cve/CVE-2010-3166 https://access.redhat.com/security/cve/CVE-2010-3167 https://access.redhat.com/security/cve/CVE-2010-3168 https://access.redhat.com/security/cve/CVE-2010-3169 https://access.redhat.com/security/updates/classification#critical https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox-3.6/

Package List

Red Hat Enterprise Linux AS version 4:
Source:
i386: firefox-3.6.9-1.el4.i386.rpm firefox-debuginfo-3.6.9-1.el4.i386.rpm nspr-4.8.6-1.el4.i386.rpm nspr-debuginfo-4.8.6-1.el4.i386.rpm nspr-devel-4.8.6-1.el4.i386.rpm nss-3.12.7-1.el4.i386.rpm nss-debuginfo-3.12.7-1.el4.i386.rpm nss-devel-3.12.7-1.el4.i386.rpm nss-tools-3.12.7-1.el4.i386.rpm
ia64: firefox-3.6.9-1.el4.ia64.rpm firefox-debuginfo-3.6.9-1.el4.ia64.rpm nspr-4.8.6-1.el4.i386.rpm nspr-4.8.6-1.el4.ia64.rpm nspr-debuginfo-4.8.6-1.el4.i386.rpm nspr-debuginfo-4.8.6-1.el4.ia64.rpm nspr-devel-4.8.6-1.el4.ia64.rpm nss-3.12.7-1.el4.i386.rpm nss-3.12.7-1.el4.ia64.rpm nss-debuginfo-3.12.7-1.el4.i386.rpm nss-debuginfo-3.12.7-1.el4.ia64.rpm nss-devel-3.12.7-1.el4.ia64.rpm nss-tools-3.12.7-1.el4.ia64.rpm
ppc: firefox-3.6.9-1.el4.ppc.rpm firefox-debuginfo-3.6.9-1.el4.ppc.rpm nspr-4.8.6-1.el4.ppc.rpm nspr-4.8.6-1.el4.ppc64.rpm nspr-debuginfo-4.8.6-1.el4.ppc.rpm nspr-debuginfo-4.8.6-1.el4.ppc64.rpm nspr-devel-4.8.6-1.el4.ppc.rpm nss-3.12.7-1.el4.ppc.rpm nss-3.12.7-1.el4.ppc64.rpm nss-debuginfo-3.12.7-1.el4.ppc.rpm nss-debuginfo-3.12.7-1.el4.ppc64.rpm nss-devel-3.12.7-1.el4.ppc.rpm nss-tools-3.12.7-1.el4.ppc.rpm
s390: firefox-3.6.9-1.el4.s390.rpm firefox-debuginfo-3.6.9-1.el4.s390.rpm nspr-4.8.6-1.el4.s390.rpm

Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2010:0681-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2010:0681.html
Issue date: 2010-09-07

Topic

Updated firefox packages that fix several security issues are now availablefor Red Hat Enterprise Linux 4 and 5.The Red Hat Security Response Team has rated this update as having criticalsecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory security issue buffer overflow red hat critical firefox xss

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Bugs Fixed

630055 - CVE-2010-3169 Mozilla Miscellaneous memory safety hazards

630056 - CVE-2010-2765 Mozilla Frameset integer overflow vulnerability (MFSA 2010-50)

630059 - CVE-2010-2767 Mozilla Dangling pointer vulnerability using DOM plugin array (MFSA 2010-51)

630061 - CVE-2010-3166 Mozilla Heap buffer overflow in nsTextFrameUtils::TransformText (MFSA 2010-53)

630062 - CVE-2010-2760 Mozilla Dangling pointer vulnerability in nsTreeSelection (MFSA 2010-54)

630064 - CVE-2010-3168 Mozilla XUL tree removal crash and remote code execution (MFSA 2010-55)

630067 - CVE-2010-3167 Mozilla Dangling pointer vulnerability in nsTreeContentView (MFSA 2010-56)

630069 - CVE-2010-2766 Mozilla Crash and remote code execution in normalizeDocument (MFSA 2010-57)

630071 - CVE-2010-2762 Mozilla SJOW creates scope chains ending in outer object (MFSA 2010-59)

630074 - CVE-2010-2768 Mozilla UTF-7 XSS by overriding document charset using type attribute (MFSA 2010-61)

630075 - CVE-2010-2769 Mozilla Copy-and-paste or drag-and-drop into designMode document allows XSS (MFSA 2010-62)

630078 - CVE-2010-2764 Mozilla Information leak via XMLHttpRequest statusText (MFSA 2010-63)

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