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CVE-2008-4066

4.3 · MEDIUM

Mozilla Firefox 2.0.0.14, and other versions before 2.0.0.17, allows remote attackers to bypass cross-site scripting (XSS) protection mechanisms and conduct XSS attacks via HTML-escaped low surroga…

Published Sep 24, 2008mozillaCWE-79EPSS 1.76%

Overview

CVE-2008-4066 is a medium-severity vulnerability affecting mozilla firefox. It was published on September 24, 2008 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Mozilla Firefox 2.0.0.14, and other versions before 2.0.0.17, allows remote attackers to bypass cross-site scripting (XSS) protection mechanisms and conduct XSS attacks via HTML-escaped low surrogate characters that are ignored by the HTML parser, as demonstrated by a "jav&#56325ascript" sequence, aka "HTML escaped low surrogates bug."

Remediation

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refblogs.technet.com/bluehat/archive/2008/08/14/targeted-fuzzing.aspxRefdownload.novell.com/Download?buildid=WZXONb-tqBw~Refjvn.jp/en/jp/JVN96950482/index.htmlRefjvndb.jvn.jp/ja/contents/2011/JVNDB-2011-000058.htmlReflists.opensuse.org/opensuse-security-announce/2008-10/msg00005.htmlRefsecunia.com/advisories/31984Refsecunia.com/advisories/31985Refsecunia.com/advisories/32007Refsecunia.com/advisories/32010Refsecunia.com/advisories/32012

How CyberStrike helps

Frequently asked questions

What is CVE-2008-4066?

CVE-2008-4066 is a medium-severity vulnerability affecting mozilla firefox. It was published on September 24, 2008 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2008-4066?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2008-4066?

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2008-4066?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2008-4066 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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