CVE-2010-4577

Name: CVE-2010-4577
Creator: NVD / NIST
Published: 2010-12-22T01:00:03.157+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.21%

Last modified Jun 16, 2026

CVE-2010-4577 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The CSSParser::parseFontFaceSrc function in WebCore/css/CSSParser.cpp in WebKit, as used in Google Chrome before 8.0.552.224, Chrome OS before 8.0.552.343, webkitgtk before 1.2.6, and other products does not properly parse Cascading Style Sheets (CSS) token sequences, which allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted local font, related to "Type Confusion.". EPSS estimates a 2.21% chance of exploitation in the next 30 days.

Description

The CSSParser::parseFontFaceSrc function in WebCore/css/CSSParser.cpp in WebKit, as used in Google Chrome before 8.0.552.224, Chrome OS before 8.0.552.343, webkitgtk before 1.2.6, and other products does not properly parse Cascading Style Sheets (CSS) token sequences, which allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted local font, related to "Type Confusion."

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

2.21%

80.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Google	Chrome	< 8.0.552.224
Webkitgtk	Webkitgtk	< 1.2.6
Google	Chrome Os	< 8.0.552.343
Fedoraproject	Fedora	13
Debian	Debian Linux	6.0
Debian	Debian Linux	7.0

References

http://code.google.com/p/chromium/issues/detail?id=63866Exploit, Issue Tracking, Mailing List
http://googlechromereleases.blogspot.com/2010/12/stable-beta-channel-updates_13.htmlRelease Notes
http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052906.htmlMailing List, Third Party Advisory
http://secunia.com/advisories/42648Broken Link, Third Party Advisory
http://secunia.com/advisories/43086Broken Link, Third Party Advisory
http://trac.webkit.org/changeset/72685Mailing List, Patch
http://trac.webkit.org/changeset/72685/trunk/WebCore/css/CSSParser.cppMailing List, Patch
http://www.debian.org/security/2011/dsa-2188Mailing List, Third Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-201012-01.xmlThird Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-0177.htmlBroken Link, Third Party Advisory
http://www.securityfocus.com/bid/45722Broken Link, Third Party Advisory, VDB Entry
http://www.vupen.com/english/advisories/2011/0216Broken Link, Third Party Advisory
https://bugs.webkit.org/show_bug.cgi?id=49883Permissions Required
https://bugzilla.redhat.com/show_bug.cgi?id=667025Issue Tracking, Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13953Broken Link, Third Party Advisory
http://code.google.com/p/chromium/issues/detail?id=63866Exploit, Issue Tracking, Mailing List
http://googlechromereleases.blogspot.com/2010/12/stable-beta-channel-updates_13.htmlRelease Notes
http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052906.htmlMailing List, Third Party Advisory
http://secunia.com/advisories/42648Broken Link, Third Party Advisory
http://secunia.com/advisories/43086Broken Link, Third Party Advisory
http://trac.webkit.org/changeset/72685Mailing List, Patch
http://trac.webkit.org/changeset/72685/trunk/WebCore/css/CSSParser.cppMailing List, Patch
http://www.debian.org/security/2011/dsa-2188Mailing List, Third Party Advisory
http://www.gentoo.org/security/en/glsa/glsa-201012-01.xmlThird Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-0177.htmlBroken Link, Third Party Advisory
http://www.securityfocus.com/bid/45722Broken Link, Third Party Advisory, VDB Entry
http://www.vupen.com/english/advisories/2011/0216Broken Link, Third Party Advisory
https://bugs.webkit.org/show_bug.cgi?id=49883Permissions Required
https://bugzilla.redhat.com/show_bug.cgi?id=667025Issue Tracking, Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13953Broken Link, Third Party Advisory

Timeline

Published: Dec 22, 2010
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2010-4577?

How severe is CVE-2010-4577?

CVE-2010-4577 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.21% probability of exploitation in the next 30 days.

How do I fix CVE-2010-4577?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2010-4577?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST