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CVE-2011-0420

5.0 · MEDIUM

The grapheme_extract function in the Internationalization extension (Intl) for ICU for PHP 5.3.5 allows context-dependent attackers to cause a denial of service (crash) via an invalid size argument…

Published Feb 19, 2011phpEPSS 14.41%

Overview

CVE-2011-0420 is a medium-severity vulnerability affecting php php. It was published on February 19, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The grapheme_extract function in the Internationalization extension (Intl) for ICU for PHP 5.3.5 allows context-dependent attackers to cause a denial of service (crash) via an invalid size argument, which triggers a NULL pointer dereference.

Remediation

Check the references section for vendor advisories and patches from php. Update php 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

Reflists.apple.com/archives/Security-announce/2011//Oct/msg00003.htmlRefsecurityreason.com/achievement_securityalert/94Refsecurityreason.com/securityalert/8087Refsupport.apple.com/kb/HT5002Refsvn.php.net/viewvc/php/php-src/trunk/ext/intl/grapheme/grapheme_string.c?r1=306449&r2=306448&pathrev=306449Refwww.debian.org/security/2011/dsa-2266Refwww.exploit-db.com/exploits/16182Refwww.kb.cert.org/vuls/id/210829Refwww.securityfocus.com/archive/1/516504/100/0/threadedRefwww.securityfocus.com/archive/1/516518/100/0/threaded

How CyberStrike helps

Frequently asked questions

What is CVE-2011-0420?

CVE-2011-0420 is a medium-severity vulnerability affecting php php. It was published on February 19, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2011-0420?

This vulnerability has a CVSS 2.0 base score of 5.0, 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-2011-0420?

Check the references section for vendor advisories and patches from php. Update php 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-2011-0420?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-0420 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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