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CVE-2011-4153

MediumPublished

PHP 5.3.8 does not always check the return value of the zend_strndup function, which might allow remote attackers to cause a denial of service (NULL pointer...

Published: Jan 18, 2012
Updated: Aug 7, 2024
Assigning CNA: mitre
Evidence observed: Jan 14, 2012

Primary CVSS

5.0/ 10Medium

nvd · CVSS 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS probability estimate

11.8%

Moderate · next 30 days

Percentile: 96.0%
Model date: Oct 12, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

PHP 5.3.8 does not always check the return value of the zend_strndup function, which might allow remote attackers to cause a denial of service (NULL pointer dereference and application crash) via crafted input to an application that performs strndup operations on untrusted string data, as demonstrated by the define function in zend_builtin_functions.c, and unspecified functions in ext/soap/php_sdl.c, ext/standard/syslog.c, ext/standard/browscap.c, ext/oci8/oci8.c, ext/com_dotnet/com_typeinfo.c, and main/php_open_temporary_file.c.

Sources

PHP 5.3.8 - Multiple VulnerabilitiesExploit
Maksymilian Arciemowicz · multiple · Jan 14, 2012

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