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Vulnerability record · CVE-2011-4153 · published 18 January 2012

CVE-2011-4153: Php improper input validation vulnerability

Php · Php

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.

5.0 CVSS 2.0 Medium EPSS 12% · top 4.1% CWE-20 · Improper input validation
5.0CVSS 2.0 base score
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
18References, 6 tagged exploit
16 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://archives.neohapsis.com/archives/bugtraq/2012-01/0092.html Exploit
http://cxsecurity.com/research/103 Exploit
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00001.html
http://marc.info/?l=bugtraq&m=134012830914727&w=2
http://secunia.com/advisories/48668
http://www.exploit-db.com/exploits/18370/ Exploit
http://archives.neohapsis.com/archives/bugtraq/2012-01/0092.html Exploit
http://cxsecurity.com/research/103 Exploit
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00001.html
http://marc.info/?l=bugtraq&m=134012830914727&w=2
http://secunia.com/advisories/48668
http://www.exploit-db.com/exploits/18370/ Exploit

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Source: NIST National Vulnerability Database (record CVE-2011-4153), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.