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CVE-2011-4153

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…

Medium5.0Public exploitEPSS 11.8%
Published
Updated
Reserved
Assigned by
mitre

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.

Public exploit

A reference of the record is tagged as an exploit or proof of concept: anyone can try it against an unpatched system.

Timeline

  1. ID reserved

    By mitre

  2. · 3 months later

    Published

  3. · 13 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2011-4153, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified2.0Medium5.0AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS (exploitation in 30 days)
11.8% · top 3.9% of all CVEs (8 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.

Weakness

Affected products

  • n/a

    • affected n/a

References (9)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .