CVE-2006-3017

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-06-14 · updated 2026-06-16

Description

zend_hash_del_key_or_index in zend_hash.c in PHP before 4.4.3 and 5.x before 5.1.3 can cause zend_hash_del to delete the wrong element, which prevents a variable from being unset even when the PHP unset function is called, which might cause the variable's value to be used in security-relevant operations.

Affected products

PHP: through 4.4.2; 3.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5 (+78)

References

http://archives.neohapsis.com/archives/fulldisclosure/2006-08/0166.html
http://cvs.php.net/viewcvs.cgi/Zend/zend_hash.c?hideattic=0&r1=1.87.4.8.2.1&r2=1.87.4.8.2.2
http://cvs.php.net/viewcvs.cgi/Zend/zend_hash.c?hideattic=0&view=log
http://rhn.redhat.com/errata/RHSA-2006-0549.html
http://secunia.com/advisories/19927
http://secunia.com/advisories/21031
http://secunia.com/advisories/21050
http://secunia.com/advisories/21125
http://secunia.com/advisories/21135
http://secunia.com/advisories/21202
http://secunia.com/advisories/21252

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