CVE-2006-4483

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-08-31 · updated 2026-06-16
Weakness: CWE-862

Description

The cURL extension files (1) ext/curl/interface.c and (2) ext/curl/streams.c in PHP before 5.1.5 permit the CURLOPT_FOLLOWLOCATION option when open_basedir or safe_mode is enabled, which allows attackers to perform unauthorized actions, possibly related to the realpath cache.

Affected products

PHP: before 5.1.5 — fixed in 5.1.5

How to fix

Upgrade to a fixed version: PHP 5.1.5. Check the vendor advisory for mitigations.

References

http://cvs.php.net/viewcvs.cgi/php-src/ext/curl/interface.c?r1=1.62.2.14.2.6&r2=1.62.2.14.2.7
http://cvs.php.net/viewcvs.cgi/php-src/ext/curl/interface.c?view=log
http://cvs.php.net/viewvc.cgi/php-src/ext/curl/streams.c?r1=1.14.2.2.2.3&r2=1.14.2.2.2.4
http://secunia.com/advisories/21546
http://secunia.com/advisories/22039
http://secunia.com/advisories/30411
http://securitytracker.com/id?1016984
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0178
http://www.novell.com/linux/security/advisories/2006_52_php.html
http://www.php.net/ChangeLog-5.php#5.1.5
http://www.php.net/release_5_1_5.php
http://www.securityfocus.com/archive/1/492671/100/0/threaded

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