The session extension in PHP before 5.2.4 might allow local users to bypass open_basedir restrictions via a session file that is a symlink.
http://secunia.com/advisories/26642
http://secunia.com/advisories/26822
http://secunia.com/advisories/26838
http://secunia.com/advisories/27102
http://secunia.com/advisories/27377
https://exchange.xforce.ibmcloud.com/vulnerabilities/36387
https://issues.rpath.com/browse/RPL-1693
https://issues.rpath.com/browse/RPL-1702
http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml
http://www.php.net/ChangeLog-5.php#5.2.4
Published: 2007-09-04
Base Score: 4.4
Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:P
Severity: Medium