CVE-2006-5178

Race condition in the symlink function in PHP 5.1.6 and earlier allows local users to bypass the open_basedir restriction by using a combination of symlink, mkdir, and unlink functions to change the file path after the open_basedir check and before the file is opened by the underlying system, as demonstrated by symlinking a symlink into a subdirectory, to point to a parent directory via .. (dot dot) sequences, and then unlinking the resulting symlink.

CVSS v2.0 NVD

6.2 MEDIUMAV:L/AC:H/Au:N/C:C/I:C/A:C

EPSS

0.66% chance of exploitation in the next 30 days, 51st percentile

Published

2006-10-06

Updated

2024-08-07

Proof-of-concept exploits (1)

• http://www.securityfocus.com/archive/1/448020/100/0/threaded

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/10557

Security advisories

• http://secunia.com/advisories/22235
• http://www.hardened-php.net/advisory_082006.132.html
• http://www.mandriva.com/security/advisories?name=MDKSA-2006:185
• http://www.securityfocus.com/bid/20326

References

• CVE Record
• NVD entry