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

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

EPSS

0.68% chance of exploitation in the next 30 days, 50th 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

References

• CVE Record
• NVD entry

Related

• CVE-2006-5177
• CVE-2006-5180
• CVE-2006-5167
• CVE-2006-5181
• CVE-2006-5166
• CVE-2006-5182