PMASA-2016-37
Announcement-ID: PMASA-2016-37
Date: 2016-07-12
Summary
Path traversal with SaveDir and UploadDir
Description
A vulnerability was reported with the %u username replacement functionality of the SaveDir and UploadDir features. When the username substitution is configured, a specially-crafted user name can be used to circumvent restrictions to traverse the file system.
Severity
We consider this vulnerability to be serious, however due to the mitigation factors the default state is not vulnerable.
Mitigation factor
1) A system must be configured with the %u username replacement, such as `$cfg['SaveDir'] = 'SaveDir_%u';` 2) The user must be able to create a specially-crafted MySQL user, including the `/.` sequence of characters, such as `/../../`
Affected Versions
All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and 4.0.x versions (prior to 4.0.10.17) are affected
Solution
Upgrade to phpMyAdmin 4.6.4, 4.4.15.8, or 4.0.10.17 or newer or apply patch listed below.
References
Thanks to Emanuel Bronshtein @e3amn2l for reporting this vulnerability.
Assigned CVE IDs: CVE-2016-6614
CWE IDs: CWE-661
Patches
The following commits have been made on the 4.0 branch to fix this issue:
The following commits have been made on the 4.4 branch to fix this issue:
The following commits have been made on the 4.6 branch to fix this issue:
More information
For further information and in case of questions, please contact the phpMyAdmin security team at security@phpmyadmin.net.