PhastPress <= 3.7 - Unauthenticated Arbitrary File Read via Null Byte Injection
Vulnerability Description
The PhastPress plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Read via null byte injection in all versions up to, and including, 3.7. This is due to a discrepancy between the extension validation in `getExtensionForURL()` which operates on URL-decoded paths, and `appendNormalized()` which strips everything after a null byte before constructing the filesystem path. This makes it possible for unauthenticated attackers to read arbitrary files from the webroot, including wp-config.php, by appending a double URL-encoded null byte (%2500) followed by an allowed extension (.txt) to the file path.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Angus Girvan
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/eec9bbc0-5a68-4624-a672-bd6227d6fa45?source=cve
- https://plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9641
- https://plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9608
- https://plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9570
- https://plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9597
- https://plugins.trac.wordpress.org/changeset/3418139
Affected Vendor
kiboit
View all reports →Affected Software
Timeline
CVSS Vectors
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.