Description (CNA)
phpMyFAQ before 4.1.7, when configured to use PostgreSQL via the native pgsql PHP extension, declares an incorrect LIKE ESCAPE character ('=') in the Search/Database/Pgsql.php backend while escapeLikeWildcards() escapes user input with the '|' prefix. As a result, wildcard escaping is a no-op and user-supplied % and _ characters remain active LIKE wildcards. An unauthenticated attacker can submit such characters in the public FAQ search form to force maximally broad pattern matches and expensive sequential scans, resulting in a denial of service. The PDO PostgreSQL backend is not affected, and quotes remain escaped so this does not enable quote-breaking SQL injection or data exfiltration.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| thorsten / phpMyFAQ | affected 4.2.0-alpha before 4.1.7; unaffected 4.1.7 |
CWE
CWE-88
References
- https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5hx6-c293-588h
- https://www.vulncheck.com/advisories/phpmyfaq-before-like-wildcard-injection-via-postgresql
ADP enrichment
No English description supplied.