Security Digest · Critical advisory (no CVE assigned)
GHSA-v42g-7q2x-cw32: Zendframework1 potential SQL injection vector using null byte for PDO (MsSql, SQLite)
The PDO adapters of Zend Framework 1 do not filter null bytes values in SQL statements.
CVSS 9.8 Critical GitHub-reviewed · critical
Should you act?
- Only if you depend on one of the packages below, directly or transitively, in a vulnerable version. Check your lockfile with
composer audit. - No CVE has been assigned, so it will not appear in CVE-based scanners that ignore GitHub advisories.
npm audit,pip-auditand Dependabot do read GitHub advisories.
Affected packages
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Composer (PHP) | zendframework/zendframework1 | >= 1.12.0, < 1.12.16 | 1.12.16 |
Details
The PDO adapters of Zend Framework 1 do not filter null bytes values in SQL statements. A PDO adapter can treat null bytes in a query as a string terminator, allowing an attacker to add arbitrary SQL following a null byte, and thus create a SQL injection.
We tested and verified the null byte injection using pdodblib (FreeTDS) on a Linux environment to access a remote Microsoft SQL Server, and also tested against and noted the vector against pdosqlite.
CVSS: 9.8 (v3.1) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Sources and references
- GitHub Advisory GHSA-v42g-7q2x-cw32 github.com
- framework.zend.com framework.zend.com
- github.com github.com
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