Incomplete List of Disallowed Inputs in Grav CMS - CVE-2023-34252
Published: June 19, 2023
Vulnerability identifier: #VU77508
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-34252
CWE-ID: CWE-184
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to Server-side Template Injection (SSTI) issue in filterFilter. A remote administrator can execute arbitrary code on the system.
Affected software
Grav CMS
How to mitigate CVE-2023-34252
Install updates from vendor's website.
Grav CMS - update to 1.7.42
External References
- https://github.com/getgrav/grav/blob/1.7.40/system/src/Grav/Common/Twig/Extension/GravExtension.php#L1692-L1698
- https://github.com/getgrav/grav/security/advisories/GHSA-96xv-rmwj-6p9w
- https://github.com/getgrav/grav/blob/1.7.40/system/src/Grav/Common/Utils.php#L1956-L2074
- https://github.com/getgrav/grav/commit/244758d4383034fe4cd292d41e477177870b65ec