CVE-2024-28118
Prior to version 1.7.45, due to the unrestricted access to twig extension class from Grav context, an attacker can redefine config variable.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Grav is an open-source, flat-file content management system. Prior to version 1.7.45, due to the unrestricted access to twig extension class from Grav context, an attacker can redefine config variable. As a result, attacker can bypass a previous SSTI mitigation. Twig processing of static pages can be enabled in the front matter by any administrative user allowed to create or edit pages. As the Twig processor runs unsandboxed, this behavior can be used to gain arbitrary code execution and elevate privileges on the instance. Version 1.7.45 contains a fix for this issue.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.22% probability · 67th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Affected
- getgrav/grav
- Source
- security-advisories@github.com
References
- https://github.com/getgrav/grav/commit/de1ccfa12dbcbf526104d68c1a6bc202a98698fePatch
- https://github.com/getgrav/grav/security/advisories/GHSA-r6vw-8v8r-pmp4Exploit, Vendor Advisory
- https://github.com/getgrav/grav/commit/de1ccfa12dbcbf526104d68c1a6bc202a98698fePatch
- https://github.com/getgrav/grav/security/advisories/GHSA-r6vw-8v8r-pmp4Exploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.