Grav is a file-based Web-platform built in PHP. Grav is subject to a server side template injection (SSTI) vulnerability. The fix for another SSTI vulnerability using `|map`, `|filter` and `|reduce` twigs implemented in the commit `71bbed1` introduces bypass of the denylist due to incorrect return value from `isDangerousFunction()`, which allows to execute the payload prepending double backslash (`\\`). The `isDangerousFunction()` check in version 1.7.42 and onwards retuns `false` value instead of `true` when the `\` symbol is found in the `$name`. This vulnerability can be exploited if the attacker has access to: 1. an Administrator account, or 2. a non-administrator, user account that has Admin panel access and Create/Update page permissions. A fix for this vulnerability has been introduced in commit `b4c6210` and is included in release version `1.7.42.2`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
History

Fri, 18 Oct 2024 18:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-07-18T20:22:13.008Z

Updated: 2024-10-18T17:19:07.910Z

Reserved: 2023-07-10T17:51:29.609Z

Link: CVE-2023-37897

cve-icon Vulnrichment

Updated: 2024-08-02T17:23:27.730Z

cve-icon NVD

Status : Analyzed

Published: 2023-07-18T21:15:15.663

Modified: 2023-07-28T22:24:41.520

Link: CVE-2023-37897

cve-icon Redhat

No data.