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.
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History
Fri, 18 Oct 2024 18:15:00 +0000
Type | Values Removed | Values Added |
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CPEs | cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:* | |
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2024-10-18T17:19:07.910Z
Reserved: 2023-07-10T17:51:29.609Z
Link: CVE-2023-37897
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Updated: 2024-08-02T17:23:27.730Z
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Status : Modified
Published: 2023-07-18T21:15:15.663
Modified: 2024-11-21T08:12:25.187
Link: CVE-2023-37897
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