CVE-2023-37897
Grav Server Side Template Injection (SSTI) Vulnerability
Description
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.
INFO
Published Date :
July 18, 2023, 9:15 p.m.
Last Modified :
Nov. 21, 2024, 8:12 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-37897
.
URL | Resource |
---|---|
https://github.com/getgrav/grav/commit/71bbed12f950de8335006d7f91112263d8504f1b | Product |
https://github.com/getgrav/grav/commit/b4c62101a43051fc7f5349c7d0a5b6085375c1d7 | Patch |
https://github.com/getgrav/grav/security/advisories/GHSA-9436-3gmp-4f53 | Exploit Mitigation Vendor Advisory |
https://github.com/getgrav/grav/commit/71bbed12f950de8335006d7f91112263d8504f1b | Product |
https://github.com/getgrav/grav/commit/b4c62101a43051fc7f5349c7d0a5b6085375c1d7 | Patch |
https://github.com/getgrav/grav/security/advisories/GHSA-9436-3gmp-4f53 | Exploit Mitigation Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-37897
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-37897
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/getgrav/grav/commit/71bbed12f950de8335006d7f91112263d8504f1b Added Reference https://github.com/getgrav/grav/commit/b4c62101a43051fc7f5349c7d0a5b6085375c1d7 Added Reference https://github.com/getgrav/grav/security/advisories/GHSA-9436-3gmp-4f53 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jul. 28, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/getgrav/grav/commit/71bbed12f950de8335006d7f91112263d8504f1b No Types Assigned https://github.com/getgrav/grav/commit/71bbed12f950de8335006d7f91112263d8504f1b Product Changed Reference Type https://github.com/getgrav/grav/commit/b4c62101a43051fc7f5349c7d0a5b6085375c1d7 No Types Assigned https://github.com/getgrav/grav/commit/b4c62101a43051fc7f5349c7d0a5b6085375c1d7 Patch Changed Reference Type https://github.com/getgrav/grav/security/advisories/GHSA-9436-3gmp-4f53 No Types Assigned https://github.com/getgrav/grav/security/advisories/GHSA-9436-3gmp-4f53 Exploit, Mitigation, Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:getgrav:grav:1.7.42:*:*:*:*:*:*:* *cpe:2.3:a:getgrav:grav:1.7.42.1:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-37897
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-37897
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.11 }} -0.05%
score
0.44164
percentile