CVE-2024-28118 Grav vulnerable to Server Side Template Injection (SSTI)

2024-03-2121:55:11

CWE-94

GitHub_M

www.cve.org

grav

server side template injection

ssti

twig processor

arbitrary code execution

security vulnerability

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

9.3

Confidence

High

EPSS

Percentile

9.0%

JSON

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.

CNA Affected

[
  {
    "vendor": "getgrav",
    "product": "grav",
    "versions": [
      {
        "version": "< 1.7.45",
        "status": "affected"
      }
    ]
  }
]