CVE-2022-2073: Getgrav/grav Code Injection Vulnerability

HIGH
Advisory Identifier: GHSA-cxgw-r5jg-7xwq
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CVSS 7.2
CWE-94
Published
Advisory Summary

CVE-2022-2073 is a HIGH (CVSS 7.2) code injection vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Getgrav/grav libraries in the Packagist ecosystem. The issue involves code injection in grav. Remediation is available by upgrading affected packages to version 1.7.34.

CVE-2022-2073 at a Glance

CVE Identifier CVE-2022-2073
GHSA Identifier GHSA-cxgw-r5jg-7xwq
Severity HIGH
CVSS v3.1 Base Score 7.2
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Getgrav/grav
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-2073

To remediate this vulnerability, upgrade all affected Getgrav/grav dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

getgrav/grav fixed: 1.7.34 
Upgrade getgrav/grav to 1.7.34
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for getgrav/grav

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-2073, inspect your project dependencies for Getgrav/grav:

inspect dependencies for getgrav/grav

Analyze the terminal output to locate any version of Getgrav/grav in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.7.34), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Getgrav/grav, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Grav is vulnerable to Server Side Template Injection via Twig. According to a previous vulnerability report, Twig should not render dangerous functions by default, such as system.

CVE-2022-2073 Affected Getgrav/grav Versions

1 component(s)
Fixed Versions:
1.7.34
Product / Package Ecosystem Affected Versions Fixed Version
getgrav/grav
 Packagist
< 1.7.34
1.7.34

References

NVD — CVE-2022-2073 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-2073
Security Fix Commit FIX COMMIT
https://github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83
Getgrav/grav Source Repository REPOSITORY
https://github.com/getgrav/grav
huntr.dev/bounties/3ef640e6-9... WEB
https://huntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66

Frequently Asked Questions

What is CVE-2022-2073?
CVE-2022-2073 is a security vulnerability in Getgrav/grav involving Code injection in grav under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Getgrav/grav versions are affected?
Affected versions include releases prior to 1.7.34 across affected packages: getgrav/grav.
What version fixes CVE-2022-2073?
Upgrading to 1.7.34 (or the latest patched release for your respective branch) resolves the vulnerability.
Is getgrav/grav affected?
Yes, getgrav/grav is affected in releases prior to 1.7.34. Upgrade your dependency to 1.7.34 or later.
What is the CVSS score of CVE-2022-2073?
CVE-2022-2073 has a CVSS v3.1 base score of 7.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-2073?
CVE-2022-2073 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check Packagist dependencies for CVE-2022-2073?
Run the dependency tree command: 'inspect dependencies for getgrav/grav'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-cxgw-r5jg-7xwq",
  "modified" : "2022-07-11T19:27:57Z",
  "published" : "2022-06-30T00:00:29Z",
  "aliases" : [ "CVE-2022-2073" ],
  "summary" : "Code injection in grav",
  "details" : "Grav is vulnerable to Server Side Template Injection via Twig. According to a previous vulnerability report, Twig should not render dangerous functions by default, such as system.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "getgrav/grav"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.7.34"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-2073"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/getgrav/grav/commit/9d6a2dba09fd4e56f5cdfb9a399caea355bfeb83"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/getgrav/grav"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/3ef640e6-9e25-4ecb-8ec1-64311d63fe66"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-07-05T22:13:18Z",
    "nvd_published_at" : "2022-06-29T19:15:00Z"
  }
}