Vulnerability-Lookup

CNVD-2021-33241

Vulnerability from cnvd - Published: 2021-05-08

Title

Grav代码注入漏洞

Description

Grav是一套可扩展的用于个人博客、小型内容发布平台和单页产品展示的CMS（内容管理系统）。 Grav存在代码注入漏洞，攻击者可利用该漏洞任意代码执行和提升实例上的特权。

Severity

中

Patch Name

Grav代码注入漏洞的补丁

Patch Description

Grav是一套可扩展的用于个人博客、小型内容发布平台和单页产品展示的CMS（内容管理系统）。 Grav存在代码注入漏洞，攻击者可利用该漏洞任意代码执行和提升实例上的特权。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接：https://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxc

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-29440

Impacted products

Name
Grav Grav <1.7.11

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-29440",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-29440"
    }
  },
  "description": "Grav\u662f\u4e00\u5957\u53ef\u6269\u5c55\u7684\u7528\u4e8e\u4e2a\u4eba\u535a\u5ba2\u3001\u5c0f\u578b\u5185\u5bb9\u53d1\u5e03\u5e73\u53f0\u548c\u5355\u9875\u4ea7\u54c1\u5c55\u793a\u7684CMS\uff08\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf\uff09\u3002\n\nGrav\u5b58\u5728\u4ee3\u7801\u6ce8\u5165\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4efb\u610f\u4ee3\u7801\u6267\u884c\u548c\u63d0\u5347\u5b9e\u4f8b\u4e0a\u7684\u7279\u6743\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1ahttps://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxc",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-33241",
  "openTime": "2021-05-08",
  "patchDescription": "Grav\u662f\u4e00\u5957\u53ef\u6269\u5c55\u7684\u7528\u4e8e\u4e2a\u4eba\u535a\u5ba2\u3001\u5c0f\u578b\u5185\u5bb9\u53d1\u5e03\u5e73\u53f0\u548c\u5355\u9875\u4ea7\u54c1\u5c55\u793a\u7684CMS\uff08\u5185\u5bb9\u7ba1\u7406\u7cfb\u7edf\uff09\u3002\r\n\r\nGrav\u5b58\u5728\u4ee3\u7801\u6ce8\u5165\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4efb\u610f\u4ee3\u7801\u6267\u884c\u548c\u63d0\u5347\u5b9e\u4f8b\u4e0a\u7684\u7279\u6743\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Grav\u4ee3\u7801\u6ce8\u5165\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Grav Grav \u003c1.7.11"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-29440",
  "serverity": "\u4e2d",
  "submitTime": "2021-05-06",
  "title": "Grav\u4ee3\u7801\u6ce8\u5165\u6f0f\u6d1e"
}

CVE-2021-29440 (GCVE-0-2021-29440)

Vulnerability from cvelistv5 – Published: 2021-04-13 19:55 – Updated: 2024-08-03 22:02

Title

Twig allowing dangerous PHP functions by default

Summary

Grav is a file based Web-platform. 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. The issue was addressed in version 1.7.11.

Severity

8.4 (High)


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

CWE

CWE-94 - {"CWE-94":"Improper Control of Generation of Code ('Code Injection')"}

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/getgrav/grav/security/advisori…	x_refsource_CONFIRM
https://packagist.org/packages/getgrav/grav	x_refsource_MISC
http://packetstormsecurity.com/files/162987/Grav-…	x_refsource_MISC
https://blog.sonarsource.com/grav-cms-code-execut…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
getgrav	grav	Affected: < 1.7.11

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T22:02:51.882Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxc"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://packagist.org/packages/getgrav/grav"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/162987/Grav-CMS-1.7.10-Server-Side-Template-Injection.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://blog.sonarsource.com/grav-cms-code-execution-vulnerabilities"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "grav",
          "vendor": "getgrav",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.7.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Grav is a file based Web-platform. 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. The issue was addressed in version 1.7.11."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "{\"CWE-94\":\"Improper Control of Generation of Code (\u0027Code Injection\u0027)\"}",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-08-02T15:09:46.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxc"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://packagist.org/packages/getgrav/grav"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://packetstormsecurity.com/files/162987/Grav-CMS-1.7.10-Server-Side-Template-Injection.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://blog.sonarsource.com/grav-cms-code-execution-vulnerabilities"
        }
      ],
      "source": {
        "advisory": "GHSA-g8r4-p96j-xfxc",
        "discovery": "UNKNOWN"
      },
      "title": "Twig allowing dangerous PHP functions by default",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-29440",
          "STATE": "PUBLIC",
          "TITLE": "Twig allowing dangerous PHP functions by default"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "grav",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 1.7.11"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "getgrav"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Grav is a file based Web-platform. 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. The issue was addressed in version 1.7.11."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "{\"CWE-94\":\"Improper Control of Generation of Code (\u0027Code Injection\u0027)\"}"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxc",
              "refsource": "CONFIRM",
              "url": "https://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxc"
            },
            {
              "name": "https://packagist.org/packages/getgrav/grav",
              "refsource": "MISC",
              "url": "https://packagist.org/packages/getgrav/grav"
            },
            {
              "name": "http://packetstormsecurity.com/files/162987/Grav-CMS-1.7.10-Server-Side-Template-Injection.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/162987/Grav-CMS-1.7.10-Server-Side-Template-Injection.html"
            },
            {
              "name": "https://blog.sonarsource.com/grav-cms-code-execution-vulnerabilities",
              "refsource": "MISC",
              "url": "https://blog.sonarsource.com/grav-cms-code-execution-vulnerabilities"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-g8r4-p96j-xfxc",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-29440",
    "datePublished": "2021-04-13T19:55:13.000Z",
    "dateReserved": "2021-03-30T00:00:00.000Z",
    "dateUpdated": "2024-08-03T22:02:51.882Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CNVD-2021-33241

CVE-2021-29440 (GCVE-0-2021-29440)

Tags

Sightings

Nomenclature

Related by attack behaviour