gsd-2023-22490
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim's filesystem within the malicious repository's working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253. A fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5 v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`. Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it does not contain suspicious module URLs.
Aliases
Aliases
CVE-2023-22490


To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-22490",
    "id": "GSD-2023-22490",
    "references": [
      "https://www.debian.org/security/2023/dsa-5357",
      "https://advisories.mageia.org/CVE-2023-22490.html",
      "https://www.suse.com/security/cve/CVE-2023-22490.html",
      "https://ubuntu.com/security/CVE-2023-22490",
      "https://alas.aws.amazon.com/cve/html/CVE-2023-22490.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-22490"
      ],
      "details": "Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim\u0027s filesystem within the malicious repository\u0027s working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253. A fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5 v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`. Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it does not contain suspicious module URLs.",
      "id": "GSD-2023-22490",
      "modified": "2023-12-13T01:20:42.983676Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2023-22490",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "git",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 2.39.0, \u003c 2.39.2"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 2.38.0, \u003c 2.38.4"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 2.37.0, \u003c 2.37.6"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 2.36.0, \u003c 2.36.5"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 2.35.0, \u003c 2.35.7"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 2.34.0, \u003c 2.34.7"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 2.33.0, \u003c 2.33.7"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 2.32.0, \u003c 2.32.6"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 2.31.0, \u003c 2.31.7"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003c 2.30.8"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "git"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim\u0027s filesystem within the malicious repository\u0027s working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253.\n\nA fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5 v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`. Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it does not contain suspicious module URLs."
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-59",
                "lang": "eng",
                "value": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/git/git/security/advisories/GHSA-gw92-x3fm-3g3q",
            "refsource": "MISC",
            "url": "https://github.com/git/git/security/advisories/GHSA-gw92-x3fm-3g3q"
          },
          {
            "name": "https://github.com/git/git/security/advisories/GHSA-3wp6-j8xr-qw85",
            "refsource": "MISC",
            "url": "https://github.com/git/git/security/advisories/GHSA-3wp6-j8xr-qw85"
          },
          {
            "name": "https://github.com/git/git/commit/c867e4fa180bec4750e9b54eb10f459030dbebfd",
            "refsource": "MISC",
            "url": "https://github.com/git/git/commit/c867e4fa180bec4750e9b54eb10f459030dbebfd"
          },
          {
            "name": "https://security.gentoo.org/glsa/202312-15",
            "refsource": "MISC",
            "url": "https://security.gentoo.org/glsa/202312-15"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-gw92-x3fm-3g3q",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A79D6A15-AE40-4F6C-AA1F-87C902373343",
                    "versionEndExcluding": "2.30.8",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D60B37A3-4B8C-4BC2-95E9-5E63EDAEBA3A",
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                  },
                  {
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                  },
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                  },
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                    "versionEndExcluding": "2.35.7",
                    "versionStartIncluding": "2.35.0",
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                  },
                  {
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                    "versionEndExcluding": "2.36.5",
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                  },
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                    "versionStartIncluding": "2.39.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "descriptions": [
          {
            "lang": "en",
            "value": "Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim\u0027s filesystem within the malicious repository\u0027s working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253.\n\nA fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5 v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`. Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it does not contain suspicious module URLs."
          }
        ],
        "id": "CVE-2023-22490",
        "lastModified": "2023-12-27T10:15:38.107",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2023-02-14T20:15:16.683",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch"
            ],
            "url": "https://github.com/git/git/commit/c867e4fa180bec4750e9b54eb10f459030dbebfd"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://github.com/git/git/security/advisories/GHSA-3wp6-j8xr-qw85"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://github.com/git/git/security/advisories/GHSA-gw92-x3fm-3g3q"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://security.gentoo.org/glsa/202312-15"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-59"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-59"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    }
  }
}


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  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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