gsd-2021-43795
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Armeria is an open source microservice framework. In affected versions an attacker can access an Armeria server's local file system beyond its restricted directory by sending an HTTP request whose path contains `%2F` (encoded `/`), such as `/files/..%2Fsecrets.txt`, bypassing Armeria's path validation logic. Armeria 1.13.4 or above contains the hardened path validation logic that handles `%2F` properly. This vulnerability can be worked around by inserting a decorator that performs an additional validation on the request path.
Aliases
Aliases
CVE-2021-43795


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-43795",
    "description": "Armeria is an open source microservice framework. In affected versions an attacker can access an Armeria server\u0027s local file system beyond its restricted directory by sending an HTTP request whose path contains `%2F` (encoded `/`), such as `/files/..%2Fsecrets.txt`, bypassing Armeria\u0027s path validation logic. Armeria 1.13.4 or above contains the hardened path validation logic that handles `%2F` properly. This vulnerability can be worked around by inserting a decorator that performs an additional validation on the request path.",
    "id": "GSD-2021-43795"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-43795"
      ],
      "details": "Armeria is an open source microservice framework. In affected versions an attacker can access an Armeria server\u0027s local file system beyond its restricted directory by sending an HTTP request whose path contains `%2F` (encoded `/`), such as `/files/..%2Fsecrets.txt`, bypassing Armeria\u0027s path validation logic. Armeria 1.13.4 or above contains the hardened path validation logic that handles `%2F` properly. This vulnerability can be worked around by inserting a decorator that performs an additional validation on the request path.",
      "id": "GSD-2021-43795",
      "modified": "2023-12-13T01:23:26.708944Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-43795",
        "STATE": "PUBLIC",
        "TITLE": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027) in com.linecorp.armeria:armeria"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "armeria",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 1.13.4"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "line"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Armeria is an open source microservice framework. In affected versions an attacker can access an Armeria server\u0027s local file system beyond its restricted directory by sending an HTTP request whose path contains `%2F` (encoded `/`), such as `/files/..%2Fsecrets.txt`, bypassing Armeria\u0027s path validation logic. Armeria 1.13.4 or above contains the hardened path validation logic that handles `%2F` properly. This vulnerability can be worked around by inserting a decorator that performs an additional validation on the request path."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv",
            "refsource": "CONFIRM",
            "url": "https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv"
          },
          {
            "name": "https://github.com/line/armeria/pull/3855",
            "refsource": "MISC",
            "url": "https://github.com/line/armeria/pull/3855"
          },
          {
            "name": "https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284",
            "refsource": "MISC",
            "url": "https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-8fp4-rp6c-5gcv",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "[1.12.0,1.13.4)",
          "affected_versions": "All versions starting from 1.12.0 before 1.13.4",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-22",
            "CWE-937"
          ],
          "date": "2021-12-03",
          "description": "Armeria is an open source microservice framework. In affected versions an attacker can access an Armeria server\u0027s local file system beyond its restricted directory by sending an HTTP request whose path contains `%2F` (encoded `/`), such as `/files/..%2Fsecrets.txt`, bypassing Armeria\u0027s path validation logic. Armeria 1.13.4 or above contains the hardened path validation logic that handles `%2F` properly. This vulnerability can be worked around by inserting a decorator that performs an additional validation on the request path.",
          "fixed_versions": [
            "1.13.4"
          ],
          "identifier": "CVE-2021-43795",
          "identifiers": [
            "GHSA-8fp4-rp6c-5gcv",
            "CVE-2021-43795"
          ],
          "not_impacted": "All versions before 1.12.0, all versions starting from 1.13.4",
          "package_slug": "maven/com.linecorp.armeria/armeria",
          "pubdate": "2021-12-02",
          "solution": "Upgrade to version 1.13.4 or above.",
          "title": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
          "urls": [
            "https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv",
            "https://github.com/line/armeria/pull/3855",
            "https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284",
            "https://nvd.nist.gov/vuln/detail/CVE-2021-43795",
            "https://github.com/advisories/GHSA-8fp4-rp6c-5gcv"
          ],
          "uuid": "236abb37-a211-45a8-95be-93f230893f64"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:linecorp:armeria:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.13.4",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-43795"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Armeria is an open source microservice framework. In affected versions an attacker can access an Armeria server\u0027s local file system beyond its restricted directory by sending an HTTP request whose path contains `%2F` (encoded `/`), such as `/files/..%2Fsecrets.txt`, bypassing Armeria\u0027s path validation logic. Armeria 1.13.4 or above contains the hardened path validation logic that handles `%2F` properly. This vulnerability can be worked around by inserting a decorator that performs an additional validation on the request path."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-22"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/line/armeria/pull/3855",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://github.com/line/armeria/pull/3855"
            },
            {
              "name": "https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284"
            },
            {
              "name": "https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-12-06T18:24Z",
      "publishedDate": "2021-12-02T18:15Z"
    }
  }
}


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