GSD-2020-16844

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.
Aliases
Aliases
CVE-2020-16844
To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-16844",
    "description": "In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.",
    "id": "GSD-2020-16844",
    "references": [
      "https://access.redhat.com/errata/RHSA-2020:3425"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-16844"
      ],
      "details": "In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.",
      "id": "GSD-2020-16844",
      "modified": "2023-12-13T01:21:46.337637Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2020-16844",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/istio/istio/releases",
            "refsource": "MISC",
            "url": "https://github.com/istio/istio/releases"
          },
          {
            "name": "https://istio.io/latest/news/security/istio-security-2020-009/",
            "refsource": "CONFIRM",
            "url": "https://istio.io/latest/news/security/istio-security-2020-009/"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003e=v1.5.0 \u003c=v1.5.8 || \u003e=v1.6.0 \u003c=v1.6.7",
          "affected_versions": "All versions starting from 1.5.0 up to 1.5.8, all versions starting from 1.6.0 up to 1.6.7",
          "cvss_v2": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2020-10-15",
          "description": "In Istio, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (`e.g.`, `*-some-suffix`) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.",
          "fixed_versions": [
            "v1.6.8"
          ],
          "identifier": "CVE-2020-16844",
          "identifiers": [
            "CVE-2020-16844"
          ],
          "not_impacted": "All versions after 1.5.8 before 1.6.0, all versions after 1.6.7",
          "package_slug": "go/github.com/istio/istio",
          "pubdate": "2020-10-01",
          "solution": "Upgrade to version 1.6.8 or above.",
          "title": "Improper Authentication",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-16844",
            "https://github.com/istio/istio/releases",
            "https://istio.io/latest/news/security/istio-security-2020-009/"
          ],
          "uuid": "9fd7629a-5786-4241-84ce-2bc05cc46018",
          "versions": [
            {
              "commit": {
                "sha": "0aa646d7e3061ebbe650817dda4b393682ba2782",
                "tags": [
                  "1.5.0"
                ],
                "timestamp": "20200304114959"
              },
              "number": "v1.5.0"
            },
            {
              "commit": {
                "sha": "32eafc7f3e112f66d7ab362c54b4854c2ed3b61a",
                "tags": [
                  "1.6.0"
                ],
                "timestamp": "20200518170651"
              },
              "number": "v1.6.0"
            },
            {
              "commit": {
                "sha": "523820ea359b4e3db0259ab5c33a0258044ae9cd",
                "tags": [
                  "1.5.8"
                ],
                "timestamp": "20200708165503"
              },
              "number": "v1.5.8"
            },
            {
              "commit": {
                "sha": "3930ead45c631342abd462f09648f4144eacf32c",
                "tags": [
                  "1.6.7"
                ],
                "timestamp": "20200730204136"
              },
              "number": "v1.6.7"
            }
          ]
        },
        {
          "affected_range": "\u003e=1.5.0 \u003c1.5.9||\u003e=1.6.0 \u003c1.6.8",
          "affected_versions": "All versions starting from 1.5.0 before 1.5.9, all versions starting from 1.6.0 before 1.6.8",
          "cvss_v2": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2022-04-20",
          "description": "In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.",
          "fixed_versions": [
            "1.5.9",
            "1.6.8"
          ],
          "identifier": "CVE-2020-16844",
          "identifiers": [
            "GHSA-82mm-ffjr-h86c",
            "CVE-2020-16844"
          ],
          "not_impacted": "All versions before 1.5.0, all versions starting from 1.5.9 before 1.6.0, all versions starting from 1.6.8",
          "package_slug": "go/istio.io/istio",
          "pubdate": "2022-02-15",
          "solution": "Upgrade to versions 1.5.9, 1.6.8 or above.",
          "title": "Authorization bypass in Istio",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-16844",
            "https://github.com/istio/istio/commit/4c73414556b83f0e75c1b3a0a89a23103a71573c",
            "https://github.com/istio/istio/commit/72d2e135374f421b656d6f1a21f474db46134ace",
            "https://github.com/istio/istio/releases",
            "https://github.com/istio/istio/releases/tag/1.5.9",
            "https://github.com/istio/istio/releases/tag/1.6.8",
            "https://istio.io/latest/news/releases/1.5.x/announcing-1.5.9/",
            "https://istio.io/latest/news/releases/1.6.x/announcing-1.6.8/",
            "https://istio.io/latest/news/security/istio-security-2020-009/",
            "https://github.com/advisories/GHSA-82mm-ffjr-h86c"
          ],
          "uuid": "fac520b4-40c1-4e4c-acb0-b558875959bb"
        },
        {
          "affected_range": "\u003e=1.5.0 \u003c1.5.9||\u003e=1.6.0 \u003c1.6.8",
          "affected_versions": "All versions starting from 1.5.0 before 1.5.9, all versions starting from 1.6.0 before 1.6.8",
          "cvss_v2": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2022-04-20",
          "description": "In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.",
          "fixed_versions": [
            "1.5.9",
            "1.6.8"
          ],
          "identifier": "CVE-2020-16844",
          "identifiers": [
            "GHSA-82mm-ffjr-h86c",
            "CVE-2020-16844"
          ],
          "not_impacted": "All versions before 1.5.0, all versions starting from 1.5.9 before 1.6.0, all versions starting from 1.6.8",
          "package_slug": "go/istio.io/istio/pilot/pkg/security/authz/model/matcher",
          "pubdate": "2022-02-15",
          "solution": "Upgrade to versions 1.5.9, 1.6.8 or above.",
          "title": "Authorization bypass in Istio",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-16844",
            "https://github.com/istio/istio/commit/4c73414556b83f0e75c1b3a0a89a23103a71573c",
            "https://github.com/istio/istio/commit/72d2e135374f421b656d6f1a21f474db46134ace",
            "https://github.com/istio/istio/releases",
            "https://github.com/istio/istio/releases/tag/1.5.9",
            "https://github.com/istio/istio/releases/tag/1.6.8",
            "https://istio.io/latest/news/releases/1.5.x/announcing-1.5.9/",
            "https://istio.io/latest/news/releases/1.6.x/announcing-1.6.8/",
            "https://istio.io/latest/news/security/istio-security-2020-009/",
            "https://github.com/advisories/GHSA-82mm-ffjr-h86c"
          ],
          "uuid": "90fd42be-30c3-40ca-b63f-de53a9c19e74"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "1.5.8",
                "versionStartIncluding": "1.5.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "1.6.7",
                "versionStartIncluding": "1.6.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-16844"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "NVD-CWE-noinfo"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://istio.io/latest/news/security/istio-security-2020-009/",
              "refsource": "CONFIRM",
              "tags": [
                "Exploit",
                "Mitigation",
                "Vendor Advisory"
              ],
              "url": "https://istio.io/latest/news/security/istio-security-2020-009/"
            },
            {
              "name": "https://github.com/istio/istio/releases",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://github.com/istio/istio/releases"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 4.9,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 6.8,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 1.6,
          "impactScore": 5.2
        }
      },
      "lastModifiedDate": "2020-10-15T17:31Z",
      "publishedDate": "2020-10-01T17:15Z"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



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.