CVE-2021-29923 (GCVE-0-2021-29923)
Vulnerability from cvelistv5
Published
2021-08-07 16:38
Modified
2024-08-03 22:18
Severity ?
CWE
  • n/a
Summary
Go before 1.17 does not properly consider extraneous zero characters at the beginning of an IP address octet, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation. This affects net.ParseIP and net.ParseCIDR.
References
cve@mitre.org https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis Third Party Advisory
cve@mitre.org https://github.com/golang/go/issues/30999 Exploit, Issue Tracking, Third Party Advisory
cve@mitre.org https://github.com/golang/go/issues/43389 Issue Tracking, Third Party Advisory
cve@mitre.org https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-016.md Exploit, Third Party Advisory
cve@mitre.org https://go-review.googlesource.com/c/go/+/325829/ Patch, Third Party Advisory
cve@mitre.org https://golang.org/pkg/net/#ParseCIDR Vendor Advisory
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM/
cve@mitre.org https://security.gentoo.org/glsa/202208-02 Third Party Advisory
cve@mitre.org https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/golang/go/issues/30999 Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/golang/go/issues/43389 Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-016.md Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://go-review.googlesource.com/c/go/+/325829/ Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://golang.org/pkg/net/#ParseCIDR Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM/
af854a3a-2127-422b-91ae-364da2661108 https://security.gentoo.org/glsa/202208-02 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T22:18:03.455Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://golang.org/pkg/net/#ParseCIDR"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/golang/go/issues/43389"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/golang/go/issues/30999"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://go-review.googlesource.com/c/go/+/325829/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-016.md"
          },
          {
            "name": "FEDORA-2022-17d004ed71",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM/"
          },
          {
            "name": "GLSA-202208-02",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202208-02"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Go before 1.17 does not properly consider extraneous zero characters at the beginning of an IP address octet, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation. This affects net.ParseIP and net.ParseCIDR."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-08-04T15:09:33",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://golang.org/pkg/net/#ParseCIDR"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/golang/go/issues/43389"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/golang/go/issues/30999"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://go-review.googlesource.com/c/go/+/325829/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-016.md"
        },
        {
          "name": "FEDORA-2022-17d004ed71",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM/"
        },
        {
          "name": "GLSA-202208-02",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202208-02"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-29923",
          "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": "Go before 1.17 does not properly consider extraneous zero characters at the beginning of an IP address octet, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation. This affects net.ParseIP and net.ParseCIDR."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://golang.org/pkg/net/#ParseCIDR",
              "refsource": "MISC",
              "url": "https://golang.org/pkg/net/#ParseCIDR"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujan2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
            },
            {
              "name": "https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis",
              "refsource": "MISC",
              "url": "https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis"
            },
            {
              "name": "https://github.com/golang/go/issues/43389",
              "refsource": "MISC",
              "url": "https://github.com/golang/go/issues/43389"
            },
            {
              "name": "https://github.com/golang/go/issues/30999",
              "refsource": "MISC",
              "url": "https://github.com/golang/go/issues/30999"
            },
            {
              "name": "https://go-review.googlesource.com/c/go/+/325829/",
              "refsource": "MISC",
              "url": "https://go-review.googlesource.com/c/go/+/325829/"
            },
            {
              "name": "https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-016.md",
              "refsource": "MISC",
              "url": "https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-016.md"
            },
            {
              "name": "FEDORA-2022-17d004ed71",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM/"
            },
            {
              "name": "GLSA-202208-02",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202208-02"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-29923",
    "datePublished": "2021-08-07T16:38:59",
    "dateReserved": "2021-04-01T00:00:00",
    "dateUpdated": "2024-08-03T22:18:03.455Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-29923\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-08-07T17:15:07.067\",\"lastModified\":\"2024-11-21T06:01:59.570\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Go before 1.17 does not properly consider extraneous zero characters at the beginning of an IP address octet, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation. This affects net.ParseIP and net.ParseCIDR.\"},{\"lang\":\"es\",\"value\":\"Go versiones anteriores a 1.17, no considera apropiadamente los caracteres cero extra\u00f1os al principio de un octeto de direcci\u00f3n IP, lo que (en algunas situaciones) permite a atacantes omitir el control de acceso que es basado en las direcciones IP, debido a una interpretaci\u00f3n octal inesperada. Esto afecta a net.ParseIP y net.ParseCIDR\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:P/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.17\",\"matchCriteriaId\":\"D39D5C21-8281-429F-AC33-CE39821CA3EC\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:timesten_in-memory_database:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"21.1.1.1.0\",\"matchCriteriaId\":\"20290BBC-E3C9-4B96-94FE-2DFADD4BF1F1\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD\"}]}]}],\"references\":[{\"url\":\"https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/golang/go/issues/30999\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/golang/go/issues/43389\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-016.md\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://go-review.googlesource.com/c/go/+/325829/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://golang.org/pkg/net/#ParseCIDR\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.gentoo.org/glsa/202208-02\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujan2022.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://defcon.org/html/defcon-29/dc-29-speakers.html#kaoudis\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/golang/go/issues/30999\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/golang/go/issues/43389\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-016.md\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://go-review.googlesource.com/c/go/+/325829/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://golang.org/pkg/net/#ParseCIDR\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.gentoo.org/glsa/202208-02\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujan2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.