Vulnerability-Lookup

ubuntu-cve-2021-36222

Vulnerability from osv_ubuntu

Published

2021-07-22 18:15

Modified

2026-04-22 07:40

Summary

Details

ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation.

Severity

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-36222	REPORT
	https://ubuntu.com/security/notices/USN-5959-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2021-36222	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-kdc",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-kpropd",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-locales",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-multidev",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-otp",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-user",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libgssrpc4",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libk5crypto3",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkadm5clnt-mit11",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkadm5srv-mit11",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkdb5-9",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkrad0",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkrb5-3",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkrb5support0",
            "binary_version": "1.16-2ubuntu0.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "krb5",
        "purl": "pkg:deb/ubuntu/krb5@1.16-2ubuntu0.4?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.16-2ubuntu0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.15.1-2",
        "1.16-2",
        "1.16-2build1",
        "1.16-2ubuntu0.1",
        "1.16-2ubuntu0.2",
        "1.16-2ubuntu0.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-kdc",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-kpropd",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-locales",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-multidev",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-otp",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-user",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libgssrpc4",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libk5crypto3",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkadm5clnt-mit11",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkadm5srv-mit11",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkdb5-9",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkrad0",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkrb5-3",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkrb5support0",
            "binary_version": "1.17-6ubuntu4.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "krb5",
        "purl": "pkg:deb/ubuntu/krb5@1.17-6ubuntu4.3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.17-6ubuntu4.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.17-6",
        "1.17-6ubuntu3",
        "1.17-6ubuntu4",
        "1.17-6ubuntu4.1",
        "1.17-6ubuntu4.2"
      ]
    }
  ],
  "aliases": [],
  "details": "ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation.",
  "id": "UBUNTU-CVE-2021-36222",
  "modified": "2026-04-22T07:40:06Z",
  "published": "2021-07-22T18:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-36222"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5959-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-36222"
    }
  ],
  "related": [
    "USN-5959-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-36222"
  ]
}

CVE-2021-36222 (GCVE-0-2021-36222)

Vulnerability from cvelistv5 – Published: 2021-07-22 17:28 – Updated: 2024-08-04 00:54

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre

References

7 references

URL	Tags
https://web.mit.edu/kerberos/advisories/	x_refsource_MISC
https://github.com/krb5/krb5/releases	x_refsource_MISC
https://www.debian.org/security/2021/dsa-4944	vendor-advisoryx_refsource_DEBIAN
https://www.oracle.com/security-alerts/cpuoct2021.html	x_refsource_MISC
https://github.com/krb5/krb5/commit/fc98f520caeff…	x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-2021102…	x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-2021110…	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:54:51.338Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://web.mit.edu/kerberos/advisories/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/krb5/krb5/releases"
          },
          {
            "name": "DSA-4944",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4944"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20211022-0003/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20211104-0007/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-11-04T08:06:53.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://web.mit.edu/kerberos/advisories/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/krb5/krb5/releases"
        },
        {
          "name": "DSA-4944",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2021/dsa-4944"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20211022-0003/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20211104-0007/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-36222",
          "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": "ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://web.mit.edu/kerberos/advisories/",
              "refsource": "MISC",
              "url": "https://web.mit.edu/kerberos/advisories/"
            },
            {
              "name": "https://github.com/krb5/krb5/releases",
              "refsource": "MISC",
              "url": "https://github.com/krb5/krb5/releases"
            },
            {
              "name": "DSA-4944",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2021/dsa-4944"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
            },
            {
              "name": "https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562",
              "refsource": "CONFIRM",
              "url": "https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20211022-0003/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20211022-0003/"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20211104-0007/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20211104-0007/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-36222",
    "datePublished": "2021-07-22T17:28:47.000Z",
    "dateReserved": "2021-07-07T00:00:00.000Z",
    "dateUpdated": "2024-08-04T00:54:51.338Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

usn-5959-1

Vulnerability from osv_ubuntu

Published

2023-03-16 07:06

Modified

2026-04-22 07:37

Summary

krb5 vulnerabilities

Details

It was discovered that Kerberos incorrectly handled memory when processing KDC data, which could lead to a NULL pointer dereference. An attacker could possibly use this issue to cause a denial of service or have other unspecified impacts. (CVE-2021-36222, CVE-2021-37750)

References

URL

Type

	https://ubuntu.com/security/notices/USN-5959-1	ADVISORY
	https://ubuntu.com/security/CVE-2021-36222	REPORT
	https://ubuntu.com/security/CVE-2021-37750	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-36222",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-37750",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-kdc",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-kpropd",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-locales",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-multidev",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-otp",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "krb5-user",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libgssrpc4",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libk5crypto3",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkadm5clnt-mit11",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkadm5srv-mit11",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkdb5-9",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkrad0",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkrb5-3",
            "binary_version": "1.16-2ubuntu0.4"
          },
          {
            "binary_name": "libkrb5support0",
            "binary_version": "1.16-2ubuntu0.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "krb5",
        "purl": "pkg:deb/ubuntu/krb5@1.16-2ubuntu0.4?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.16-2ubuntu0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.15.1-2",
        "1.16-2",
        "1.16-2build1",
        "1.16-2ubuntu0.1",
        "1.16-2ubuntu0.2",
        "1.16-2ubuntu0.3"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-36222",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-37750",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-kdc",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-kpropd",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-locales",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-multidev",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-otp",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "krb5-user",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libgssrpc4",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libk5crypto3",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkadm5clnt-mit11",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkadm5srv-mit11",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkdb5-9",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkrad0",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkrb5-3",
            "binary_version": "1.17-6ubuntu4.3"
          },
          {
            "binary_name": "libkrb5support0",
            "binary_version": "1.17-6ubuntu4.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "krb5",
        "purl": "pkg:deb/ubuntu/krb5@1.17-6ubuntu4.3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.17-6ubuntu4.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.17-6",
        "1.17-6ubuntu3",
        "1.17-6ubuntu4",
        "1.17-6ubuntu4.1",
        "1.17-6ubuntu4.2"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Kerberos incorrectly handled memory when processing\nKDC data, which could lead to a NULL pointer dereference. An attacker could\npossibly use this issue to cause a denial of service or have other\nunspecified impacts. (CVE-2021-36222, CVE-2021-37750)\n",
  "id": "USN-5959-1",
  "modified": "2026-04-22T07:37:04Z",
  "published": "2023-03-16T07:06:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5959-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-36222"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-37750"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "krb5 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-36222",
    "UBUNTU-CVE-2021-37750"
  ]
}

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.

Action not permitted

ubuntu-cve-2021-36222

Vulnerability from osv_ubuntu

CVE-2021-36222 (GCVE-0-2021-36222)

usn-5959-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature