Vulnerability-Lookup

CVE-2023-52892 (GCVE-0-2023-52892)

Vulnerability from cvelistv5 – Published: 2024-06-27 00:00 – Updated: 2024-08-21 20:02

Summary

In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-21 19:54 UTC

CWE

n/a
CWE-436 - Interpretation Conflict

Assigner

mitre CNA under the mitre root

CNA scorecard E 27/100 over 2305 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/phpseclib/phpseclib/issues/1943
https://github.com/phpseclib/phpseclib/releases/t…
https://github.com/phpseclib/phpseclib/commit/6cd…
https://github.com/x509-name-testing/name_testing…

Impacted products

1 product

Vendor	Product	Version	CPE status
phpseclib	phpseclib	Affected: 0 , < 1.0.22 (custom) Affected: 2.0 , < 2.0.46 (custom) Affected: 3.0 , < 3.0.33 (custom) cpe:2.3:a:phpseclib:phpseclib::::::::

Show details on NVD website

JSON

To clipboard

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              "url": "https://github.com/phpseclib/phpseclib/issues/1943"
            },
            {
              "url": "https://github.com/phpseclib/phpseclib/releases/tag/3.0.33"
            },
            {
              "url": "https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"
            },
            {
              "url": "https://github.com/x509-name-testing/name_testing_artifacts"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "cveId": "CVE-2023-52892",
        "datePublished": "2024-06-27T00:00:00.000Z",
        "dateReserved": "2024-06-27T00:00:00.000Z",
        "dateUpdated": "2024-08-21T20:02:23.834Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

FKIE_CVE-2023-52892

Vulnerability from fkie_nvd - Published: 2024-06-27 22:15 - Updated: 2026-06-17 06:43

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

References

URL	Tags
cve@mitre.org	https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627	Patch
cve@mitre.org	https://github.com/phpseclib/phpseclib/issues/1943	Exploit, Issue Tracking
cve@mitre.org	https://github.com/phpseclib/phpseclib/releases/tag/3.0.33	Release Notes
cve@mitre.org	https://github.com/x509-name-testing/name_testing_artifacts	Not Applicable
af854a3a-2127-422b-91ae-364da2661108	https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627	Patch
af854a3a-2127-422b-91ae-364da2661108	https://github.com/phpseclib/phpseclib/issues/1943	Exploit, Issue Tracking
af854a3a-2127-422b-91ae-364da2661108	https://github.com/phpseclib/phpseclib/releases/tag/3.0.33	Release Notes
af854a3a-2127-422b-91ae-364da2661108	https://github.com/x509-name-testing/name_testing_artifacts	Not Applicable

Impacted products

Vendor	Product	Version
phpseclib	phpseclib	*
phpseclib	phpseclib	*
phpseclib	phpseclib	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "phpseclib",
          "vendor": "phpseclib",
          "versions": [
            {
              "lessThan": "1.0.22",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "2.0.46",
              "status": "affected",
              "version": "2.0",
              "versionType": "custom"
            },
            {
              "lessThan": "3.0.33",
              "status": "affected",
              "version": "3.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AC278869-68C8-4B15-9ADE-0B22DCDD2E91",
              "versionEndExcluding": "1.0.22",
              "versionStartIncluding": "1.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B3497E33-6207-4B0D-9E11-71C90048695C",
              "versionEndExcluding": "2.0.46",
              "versionStartIncluding": "2.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:phpseclib:phpseclib:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6A3C5942-8313-4EC1-9333-490EA25E26B2",
              "versionEndExcluding": "3.0.33",
              "versionStartIncluding": "3.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification."
    },
    {
      "lang": "es",
      "value": "En phpseclib anterior a 1.0.22, 2.x anterior a 2.0.46 y 3.x anterior a 3.0.33, se permite incorrectamente que algunos caracteres en los campos Nombre alternativo del sujeto en los certificados TLS tengan un significado especial en expresiones regulares (como + comod\u00edn), lo que genera confusi\u00f3n de nombres en la verificaci\u00f3n del host de certificados X.509."
    }
  ],
  "id": "CVE-2023-52892",
  "lastModified": "2026-06-17T06:43:52.450",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-52892",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-08-21T19:54:11.710267Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-06-27T22:15:10.277",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Issue Tracking"
      ],
      "url": "https://github.com/phpseclib/phpseclib/issues/1943"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/phpseclib/phpseclib/releases/tag/3.0.33"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Not Applicable"
      ],
      "url": "https://github.com/x509-name-testing/name_testing_artifacts"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Issue Tracking"
      ],
      "url": "https://github.com/phpseclib/phpseclib/issues/1943"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/phpseclib/phpseclib/releases/tag/3.0.33"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Not Applicable"
      ],
      "url": "https://github.com/x509-name-testing/name_testing_artifacts"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-436"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

GHSA-FF7Q-6VWH-V9M4

Vulnerability from github – Published: 2024-06-28 00:33 – Updated: 2024-06-28 18:57

Summary

Name confusion in x509 Subject Alternative Name fields

Details

Severity

7.5 (High)


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

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpseclib/phpseclib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.22"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpseclib/phpseclib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.0.46"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "phpseclib/phpseclib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.0.33"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-52892"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-436"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-06-28T18:57:31Z",
    "nvd_published_at": "2024-06-27T22:15:10Z",
    "severity": "HIGH"
  },
  "details": "In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.",
  "id": "GHSA-ff7q-6vwh-v9m4",
  "modified": "2024-06-28T18:57:31Z",
  "published": "2024-06-28T00:33:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52892"
    },
    {
      "type": "WEB",
      "url": "https://github.com/phpseclib/phpseclib/issues/1943"
    },
    {
      "type": "WEB",
      "url": "https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/phpseclib/phpseclib"
    },
    {
      "type": "WEB",
      "url": "https://github.com/phpseclib/phpseclib/releases/tag/3.0.33"
    },
    {
      "type": "WEB",
      "url": "https://github.com/x509-name-testing/name_testing_artifacts"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Name confusion in x509 Subject Alternative Name fields"
}

UBUNTU-CVE-2023-52892 (CVE-2023-52892)

Vulnerability from osv_ubuntu – Published: 2024-06-27 22:15 – Updated: 2026-10-06 20:35 – Source website

Details

Severity

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-52892	REPORT
	https://www.cve.org/CVERecord?id=CVE-2023-52892	REPORT
	https://github.com/phpseclib/phpseclib/commit/6cd…	REPORT
	https://github.com/phpseclib/phpseclib/issues/1943	REPORT
	https://github.com/phpseclib/phpseclib/releases/t…	REPORT
	https://github.com/phpseclib/phpseclib/commit/6cd…	REPORT
	https://github.com/x509-name-testing/name_testing…	REPORT
	https://ubuntu.com/security/notices/USN-7404-1	ADVISORY
	https://ubuntu.com/security/notices/USN-8769-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "php-phpseclib",
            "binary_version": "2.0.1-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "php-phpseclib",
        "purl": "pkg:deb/ubuntu/php-phpseclib@2.0.1-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.1-1ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.1-1",
        "2.0.1-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "php-seclib",
            "binary_version": "1.0.1-3ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "phpseclib",
        "purl": "pkg:deb/ubuntu/phpseclib@1.0.1-3ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.1-3ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.3.10-3",
        "1.0.0-2",
        "1.0.0-3",
        "1.0.1-1",
        "1.0.1-3",
        "1.0.1-3ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "php-phpseclib",
            "binary_version": "2.0.9-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "php-phpseclib",
        "purl": "pkg:deb/ubuntu/php-phpseclib@2.0.9-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.9-1ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.6-1",
        "2.0.7-1",
        "2.0.9-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "php-seclib",
            "binary_version": "1.0.9-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "phpseclib",
        "purl": "pkg:deb/ubuntu/phpseclib@1.0.9-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.9-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.7-1",
        "1.0.8-1",
        "1.0.9-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "php-phpseclib",
            "binary_version": "2.0.23-2ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "php-phpseclib",
        "purl": "pkg:deb/ubuntu/php-phpseclib@2.0.23-2ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.23-2ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.21-2",
        "2.0.23-2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "php-seclib",
            "binary_version": "1.0.18-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "phpseclib",
        "purl": "pkg:deb/ubuntu/phpseclib@1.0.18-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.18-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.16-2",
        "1.0.18-2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "php-seclib",
            "binary_version": "1.0.20-1+deb12u3build0.22.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "phpseclib",
        "purl": "pkg:deb/ubuntu/phpseclib@1.0.20-1+deb12u3build0.22.04.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.20-1+deb12u3build0.22.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.19-3ubuntu2",
        "1.0.19-3ubuntu3",
        "1.0.20-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "php-phpseclib",
            "binary_version": "2.0.36-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "php-phpseclib",
        "purl": "pkg:deb/ubuntu/php-phpseclib@2.0.36-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.36-1ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.30-2ubuntu1",
        "2.0.34-1",
        "2.0.35-1",
        "2.0.36-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "php-phpseclib3",
            "binary_version": "3.0.13-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "php-phpseclib3",
        "purl": "pkg:deb/ubuntu/php-phpseclib3@3.0.13-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.13-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.9-1",
        "3.0.10-1",
        "3.0.12-2",
        "3.0.13-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "php-seclib",
            "binary_version": "1.0.20-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "phpseclib",
        "purl": "pkg:deb/ubuntu/phpseclib@1.0.20-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.20-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.19-3ubuntu2",
        "1.0.19-3ubuntu3",
        "1.0.20-1"
      ]
    }
  ],
  "aliases": [],
  "details": "In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.",
  "id": "UBUNTU-CVE-2023-52892",
  "modified": "2026-10-06T20:35:45Z",
  "published": "2024-06-27T22:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-52892"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-52892"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/phpseclib/phpseclib/issues/1943"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/phpseclib/phpseclib/releases/tag/3.0.33"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/x509-name-testing/name_testing_artifacts"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7404-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8769-1"
    }
  ],
  "related": [
    "USN-7404-1",
    "USN-8769-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-52892"
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2023-52892 (GCVE-0-2023-52892)

FKIE_CVE-2023-52892

GHSA-FF7Q-6VWH-V9M4

UBUNTU-CVE-2023-52892 (CVE-2023-52892)

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Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour