CVE-2022-4203
Vulnerability from cvelistv5
Published
2023-02-24 14:53
Modified
2024-08-03 01:34
Severity ?
Summary
A read buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. The read buffer overrun might result in a crash which could lead to a denial of service attack. In theory it could also result in the disclosure of private memory contents (such as private keys, or sensitive plaintext) although we are not aware of any working exploit leading to memory contents disclosure as of the time of release of this advisory. In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects.
References
openssl-security@openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c927a3492698c254637da836762f9b1f86cffabcMailing List, Patch
openssl-security@openssl.orghttps://security.gentoo.org/glsa/202402-08
openssl-security@openssl.orghttps://www.openssl.org/news/secadv/20230207.txtVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c927a3492698c254637da836762f9b1f86cffabcMailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202402-08
af854a3a-2127-422b-91ae-364da2661108https://www.openssl.org/news/secadv/20230207.txtVendor Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T01:34:49.843Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "OpenSSL Advisory",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.openssl.org/news/secadv/20230207.txt"
          },
          {
            "name": "3.0.8 git commit",
            "tags": [
              "patch",
              "x_transferred"
            ],
            "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c927a3492698c254637da836762f9b1f86cffabc"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202402-08"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "OpenSSL",
          "vendor": "OpenSSL",
          "versions": [
            {
              "lessThan": "3.0.8",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Corey Bonnell from Digicert"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Viktor Dukhovni"
        }
      ],
      "datePublic": "2023-02-07T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A read buffer overrun can be triggered in X.509 certificate verification,\u003cbr\u003especifically in name constraint checking. Note that this occurs\u003cbr\u003eafter certificate chain signature verification and requires either a\u003cbr\u003eCA to have signed the malicious certificate or for the application to\u003cbr\u003econtinue certificate verification despite failure to construct a path\u003cbr\u003eto a trusted issuer.\u003cbr\u003e\u003cbr\u003eThe read buffer overrun might result in a crash which could lead to\u003cbr\u003ea denial of service attack. In theory it could also result in the disclosure\u003cbr\u003eof private memory contents (such as private keys, or sensitive plaintext)\u003cbr\u003ealthough we are not aware of any working exploit leading to memory\u003cbr\u003econtents disclosure as of the time of release of this advisory.\u003cbr\u003e\u003cbr\u003eIn a TLS client, this can be triggered by connecting to a malicious\u003cbr\u003eserver. In a TLS server, this can be triggered if the server requests\u003cbr\u003eclient authentication and a malicious client connects.\u003cbr\u003e\u003cbr\u003e"
            }
          ],
          "value": "A read buffer overrun can be triggered in X.509 certificate verification,\nspecifically in name constraint checking. Note that this occurs\nafter certificate chain signature verification and requires either a\nCA to have signed the malicious certificate or for the application to\ncontinue certificate verification despite failure to construct a path\nto a trusted issuer.\n\nThe read buffer overrun might result in a crash which could lead to\na denial of service attack. In theory it could also result in the disclosure\nof private memory contents (such as private keys, or sensitive plaintext)\nalthough we are not aware of any working exploit leading to memory\ncontents disclosure as of the time of release of this advisory.\n\nIn a TLS client, this can be triggered by connecting to a malicious\nserver. In a TLS server, this can be triggered if the server requests\nclient authentication and a malicious client connects.\n\n"
        }
      ],
      "metrics": [
        {
          "format": "other",
          "other": {
            "content": {
              "text": "Moderate"
            },
            "type": "https://www.openssl.org/policies/secpolicy.html"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "read buffer overrun ",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-02-24T14:53:08.485Z",
        "orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
        "shortName": "openssl"
      },
      "references": [
        {
          "name": "OpenSSL Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.openssl.org/news/secadv/20230207.txt"
        },
        {
          "name": "3.0.8 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c927a3492698c254637da836762f9b1f86cffabc"
        },
        {
          "url": "https://security.gentoo.org/glsa/202402-08"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "X.509 Name Constraints Read Buffer Overflow",
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
    "assignerShortName": "openssl",
    "cveId": "CVE-2022-4203",
    "datePublished": "2023-02-24T14:53:08.485Z",
    "dateReserved": "2022-11-29T10:00:42.027Z",
    "dateUpdated": "2024-08-03T01:34:49.843Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-4203\",\"sourceIdentifier\":\"openssl-security@openssl.org\",\"published\":\"2023-02-24T15:15:11.980\",\"lastModified\":\"2024-11-21T07:34:46.480\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A read buffer overrun can be triggered in X.509 certificate verification,\\nspecifically in name constraint checking. Note that this occurs\\nafter certificate chain signature verification and requires either a\\nCA to have signed the malicious certificate or for the application to\\ncontinue certificate verification despite failure to construct a path\\nto a trusted issuer.\\n\\nThe read buffer overrun might result in a crash which could lead to\\na denial of service attack. In theory it could also result in the disclosure\\nof private memory contents (such as private keys, or sensitive plaintext)\\nalthough we are not aware of any working exploit leading to memory\\ncontents disclosure as of the time of release of this advisory.\\n\\nIn a TLS client, this can be triggered by connecting to a malicious\\nserver. In a TLS server, this can be triggered if the server requests\\nclient authentication and a malicious client connects.\\n\\n\"},{\"lang\":\"es\",\"value\":\"Un desbordamiento del b\u00fafer de lectura puede activarse en la verificaci\u00f3n de certificados X.509, espec\u00edficamente en la verificaci\u00f3n de restricciones de nombre. Tenga en cuenta que esto ocurre despu\u00e9s de la verificaci\u00f3n de la firma de la cadena de certificados y requiere que una CA haya firmado el certificado malicioso o que la aplicaci\u00f3n contin\u00fae con la verificaci\u00f3n del certificado a pesar de no poder construir una ruta a un emisor de confianza. El desbordamiento del b\u00fafer de lectura puede provocar un bloqueo que podr\u00eda conducir a un ataque de denegaci\u00f3n de servicio. En teor\u00eda, tambi\u00e9n podr\u00eda provocar la divulgaci\u00f3n de contenidos de memoria privada (como claves privadas o texto plano confidencial), aunque no conocemos ning\u00fan exploit en funcionamiento que conduzca a la divulgaci\u00f3n de contenidos de memoria al momento de la publicaci\u00f3n de este aviso. En un cliente TLS, esto puede activarse al conectarse a un servidor malicioso. En un servidor TLS, esto puede activarse si el servidor solicita la autenticaci\u00f3n del cliente y un cliente malicioso se conecta.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.2,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.0.0\",\"versionEndExcluding\":\"3.0.8\",\"matchCriteriaId\":\"A6DC5D88-4E99-48F2-8892-610ACA9B5B86\"}]}]}],\"references\":[{\"url\":\"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c927a3492698c254637da836762f9b1f86cffabc\",\"source\":\"openssl-security@openssl.org\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://security.gentoo.org/glsa/202402-08\",\"source\":\"openssl-security@openssl.org\"},{\"url\":\"https://www.openssl.org/news/secadv/20230207.txt\",\"source\":\"openssl-security@openssl.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c927a3492698c254637da836762f9b1f86cffabc\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\"]},{\"url\":\"https://security.gentoo.org/glsa/202402-08\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.openssl.org/news/secadv/20230207.txt\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor 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.