CVE-2022-4450
Vulnerability from cvelistv5
Published
2023-02-08 19:04
Modified
2024-08-03 01:41
Severity ?
Summary
Double free after calling PEM_read_bio_ex
References
openssl-security@openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83Patch, Vendor Advisory
openssl-security@openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858bPatch, Vendor Advisory
openssl-security@openssl.orghttps://security.gentoo.org/glsa/202402-08
openssl-security@openssl.orghttps://www.openssl.org/news/secadv/20230207.txtVendor Advisory
Impacted products
OpenSSLOpenSSL
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T01:41:44.632Z",
          "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=63bcf189be73a9cc1264059bed6f57974be74a83"
          },
          {
            "name": "1.1.1t git commit",
            "tags": [
              "patch",
              "x_transferred"
            ],
            "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b"
          },
          {
            "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"
            },
            {
              "lessThan": "1.1.1t",
              "status": "affected",
              "version": "1.1.1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "CarpetFuzz"
        },
        {
          "lang": "en",
          "type": "reporter",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Dawei Wang"
        },
        {
          "lang": "en",
          "type": "reporter",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Marc Sch\u00f6nefeld"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Kurt Roeckx"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Matt Caswell"
        }
      ],
      "datePublic": "2023-02-07T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and\u003cbr\u003edecodes the \"name\" (e.g. \"CERTIFICATE\"), any header data and the payload data.\u003cbr\u003eIf the function succeeds then the \"name_out\", \"header\" and \"data\" arguments are\u003cbr\u003epopulated with pointers to buffers containing the relevant decoded data. The\u003cbr\u003ecaller is responsible for freeing those buffers. It is possible to construct a\u003cbr\u003ePEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex()\u003cbr\u003ewill return a failure code but will populate the header argument with a pointer\u003cbr\u003eto a buffer that has already been freed. If the caller also frees this buffer\u003cbr\u003ethen a double free will occur. This will most likely lead to a crash. This\u003cbr\u003ecould be exploited by an attacker who has the ability to supply malicious PEM\u003cbr\u003efiles for parsing to achieve a denial of service attack.\u003cbr\u003e\u003cbr\u003eThe functions PEM_read_bio() and PEM_read() are simple wrappers around\u003cbr\u003ePEM_read_bio_ex() and therefore these functions are also directly affected.\u003cbr\u003e\u003cbr\u003eThese functions are also called indirectly by a number of other OpenSSL\u003cbr\u003efunctions including PEM_X509_INFO_read_bio_ex() and\u003cbr\u003eSSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal\u003cbr\u003euses of these functions are not vulnerable because the caller does not free the\u003cbr\u003eheader argument if PEM_read_bio_ex() returns a failure code. These locations\u003cbr\u003einclude the PEM_read_bio_TYPE() functions as well as the decoders introduced in\u003cbr\u003eOpenSSL 3.0.\u003cbr\u003e\u003cbr\u003e\u003cdiv\u003eThe OpenSSL asn1parse command line application is also impacted by this issue.\u003c/div\u003e\u003cbr\u003e"
            }
          ],
          "value": "The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and\ndecodes the \"name\" (e.g. \"CERTIFICATE\"), any header data and the payload data.\nIf the function succeeds then the \"name_out\", \"header\" and \"data\" arguments are\npopulated with pointers to buffers containing the relevant decoded data. The\ncaller is responsible for freeing those buffers. It is possible to construct a\nPEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex()\nwill return a failure code but will populate the header argument with a pointer\nto a buffer that has already been freed. If the caller also frees this buffer\nthen a double free will occur. This will most likely lead to a crash. This\ncould be exploited by an attacker who has the ability to supply malicious PEM\nfiles for parsing to achieve a denial of service attack.\n\nThe functions PEM_read_bio() and PEM_read() are simple wrappers around\nPEM_read_bio_ex() and therefore these functions are also directly affected.\n\nThese functions are also called indirectly by a number of other OpenSSL\nfunctions including PEM_X509_INFO_read_bio_ex() and\nSSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal\nuses of these functions are not vulnerable because the caller does not free the\nheader argument if PEM_read_bio_ex() returns a failure code. These locations\ninclude the PEM_read_bio_TYPE() functions as well as the decoders introduced in\nOpenSSL 3.0.\n\nThe OpenSSL asn1parse command line application is also impacted by this issue.\n\n\n"
        }
      ],
      "metrics": [
        {
          "format": "other",
          "other": {
            "content": {
              "text": "Moderate"
            },
            "type": "https://www.openssl.org/policies/secpolicy.html"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "double-free",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-02-24T14:53:33.164Z",
        "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=63bcf189be73a9cc1264059bed6f57974be74a83"
        },
        {
          "name": "1.1.1t git commit",
          "tags": [
            "patch"
          ],
          "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b"
        },
        {
          "url": "https://security.gentoo.org/glsa/202402-08"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Double free after calling PEM_read_bio_ex",
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
    "assignerShortName": "openssl",
    "cveId": "CVE-2022-4450",
    "datePublished": "2023-02-08T19:04:04.874Z",
    "dateReserved": "2022-12-13T13:38:08.598Z",
    "dateUpdated": "2024-08-03T01:41:44.632Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-4450\",\"sourceIdentifier\":\"openssl-security@openssl.org\",\"published\":\"2023-02-08T20:15:23.973\",\"lastModified\":\"2024-02-04T09:15:08.733\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and\\ndecodes the \\\"name\\\" (e.g. \\\"CERTIFICATE\\\"), any header data and the payload data.\\nIf the function succeeds then the \\\"name_out\\\", \\\"header\\\" and \\\"data\\\" arguments are\\npopulated with pointers to buffers containing the relevant decoded data. The\\ncaller is responsible for freeing those buffers. It is possible to construct a\\nPEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex()\\nwill return a failure code but will populate the header argument with a pointer\\nto a buffer that has already been freed. If the caller also frees this buffer\\nthen a double free will occur. This will most likely lead to a crash. This\\ncould be exploited by an attacker who has the ability to supply malicious PEM\\nfiles for parsing to achieve a denial of service attack.\\n\\nThe functions PEM_read_bio() and PEM_read() are simple wrappers around\\nPEM_read_bio_ex() and therefore these functions are also directly affected.\\n\\nThese functions are also called indirectly by a number of other OpenSSL\\nfunctions including PEM_X509_INFO_read_bio_ex() and\\nSSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal\\nuses of these functions are not vulnerable because the caller does not free the\\nheader argument if PEM_read_bio_ex() returns a failure code. These locations\\ninclude the PEM_read_bio_TYPE() functions as well as the decoders introduced in\\nOpenSSL 3.0.\\n\\nThe OpenSSL asn1parse command line application is also impacted by this issue.\\n\\n\\n\"}],\"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:N/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-415\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.1.1\",\"versionEndExcluding\":\"1.1.1t\",\"matchCriteriaId\":\"DE0061D6-8F81-45D3-B254-82A94915FD08\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.0.0\",\"versionEndExcluding\":\"3.0.8\",\"matchCriteriaId\":\"A6DC5D88-4E99-48F2-8892-610ACA9B5B86\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.0.0\",\"versionEndExcluding\":\"4.3.16\",\"matchCriteriaId\":\"F7794B42-8235-4C75-866F-5D0A405F0989\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.4.0\",\"versionEndExcluding\":\"4.6.3\",\"matchCriteriaId\":\"C8A23A5D-928A-4225-9C93-31E5DFE215A7\"}]}]}],\"references\":[{\"url\":\"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=63bcf189be73a9cc1264059bed6f57974be74a83\",\"source\":\"openssl-security@openssl.org\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=bbcf509bd046b34cca19c766bbddc31683d0858b\",\"source\":\"openssl-security@openssl.org\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"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\"]}]}}"
  }
}


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.