gsd-2019-1549
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).
Aliases
Aliases



{
  "GSD": {
    "alias": "CVE-2019-1549",
    "description": "OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).",
    "id": "GSD-2019-1549",
    "references": [
      "https://www.suse.com/security/cve/CVE-2019-1549.html",
      "https://www.debian.org/security/2019/dsa-4539",
      "https://access.redhat.com/errata/RHSA-2020:1840",
      "https://access.redhat.com/errata/RHSA-2020:1337",
      "https://access.redhat.com/errata/RHSA-2020:1336",
      "https://ubuntu.com/security/CVE-2019-1549",
      "https://linux.oracle.com/cve/CVE-2019-1549.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-1549"
      ],
      "details": "OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).",
      "id": "GSD-2019-1549",
      "modified": "2023-12-13T01:23:51.072317Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "openssl-security@openssl.org",
        "DATE_PUBLIC": "2019-09-10",
        "ID": "CVE-2019-1549",
        "STATE": "PUBLIC",
        "TITLE": "Fork Protection"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "OpenSSL",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "OpenSSL"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "Matt Caswell"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)."
          }
        ]
      },
      "impact": [
        {
          "lang": "eng",
          "url": "https://www.openssl.org/policies/secpolicy.html#Low",
          "value": "Low"
        }
      ],
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Random Number Generation"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "FEDORA-2019-d15aac6c4e",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/"
          },
          {
            "name": "FEDORA-2019-d51641f152",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/"
          },
          {
            "name": "20191001 [SECURITY] [DSA 4539-1] openssl security update",
            "refsource": "BUGTRAQ",
            "url": "https://seclists.org/bugtraq/2019/Oct/1"
          },
          {
            "name": "DSA-4539",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2019/dsa-4539"
          },
          {
            "name": "USN-4376-1",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/4376-1/"
          },
          {
            "name": "https://www.oracle.com/security-alerts/cpuapr2020.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/security-alerts/cpuapr2020.html"
          },
          {
            "name": "https://www.oracle.com/security-alerts/cpujul2020.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/security-alerts/cpujul2020.html"
          },
          {
            "name": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"
          },
          {
            "name": "https://www.oracle.com/security-alerts/cpujan2020.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
          },
          {
            "name": "https://www.openssl.org/news/secadv/20190910.txt",
            "refsource": "CONFIRM",
            "url": "https://www.openssl.org/news/secadv/20190910.txt"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20190919-0002/",
            "refsource": "CONFIRM",
            "url": "https://security.netapp.com/advisory/ntap-20190919-0002/"
          },
          {
            "name": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be",
            "refsource": "CONFIRM",
            "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be"
          },
          {
            "name": "https://support.f5.com/csp/article/K44070243",
            "refsource": "CONFIRM",
            "url": "https://support.f5.com/csp/article/K44070243"
          },
          {
            "name": "https://support.f5.com/csp/article/K44070243?utm_source=f5support\u0026amp;utm_medium=RSS",
            "refsource": "CONFIRM",
            "url": "https://support.f5.com/csp/article/K44070243?utm_source=f5support\u0026amp;utm_medium=RSS"
          },
          {
            "name": "https://www.oracle.com/security-alerts/cpuoct2020.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "1.1.1c",
                "versionStartIncluding": "1.1.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "openssl-security@openssl.org",
          "ID": "CVE-2019-1549"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-330"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be",
              "refsource": "CONFIRM",
              "tags": [
                "Mailing List",
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be"
            },
            {
              "name": "https://www.openssl.org/news/secadv/20190910.txt",
              "refsource": "CONFIRM",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://www.openssl.org/news/secadv/20190910.txt"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20190919-0002/",
              "refsource": "CONFIRM",
              "tags": [],
              "url": "https://security.netapp.com/advisory/ntap-20190919-0002/"
            },
            {
              "name": "https://support.f5.com/csp/article/K44070243",
              "refsource": "CONFIRM",
              "tags": [],
              "url": "https://support.f5.com/csp/article/K44070243"
            },
            {
              "name": "FEDORA-2019-d15aac6c4e",
              "refsource": "FEDORA",
              "tags": [],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/"
            },
            {
              "name": "FEDORA-2019-d51641f152",
              "refsource": "FEDORA",
              "tags": [],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/"
            },
            {
              "name": "20191001 [SECURITY] [DSA 4539-1] openssl security update",
              "refsource": "BUGTRAQ",
              "tags": [],
              "url": "https://seclists.org/bugtraq/2019/Oct/1"
            },
            {
              "name": "DSA-4539",
              "refsource": "DEBIAN",
              "tags": [],
              "url": "https://www.debian.org/security/2019/dsa-4539"
            },
            {
              "name": "https://support.f5.com/csp/article/K44070243?utm_source=f5support\u0026amp;utm_medium=RSS",
              "refsource": "CONFIRM",
              "tags": [],
              "url": "https://support.f5.com/csp/article/K44070243?utm_source=f5support\u0026amp;utm_medium=RSS"
            },
            {
              "name": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
              "refsource": "MISC",
              "tags": [],
              "url": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujan2020.html",
              "refsource": "MISC",
              "tags": [],
              "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
            },
            {
              "name": "N/A",
              "refsource": "N/A",
              "tags": [],
              "url": "https://www.oracle.com/security-alerts/cpuapr2020.html"
            },
            {
              "name": "USN-4376-1",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "https://usn.ubuntu.com/4376-1/"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujul2020.html",
              "refsource": "MISC",
              "tags": [],
              "url": "https://www.oracle.com/security-alerts/cpujul2020.html"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2020.html",
              "refsource": "MISC",
              "tags": [],
              "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2020-10-20T22:15Z",
      "publishedDate": "2019-09-10T17:15Z"
    }
  }
}


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