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
CVE-2019-1549


To clipboard 

{
   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&utm_medium=RSS",
                  refsource: "CONFIRM",
                  url: "https://support.f5.com/csp/article/K44070243?utm_source=f5support&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&utm_medium=RSS",
                     refsource: "CONFIRM",
                     tags: [],
                     url: "https://support.f5.com/csp/article/K44070243?utm_source=f5support&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,
                  confidentialityImpact: "PARTIAL",
                  integrityImpact: "NONE",
                  vectorString: "AV:N/AC:L/Au:N/C:P/I:N/A:N",
                  version: "2.0",
               },
               exploitabilityScore: 10,
               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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