fkie_cve-2019-1549
Vulnerability from fkie_nvd
Published
2019-09-10 17:15
Modified
2024-11-21 04:36
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
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).
References
openssl-security@openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be
openssl-security@openssl.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/
openssl-security@openssl.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/
openssl-security@openssl.orghttps://seclists.org/bugtraq/2019/Oct/1
openssl-security@openssl.orghttps://security.netapp.com/advisory/ntap-20190919-0002/
openssl-security@openssl.orghttps://support.f5.com/csp/article/K44070243
openssl-security@openssl.orghttps://support.f5.com/csp/article/K44070243?utm_source=f5support&amp%3Butm_medium=RSS
openssl-security@openssl.orghttps://usn.ubuntu.com/4376-1/
openssl-security@openssl.orghttps://www.debian.org/security/2019/dsa-4539
openssl-security@openssl.orghttps://www.openssl.org/news/secadv/20190910.txtVendor Advisory
openssl-security@openssl.orghttps://www.oracle.com/security-alerts/cpuapr2020.html
openssl-security@openssl.orghttps://www.oracle.com/security-alerts/cpujan2020.html
openssl-security@openssl.orghttps://www.oracle.com/security-alerts/cpujul2020.html
openssl-security@openssl.orghttps://www.oracle.com/security-alerts/cpuoct2020.html
openssl-security@openssl.orghttps://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
af854a3a-2127-422b-91ae-364da2661108https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/
af854a3a-2127-422b-91ae-364da2661108https://seclists.org/bugtraq/2019/Oct/1
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20190919-0002/
af854a3a-2127-422b-91ae-364da2661108https://support.f5.com/csp/article/K44070243
af854a3a-2127-422b-91ae-364da2661108https://support.f5.com/csp/article/K44070243?utm_source=f5support&amp%3Butm_medium=RSS
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4376-1/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2019/dsa-4539
af854a3a-2127-422b-91ae-364da2661108https://www.openssl.org/news/secadv/20190910.txtVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuapr2020.html
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujan2020.html
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujul2020.html
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuoct2020.html
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
Impacted products
Vendor Product Version
openssl openssl *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "A2ACA227-3992-478E-85C3-023D8AF88A08",
                     versionEndIncluding: "1.1.1c",
                     versionStartIncluding: "1.1.1",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         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).",
      },
      {
         lang: "es",
         value: "OpenSSL versión 1.1.1 introdujo un generador de números aleatorios (RNG) reescrito. Este tuvo la intención de incluir protección en el caso de una llamada de sistema fork() para asegurar que los procesos padre e hijo no compartieran el mismo estado RNG. Sin embargo, esta protección no estaba siendo usada en el caso predeterminado. Una mitigación parcial para este problema es que la salida de un temporizador de alta precisión se mezcla en el estado RNG, por lo que la probabilidad de un estado de intercambio de procesos padre e hijo es reducida significativamente. Si una aplicación ahora llama a OPENSSL_init_crypto() explícitamente utilizando OPENSSL_INIT_ATFORK, este problema no se produce en absoluto. Corregido en OpenSSL versión 1.1.1d (afectadas las versiones 1.1.1 hasta 1.1.1c).",
      },
   ],
   id: "CVE-2019-1549",
   lastModified: "2024-11-21T04:36:48.343",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
               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,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: false,
         },
      ],
      cvssMetricV31: [
         {
            cvssData: {
               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,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2019-09-10T17:15:11.813",
   references: [
      {
         source: "openssl-security@openssl.org",
         url: "https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://seclists.org/bugtraq/2019/Oct/1",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://security.netapp.com/advisory/ntap-20190919-0002/",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://support.f5.com/csp/article/K44070243",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://support.f5.com/csp/article/K44070243?utm_source=f5support&amp%3Butm_medium=RSS",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://usn.ubuntu.com/4376-1/",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://www.debian.org/security/2019/dsa-4539",
      },
      {
         source: "openssl-security@openssl.org",
         tags: [
            "Vendor Advisory",
         ],
         url: "https://www.openssl.org/news/secadv/20190910.txt",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://www.oracle.com/security-alerts/cpuapr2020.html",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://www.oracle.com/security-alerts/cpujan2020.html",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://www.oracle.com/security-alerts/cpujul2020.html",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://www.oracle.com/security-alerts/cpuoct2020.html",
      },
      {
         source: "openssl-security@openssl.org",
         url: "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://seclists.org/bugtraq/2019/Oct/1",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://security.netapp.com/advisory/ntap-20190919-0002/",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://support.f5.com/csp/article/K44070243",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://support.f5.com/csp/article/K44070243?utm_source=f5support&amp%3Butm_medium=RSS",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://usn.ubuntu.com/4376-1/",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://www.debian.org/security/2019/dsa-4539",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Vendor Advisory",
         ],
         url: "https://www.openssl.org/news/secadv/20190910.txt",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://www.oracle.com/security-alerts/cpuapr2020.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://www.oracle.com/security-alerts/cpujan2020.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://www.oracle.com/security-alerts/cpujul2020.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://www.oracle.com/security-alerts/cpuoct2020.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
      },
   ],
   sourceIdentifier: "openssl-security@openssl.org",
   vulnStatus: "Modified",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-330",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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