gsd-2018-0732
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).
Aliases
Aliases
CVE-2018-0732


To clipboard 

{
   GSD: {
      alias: "CVE-2018-0732",
      description: "During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).",
      id: "GSD-2018-0732",
      references: [
         "https://www.suse.com/security/cve/CVE-2018-0732.html",
         "https://www.debian.org/security/2018/dsa-4355",
         "https://www.debian.org/security/2018/dsa-4348",
         "https://access.redhat.com/errata/RHSA-2019:1543",
         "https://access.redhat.com/errata/RHSA-2019:1297",
         "https://access.redhat.com/errata/RHSA-2019:1296",
         "https://access.redhat.com/errata/RHSA-2018:3221",
         "https://access.redhat.com/errata/RHSA-2018:2553",
         "https://access.redhat.com/errata/RHSA-2018:2552",
         "https://ubuntu.com/security/CVE-2018-0732",
         "https://advisories.mageia.org/CVE-2018-0732.html",
         "https://security.archlinux.org/CVE-2018-0732",
         "https://alas.aws.amazon.com/cve/html/CVE-2018-0732.html",
         "https://linux.oracle.com/cve/CVE-2018-0732.html",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2018-0732",
         ],
         details: "During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).",
         id: "GSD-2018-0732",
         modified: "2023-12-13T01:22:24.931616Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
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            ASSIGNER: "openssl-security@openssl.org",
            DATE_PUBLIC: "2018-06-12",
            ID: "CVE-2018-0732",
            STATE: "PUBLIC",
            TITLE: "Client DoS due to large DH parameter",
         },
         affects: {
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                     product: {
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                              product_name: "OpenSSL",
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               {
                  name: "https://www.oracle.com/security-alerts/cpuapr2020.html",
                  refsource: "MISC",
                  url: "https://www.oracle.com/security-alerts/cpuapr2020.html",
               },
               {
                  name: "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html",
                  refsource: "CONFIRM",
                  url: "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html",
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                  url: "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html",
               },
               {
                  name: "https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html",
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                  url: "https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html",
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                     name: "https://security.netapp.com/advisory/ntap-20190118-0002/",
                     refsource: "CONFIRM",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://security.netapp.com/advisory/ntap-20190118-0002/",
                  },
                  {
                     name: "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html",
                     refsource: "MISC",
                     tags: [
                        "Patch",
                        "Third Party Advisory",
                     ],
                     url: "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html",
                  },
                  {
                     name: "RHSA-2019:1297",
                     refsource: "REDHAT",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://access.redhat.com/errata/RHSA-2019:1297",
                  },
                  {
                     name: "RHSA-2019:1296",
                     refsource: "REDHAT",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://access.redhat.com/errata/RHSA-2019:1296",
                  },
                  {
                     name: "RHSA-2019:1543",
                     refsource: "REDHAT",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://access.redhat.com/errata/RHSA-2019:1543",
                  },
                  {
                     name: "https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html",
                     refsource: "MISC",
                     tags: [
                        "Patch",
                        "Third Party Advisory",
                     ],
                     url: "https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html",
                  },
                  {
                     name: "FEDORA-2019-db06efdea1",
                     refsource: "FEDORA",
                     tags: [
                        "Mailing List",
                        "Third Party Advisory",
                     ],
                     url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/",
                  },
                  {
                     name: "FEDORA-2019-00c25b9379",
                     refsource: "FEDORA",
                     tags: [
                        "Mailing List",
                        "Third Party Advisory",
                     ],
                     url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/",
                  },
                  {
                     name: "FEDORA-2019-9a0a7c0986",
                     refsource: "FEDORA",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/",
                  },
                  {
                     name: "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
                     refsource: "MISC",
                     tags: [
                        "Patch",
                        "Third Party Advisory",
                     ],
                     url: "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
                  },
                  {
                     name: "N/A",
                     refsource: "N/A",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://www.oracle.com/security-alerts/cpuapr2020.html",
                  },
                  {
                     name: "https://www.oracle.com/security-alerts/cpujan2021.html",
                     refsource: "MISC",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://www.oracle.com/security-alerts/cpujan2021.html",
                  },
                  {
                     name: "https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf",
                     refsource: "CONFIRM",
                     tags: [
                        "Third Party Advisory",
                     ],
                     url: "https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf",
                  },
               ],
            },
         },
         impact: {
            baseMetricV2: {
               cvssV2: {
                  accessComplexity: "LOW",
                  accessVector: "NETWORK",
                  authentication: "NONE",
                  availabilityImpact: "PARTIAL",
                  baseScore: 5,
                  confidentialityImpact: "NONE",
                  integrityImpact: "NONE",
                  vectorString: "AV:N/AC:L/Au:N/C:N/I:N/A:P",
                  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: "HIGH",
                  baseScore: 7.5,
                  baseSeverity: "HIGH",
                  confidentialityImpact: "NONE",
                  integrityImpact: "NONE",
                  privilegesRequired: "NONE",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  version: "3.1",
               },
               exploitabilityScore: 3.9,
               impactScore: 3.6,
            },
         },
         lastModifiedDate: "2022-08-16T13:00Z",
         publishedDate: "2018-06-12T13:29Z",
      },
   },
}


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UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



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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.