CVE-2018-0732 (GCVE-0-2018-0732)

Vulnerability from cvelistv5 – Published: 2018-06-12 13:00 – Updated: 2024-09-17 02:11
VLAI
Title
Client DoS due to large DH parameter
Summary
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).
Severity
No CVSS data available.
CWE
  • Client side Denial of Service
Assigner
References
URL Tags
https://lists.debian.org/debian-lts-announce/2018… mailing-listx_refsource_MLIST
http://www.securityfocus.com/bid/104442 vdb-entryx_refsource_BID
https://www.debian.org/security/2018/dsa-4355 vendor-advisoryx_refsource_DEBIAN
https://access.redhat.com/errata/RHSA-2018:2552 vendor-advisoryx_refsource_REDHAT
https://security.gentoo.org/glsa/201811-03 vendor-advisoryx_refsource_GENTOO
https://usn.ubuntu.com/3692-2/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:2553 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:3505 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3692-1/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:3221 vendor-advisoryx_refsource_REDHAT
https://www.debian.org/security/2018/dsa-4348 vendor-advisoryx_refsource_DEBIAN
http://www.securitytracker.com/id/1041090 vdb-entryx_refsource_SECTRACK
https://access.redhat.com/errata/RHSA-2019:1297 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:1296 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:1543 vendor-advisoryx_refsource_REDHAT
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://www.oracle.com/security-alerts/cpuapr2020.html x_refsource_MISC
http://www.oracle.com/technetwork/security-adviso… x_refsource_CONFIRM
https://www.oracle.com/technetwork/security-advis… x_refsource_CONFIRM
https://www.oracle.com/technetwork/security-advis… x_refsource_MISC
https://www.oracle.com/technetwork/security-advis… x_refsource_MISC
https://www.oracle.com/technetwork/security-advis… x_refsource_MISC
https://www.oracle.com/security-alerts/cpujan2021.html x_refsource_MISC
https://www.tenable.com/security/tns-2018-14 x_refsource_CONFIRM
https://securityadvisories.paloaltonetworks.com/H… x_refsource_CONFIRM
https://www.tenable.com/security/tns-2018-13 x_refsource_CONFIRM
https://www.tenable.com/security/tns-2018-17 x_refsource_CONFIRM
https://www.tenable.com/security/tns-2018-12 x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-2018110… x_refsource_CONFIRM
https://nodejs.org/en/blog/vulnerability/august-2… x_refsource_CONFIRM
https://git.openssl.org/gitweb/?p=openssl.git%3Ba… x_refsource_CONFIRM
https://www.openssl.org/news/secadv/20180612.txt x_refsource_CONFIRM
https://git.openssl.org/gitweb/?p=openssl.git%3Ba… x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-2019011… x_refsource_CONFIRM
https://cert-portal.siemens.com/productcert/pdf/s… x_refsource_CONFIRM
Impacted products
Vendor Product Version
OpenSSL OpenSSL Affected: Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h)
Affected: Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o)
Create a notification for this product.
Date Public
2018-06-12 00:00
Credits
Guido Vranken
Show details on NVD website
To clipboard 

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          "url": "https://security.netapp.com/advisory/ntap-20190118-0002/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf"
        }
      ],
      "title": "Client DoS due to large DH parameter",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "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": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "OpenSSL",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h)"
                          },
                          {
                            "version_value": "Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o)"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "OpenSSL"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Guido Vranken"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "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)."
            }
          ]
        },
        "impact": [
          {
            "lang": "eng",
            "url": "https://www.openssl.org/policies/secpolicy.html#Low",
            "value": "Low"
          }
        ],
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Client side Denial of Service"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "[debian-lts-announce] 20180728 [SECURITY] [DLA 1449-1] openssl security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00043.html"
            },
            {
              "name": "104442",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/104442"
            },
            {
              "name": "DSA-4355",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2018/dsa-4355"
            },
            {
              "name": "RHSA-2018:2552",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2018:2552"
            },
            {
              "name": "GLSA-201811-03",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/201811-03"
            },
            {
              "name": "USN-3692-2",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3692-2/"
            },
            {
              "name": "RHSA-2018:2553",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2018:2553"
            },
            {
              "name": "RHSA-2018:3505",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2018:3505"
            },
            {
              "name": "USN-3692-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3692-1/"
            },
            {
              "name": "RHSA-2018:3221",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2018:3221"
            },
            {
              "name": "DSA-4348",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2018/dsa-4348"
            },
            {
              "name": "1041090",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1041090"
            },
            {
              "name": "RHSA-2019:1297",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2019:1297"
            },
            {
              "name": "RHSA-2019:1296",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2019:1296"
            },
            {
              "name": "RHSA-2019:1543",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2019:1543"
            },
            {
              "name": "FEDORA-2019-db06efdea1",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/"
            },
            {
              "name": "FEDORA-2019-00c25b9379",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/"
            },
            {
              "name": "FEDORA-2019-9a0a7c0986",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/"
            },
            {
              "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"
            },
            {
              "name": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html",
              "refsource": "CONFIRM",
              "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
            },
            {
              "name": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"
            },
            {
              "name": "https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.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/cpujan2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujan2021.html"
            },
            {
              "name": "https://www.tenable.com/security/tns-2018-14",
              "refsource": "CONFIRM",
              "url": "https://www.tenable.com/security/tns-2018-14"
            },
            {
              "name": "https://securityadvisories.paloaltonetworks.com/Home/Detail/133",
              "refsource": "CONFIRM",
              "url": "https://securityadvisories.paloaltonetworks.com/Home/Detail/133"
            },
            {
              "name": "https://www.tenable.com/security/tns-2018-13",
              "refsource": "CONFIRM",
              "url": "https://www.tenable.com/security/tns-2018-13"
            },
            {
              "name": "https://www.tenable.com/security/tns-2018-17",
              "refsource": "CONFIRM",
              "url": "https://www.tenable.com/security/tns-2018-17"
            },
            {
              "name": "https://www.tenable.com/security/tns-2018-12",
              "refsource": "CONFIRM",
              "url": "https://www.tenable.com/security/tns-2018-12"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20181105-0001/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20181105-0001/"
            },
            {
              "name": "https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/",
              "refsource": "CONFIRM",
              "url": "https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/"
            },
            {
              "name": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=3984ef0b72831da8b3ece4745cac4f8575b19098",
              "refsource": "CONFIRM",
              "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=3984ef0b72831da8b3ece4745cac4f8575b19098"
            },
            {
              "name": "https://www.openssl.org/news/secadv/20180612.txt",
              "refsource": "CONFIRM",
              "url": "https://www.openssl.org/news/secadv/20180612.txt"
            },
            {
              "name": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=ea7abeeabf92b7aca160bdd0208636d4da69f4f4",
              "refsource": "CONFIRM",
              "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=ea7abeeabf92b7aca160bdd0208636d4da69f4f4"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20190118-0002/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20190118-0002/"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf",
              "refsource": "CONFIRM",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
    "assignerShortName": "openssl",
    "cveId": "CVE-2018-0732",
    "datePublished": "2018-06-12T13:00:00.000Z",
    "dateReserved": "2017-11-30T00:00:00.000Z",
    "dateUpdated": "2024-09-17T02:11:18.325Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2018-0732",
      "date": "2026-10-03",
      "epss": "0.48831",
      "percentile": "0.98844"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.