CVE-2018-5407 (GCVE-0-2018-5407)

Vulnerability from cvelistv5 – Published: 2018-11-15 21:00 – Updated: 2026-10-08 21:13
VLAI
Summary
Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:07 UTC
CWE
Assigner
certcc CNA under the mitre root
CNA scorecard E 42/100 over 156 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2019:0483 vendor-advisoryx_refsource_REDHAT
https://www.oracle.com/technetwork/security-advis… x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-2018112… x_refsource_CONFIRM
https://usn.ubuntu.com/3840-1/ vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2018/dsa-4355 vendor-advisoryx_refsource_DEBIAN
https://www.tenable.com/security/tns-2018-17 x_refsource_CONFIRM
https://nodejs.org/en/blog/vulnerability/november… x_refsource_CONFIRM
https://security.gentoo.org/glsa/201903-10 vendor-advisoryx_refsource_GENTOO
https://www.tenable.com/security/tns-2018-16 x_refsource_CONFIRM
https://www.exploit-db.com/exploits/45785/ exploitx_refsource_EXPLOIT-DB
https://lists.debian.org/debian-lts-announce/2018… mailing-listx_refsource_MLIST
https://github.com/bbbrumley/portsmash x_refsource_MISC
https://www.debian.org/security/2018/dsa-4348 vendor-advisoryx_refsource_DEBIAN
http://www.securityfocus.com/bid/105897 vdb-entryx_refsource_BID
https://eprint.iacr.org/2018/1060.pdf x_refsource_MISC
https://access.redhat.com/errata/RHSA-2019:0651 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:0652 vendor-advisoryx_refsource_REDHAT
https://www.oracle.com/technetwork/security-advis… x_refsource_MISC
https://www.oracle.com/technetwork/security-advis… x_refsource_MISC
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https://access.redhat.com/errata/RHSA-2019:3933 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3931 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3935 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:3932 vendor-advisoryx_refsource_REDHAT
https://www.oracle.com/security-alerts/cpujan2020.html x_refsource_MISC
https://www.oracle.com/security-alerts/cpuapr2020.html x_refsource_MISC
Impacted products
Date Public
2018-11-15 00:00
Show details on NVD website
To clipboard 

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        ],
        "sourceIdentifier": "cret@cert.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-200"
              }
            ],
            "source": "cret@cert.org",
            "type": "Secondary"
          },
          {
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                "value": "CWE-203"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
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        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-09T03:07:06+00:00",
      "cve": "CVE-2018-5407",
      "id": "CVE-2018-5407",
      "initial_release_date": "2018-10-30T00:00:00+00:00",
      "product_status:fixed": "383",
      "product_status:known_affected": "17",
      "product_status:known_not_affected": "6",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openssl: Side-channel vulnerability on SMT/Hyper-Threading architectures (PortSmash)",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-5407.json",
      "version": "3"
    }
  }
}



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