CVE-2018-5407

Exp

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'.

Published: 2018-11-15 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-5407 is rated High Exploit Risk (60.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.84%). 3 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-5407

EDB-ID Source Kind Published Link
45785 exploit_db edb 2018-11-02 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-5407

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-13 0.64% 0.84% +0.20%
2 2026-03-04 0.31% 0.64% +0.33%
3 2026-03-01 — 0.31% —

Full EPSS history (43 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-5407

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.7 3.1 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.0 3.6 [email protected]
1.9 2.0 LOW
AV:L/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.4 2.9 [email protected]

Weakness enumeration for CVE-2018-5407

OS Trackers for CVE-2018-5407

vendor priority summary link
debian not yet assigned CVE-2018-5407 not yet assigned priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-5407
gentoo normal CVE-2018-5407: 1 GLSA(s) (201903-10), 1 atom(s) (dev-libs/openssl); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-5407
redhat medium — https://access.redhat.com/security/cve/CVE-2018-5407
suse medium CVE-2018-5407 severity moderate: SUSE including 367 source package names (0.9.1:libopenssl1_0_0-1.0.2j-60.46.1, 0.9.1:openssl-1.0.2j-60.46.1, …), 806 product×package rows across 135 product lines (Container caasp/v4/default-http-backend, Container caasp/v4/dnsmasq-nanny, … (135 product lines)): Fixed 444, Known Affected 231, Known Not Affected 131. https://www.suse.com/security/cve/CVE-2018-5407/
ubuntu low CVE-2018-5407 low priority: Ubuntu including 3 source packages (openssl, openssl098, openssl1.0), 30 status rows across 10 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, trusty, upstream, xenial): DNE 16, not-affected 6, released 6, needs-triage 2. https://ubuntu.com/security/CVE-2018-5407

Affected software / configurations for CVE-2018-5407

Vendor Product Version Raw CPE
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.10 cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
nodejs node.js < 6.14.4 cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
nodejs node.js >= 8.0.0, < 8.11.4 cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
nodejs node.js >= 10.0.0, < 10.9.0 cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
openssl openssl >= 1.0.2, < 1.0.2q cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl >= 1.1.0, < 1.1.0i cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
tenable nessus < 8.1.1 cpe:2.3:a:tenable:nessus:*:*:*:*:*:*:*:*
oracle api_gateway 11.1.2.4.0 cpe:2.3:a:oracle:api_gateway:11.1.2.4.0:*:*:*:*:*:*:*
oracle application_server 0.9.8 cpe:2.3:a:oracle:application_server:0.9.8:*:*:*:*:*:*:*
oracle application_server 1.0.0 cpe:2.3:a:oracle:application_server:1.0.0:*:*:*:*:*:*:*
oracle application_server 1.0.1 cpe:2.3:a:oracle:application_server:1.0.1:*:*:*:*:*:*:*
oracle enterprise_manager_base_platform 12.1.0.5.0 cpe:2.3:a:oracle:enterprise_manager_base_platform:12.1.0.5.0:*:*:*:*:*:*:*
oracle enterprise_manager_base_platform 13.2.0.0.0 cpe:2.3:a:oracle:enterprise_manager_base_platform:13.2.0.0.0:*:*:*:*:*:*:*
oracle enterprise_manager_base_platform 13.3.0.0.0 cpe:2.3:a:oracle:enterprise_manager_base_platform:13.3.0.0.0:*:*:*:*:*:*:*
oracle enterprise_manager_ops_center 12.3.3 cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:*
oracle mysql_enterprise_backup <= 3.12.3 cpe:2.3:a:oracle:mysql_enterprise_backup:*:*:*:*:*:*:*:*
oracle mysql_enterprise_backup >= 3.12.4, <= 4.1.2 cpe:2.3:a:oracle:mysql_enterprise_backup:*:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.55 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.55:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.56 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.56:*:*:*:*:*:*:*
oracle peoplesoft_enterprise_peopletools 8.57 cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:*:*:*:*:*:*:*
oracle primavera_p6_enterprise_project_portfolio_management >= 17.7, <= 17.12 cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:*:*:*:*:*:*:*:*
oracle primavera_p6_enterprise_project_portfolio_management 8.4 cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:8.4:*:*:*:*:*:*:*
oracle primavera_p6_enterprise_project_portfolio_management 15.1 cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:15.1:*:*:*:*:*:*:*
oracle primavera_p6_enterprise_project_portfolio_management 15.2 cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:15.2:*:*:*:*:*:*:*
oracle primavera_p6_enterprise_project_portfolio_management 16.1 cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:16.1:*:*:*:*:*:*:*
oracle primavera_p6_enterprise_project_portfolio_management 16.2 cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:16.2:*:*:*:*:*:*:*
oracle primavera_p6_enterprise_project_portfolio_management 18.8 cpe:2.3:a:oracle:primavera_p6_enterprise_project_portfolio_management:18.8:*:*:*:*:*:*:*
oracle tuxedo 12.1.1.0.0 cpe:2.3:a:oracle:tuxedo:12.1.1.0.0:*:*:*:*:*:*:*
oracle vm_virtualbox < 6.0.0 cpe:2.3:a:oracle:vm_virtualbox:*:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.6 cpe:2.3:o:redhat:enterprise_linux_server:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_eus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*

References for CVE-2018-5407

URL Tags
http://www.securityfocus.com/bid/105897 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2019:0483 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0651 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0652 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2125 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3929 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3931 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3932 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3933 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3935 Third Party Advisory
https://eprint.iacr.org/2018/1060.pdf Technical Description Third Party Advisory
https://github.com/bbbrumley/portsmash Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00024.html Mailing List Third Party Advisory
https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/ Third Party Advisory
https://security.gentoo.org/glsa/201903-10 Third Party Advisory
https://security.netapp.com/advisory/ntap-20181126-0001/ Third Party Advisory
https://support.f5.com/csp/article/K49711130?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/3840-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4348 Third Party Advisory
https://www.debian.org/security/2018/dsa-4355 Third Party Advisory
https://www.exploit-db.com/exploits/45785/ Exploit Third Party Advisory VDB Entry
https://www.oracle.com/security-alerts/cpuapr2020.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2020.html Patch Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Patch Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html Patch Vendor Advisory
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html Patch Third Party Advisory
https://www.tenable.com/security/tns-2018-16 Third Party Advisory
https://www.tenable.com/security/tns-2018-17 Third Party Advisory
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