CVE-2018-0732 : During key agreement in a TLS handshake using a DH(E) based ciphersuite a malici

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).

Published 2018-06-12 13:29:00

Updated 2022-08-16 13:00:50

Source OpenSSL Software Foundation

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2018-0732

Debian » Debian Linux » Version: 8.0
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Matching versions
Openssl » Openssl
Versions from including (>=) 1.0.2 and up to, including, (<=) 1.0.2o
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
Matching versions
Openssl » Openssl
Versions from including (>=) 1.1.0 and up to, including, (<=) 1.1.0h
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 14.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 12.04 ESM Edition
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 16.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 18.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 17.10
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
Matching versions
Nodejs » Node.js » LTS Edition
Versions from including (>=) 6.9.0 and before (<) 6.14.4
cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
Matching versions
Nodejs » Node.js » LTS Edition
Versions from including (>=) 8.9.0 and before (<) 8.11.4
cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
Matching versions
Nodejs » Node.js »
Versions from including (>=) 6.0.0 and before (<) 6.8.1
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
Matching versions
Nodejs » Node.js »
Versions from including (>=) 10.0.0 and before (<) 10.9.0
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
Matching versions
Nodejs » Node.js »
Versions from including (>=) 8.0.0 and before (<) 8.8.1
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2018-0732

EPSS FAQ

81.09%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 99 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-0732

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2018-0732

CWE-320

Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-0732

https://security.netapp.com/advisory/ntap-20190118-0002/

January 2019 MySQL Vulnerabilities in NetApp Products | NetApp Product Security
Third Party Advisory

CVEs referencing this url
https://usn.ubuntu.com/3692-2/

USN-3692-2: OpenSSL vulnerabilities | Ubuntu security notices
Third Party Advisory

CVEs referencing this url
https://www.tenable.com/security/tns-2018-14

[R1] Nessus 8.0.0 Fixes Multiple Third-party Vulnerabilities - Security Advisory | Tenable®
Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/

[SECURITY] Fedora 30 Update: compat-openssl10-1.0.2o-7.fc30 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2018/07/msg00043.html

[SECURITY] [DLA 1449-1] openssl security update
Third Party Advisory

CVEs referencing this url
https://usn.ubuntu.com/3692-1/

USN-3692-1: OpenSSL vulnerabilities | Ubuntu security notices
Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/

[SECURITY] Fedora 31 Update: compat-openssl10-1.0.2o-8.fc31 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2018:2552

RHSA-2018:2552 - Security Advisory - Red Hat Customer Portal
Third Party Advisory

CVEs referencing this url
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html

CPU Oct 2018
Patch;Third Party Advisory

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2019:1297

RHSA-2019:1297 - Security Advisory - Red Hat Customer Portal
Third Party Advisory

CVEs referencing this url
https://www.oracle.com/security-alerts/cpuapr2020.html

Oracle Critical Patch Update Advisory - April 2020
Third Party Advisory

CVEs referencing this url
https://www.tenable.com/security/tns-2018-17

[R1] Nessus 7.1.4 Fixes Multiple Third-party Vulnerabilities - Security Advisory | Tenable®
Third Party Advisory

CVEs referencing this url
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

Page not found | Oracle
Patch;Third Party Advisory

CVEs referencing this url
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html

Oracle Critical Patch Update - July 2019
Patch;Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/

[SECURITY] Fedora 29 Update: compat-openssl10-1.0.2o-7.fc29 - package-announce - Fedora Mailing-Lists
Third Party Advisory

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2018:3505

RHSA-2018:3505 - Security Advisory - Red Hat Customer Portal
Third Party Advisory

CVEs referencing this url
https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/

August 2018 Security Releases | Node.js
Vendor Advisory

CVEs referencing this url
https://www.tenable.com/security/tns-2018-13

[R1] LCE 5.1.1 Fixes Multiple Third-party Vulnerabilities - Security Advisory | Tenable®
Third Party Advisory

CVEs referencing this url
https://security.gentoo.org/glsa/201811-03

OpenSSL: Denial of Service (GLSA 201811-03) — Gentoo security
Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2021.html

Oracle Critical Patch Update Advisory - January 2021
Third Party Advisory

CVEs referencing this url
https://security.netapp.com/advisory/ntap-20181105-0001/

CVE-2018-0732 OpenSSL Vulnerability in NetApp Products | NetApp Product Security
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1296

RHSA-2019:1296 - Security Advisory - Red Hat Customer Portal
Third Party Advisory

CVEs referencing this url
http://www.securitytracker.com/id/1041090

OpenSSL DH Parameter Processing Lets Remote Servers Deny Service on Connected Clients - SecurityTracker
Third Party Advisory;VDB Entry
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

Oracle Critical Patch Update - April 2019
Patch;Third Party Advisory

CVEs referencing this url
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=3984ef0b72831da8b3ece4745cac4f8575b19098

git.openssl.org Git - openssl.git/commitdiff
Patch;Third Party Advisory
https://securityadvisories.paloaltonetworks.com/Home/Detail/133

Third Party Advisory

CVEs referencing this url
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html

Oracle Critical Patch Update - January 2019
Patch;Third Party Advisory

CVEs referencing this url
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=ea7abeeabf92b7aca160bdd0208636d4da69f4f4

git.openssl.org Git - openssl.git/commitdiff
Patch;Third Party Advisory
http://www.securityfocus.com/bid/104442

OpenSSL CVE-2018-0732 Denial of Service Vulnerability
Third Party Advisory;VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf

Third Party Advisory
https://www.openssl.org/news/secadv/20180612.txt

Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:2553

RHSA-2018:2553 - Security Advisory - Red Hat Customer Portal
Third Party Advisory

CVEs referencing this url
https://www.debian.org/security/2018/dsa-4348

Debian -- Security Information -- DSA-4348-1 openssl
Third Party Advisory

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2018:3221

RHSA-2018:3221 - Security Advisory - Red Hat Customer Portal
Third Party Advisory

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2019:1543

RHSA-2019:1543 - Security Advisory - Red Hat Customer Portal
Third Party Advisory

CVEs referencing this url
https://www.tenable.com/security/tns-2018-12

[R1] SecurityCenter 5.7.1 Fixes Multiple Third-Party Vulnerabilities - Security Advisory | Tenable®
Third Party Advisory

CVEs referencing this url
https://www.debian.org/security/2018/dsa-4355

Debian -- Security Information -- DSA-4355-1 openssl1.0
Third Party Advisory

CVEs referencing this url

Jump to

Vulnerability Details : CVE-2018-0732

Products affected by CVE-2018-0732

Exploit prediction scoring system (EPSS) score for CVE-2018-0732

CVSS scores for CVE-2018-0732

CWE ids for CVE-2018-0732

References for CVE-2018-0732