CVE-2018-0732
Client DoS due to large DH parameter
At a glance
- Severity
- Not available
- EPSS
- EPSS 47.01 % · percentile 99 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- openssl
- NVD status
- Modified
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).
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2018-1542
- GCVE · GCVE-0-2018-0732
CERT-FR advisories
- CERTFR-2022-AVI-267 — Multiples vulnérabilités dans Juniper Networks Junos Space · cert.ssi.gouv.fr
- CERTFR-2021-AVI-442 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2020-AVI-691 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
- CERTFR-2020-AVI-198 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
- CERTFR-2020-AVI-015 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
- CERTFR-2019-AVI-510 — Multiples vulnérabilités dans Oracle Systems · cert.ssi.gouv.fr
- CERTFR-2019-AVI-325 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
- CERTFR-2019-AVI-025 — Multiples vulnérabilités dans Oracle MySQL · cert.ssi.gouv.fr
- CERTFR-2019-AVI-014 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
- CERTFR-2018-AVI-607 — Multiples vulnérabilités dans Tenable Nessus · cert.ssi.gouv.fr
- CERTFR-2018-AVI-589 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2018-AVI-511 — Vulnérabilité dans les produits Tenable · cert.ssi.gouv.fr
- CERTFR-2018-AVI-497 — Multiples vulnérabilités dans Oracle Virtualization · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*≥ 1.0.2 ≤ 1.0.2ocpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*≥ 1.1.0 ≤ 1.1.0hcpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*≥ 6.0.0 < 6.8.1cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*≥ 6.9.0 < 6.14.4cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*≥ 8.0.0 < 8.8.1cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*≥ 8.9.0 < 8.11.4cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*≥ 10.0.0 < 10.9.0
Affected products
| Product | Versions |
|---|---|
| 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) |
References
- https://lists.debian.org/debian-lts-announce/2018/07/msg00043.html
- http://www.securityfocus.com/bid/104442
- https://www.debian.org/security/2018/dsa-4355
- https://access.redhat.com/errata/RHSA-2018:2552
- https://security.gentoo.org/glsa/201811-03
- https://usn.ubuntu.com/3692-2/
- https://access.redhat.com/errata/RHSA-2018:2553
- https://access.redhat.com/errata/RHSA-2018:3505
- https://usn.ubuntu.com/3692-1/
- https://access.redhat.com/errata/RHSA-2018:3221
- https://www.debian.org/security/2018/dsa-4348
- http://www.securitytracker.com/id/1041090
- https://access.redhat.com/errata/RHSA-2019:1297
- https://access.redhat.com/errata/RHSA-2019:1296
- https://access.redhat.com/errata/RHSA-2019:1543
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/
- https://www.oracle.com/security-alerts/cpuapr2020.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://www.oracle.com/security-alerts/cpujan2021.html
- https://www.tenable.com/security/tns-2018-14
- https://securityadvisories.paloaltonetworks.com/Home/Detail/133
- https://www.tenable.com/security/tns-2018-13
- https://www.tenable.com/security/tns-2018-17
- https://www.tenable.com/security/tns-2018-12
- https://security.netapp.com/advisory/ntap-20181105-0001/
- https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=3984ef0b72831da8b3ece4745cac4f8575b19098
- https://www.openssl.org/news/secadv/20180612.txt
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=ea7abeeabf92b7aca160bdd0208636d4da69f4f4
- https://security.netapp.com/advisory/ntap-20190118-0002/
- https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |