Vulnerability in Node.js
CVE-2018-0732
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 · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.488 (98.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.488 · newest: 0.488 · change: 0.000
Affected products
- Node.js
- OpenSSL — versions Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o), Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h)
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.debian.org/debian-lts-announce/2018/07/msg00043.html (mailing-list, Third Party Advisory)
- www.securityfocus.com/bid/104442 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2018/dsa-4355 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2552 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201811-03 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3692-2/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2553 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:3505 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3692-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:3221 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-0732?
- CVE-2018-0732 is a high-severity vulnerability in Node.js, classified under CWE-320. CVSS score: 7.5/10. Published 2018-06-12.
- How severe is CVE-2018-0732?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-0732 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.