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Fencer Intel
high 8.1

CVE-2018-12120 json

Node.js: All versions prior to Node.js 6.15.0: Debugger port 5858 listens on any interface by default: When the debugger is enabled with `n…

published 7y ago modified last mo. also EUVD-2018-4098

cvss
8.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.3%
EPSS 4.3% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

Node.js: All versions prior to Node.js 6.15.0: Debugger port 5858 listens on any interface by default: When the debugger is enabled with `node --debug` or `node debug`, it listens to port 5858 on all interfaces by default. This may allow remote computers to attach to the debug port and evaluate arbitrary JavaScript. The default interface is now localhost. It has always been possible to start the debugger on a specific interface, such as `node --debug=localhost`. The debugger was removed in Node.js 8 and replaced with the inspector, so no versions from 8 and later are vulnerable.

Patch / fix

  • nodejs node.js 6.15.0
  • nodejs Debian 14, Debian 13, Debian 12 8.9.3~dfsg-5

debian advisories DEBIAN-CVE-2018-12120

  • nodejs6 SLE Module for Web and Scripting 12, OpenStack Cloud Crowbar 8, OpenStack Cloud 7 +1 more 6.16.0-11.21.1
  • nodejs4 SLE Module for Web and Scripting 12, Enterprise Storage 4 4.9.1-15.17.1

suse advisories SUSE-SU-2019:0395-1SUSE-SU-2019:0117-1

Is CVE-2018-12120 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-12120 updated cvss 7.3

nodejs: Debugger port 5858 listens on any interface by default

  • Red Hat OpenShift Container Platform 3.2 nodejs Red Hat OpenShift Container Platform 3.3 nodejs Red Hat OpenShift Container Platform 3.4 nodejs Red Hat OpenShift Container Platform 3.5 nodejs Red Hat OpenShift Container Platform 3.6 nodejs Red Hat OpenShift Container Platform 3.7 nodejs
    affected: workaround, no fix planned “* On any version : Ensure the firewall prevents access to port 5858 on untrusted interfaces. * On nodejs 6 : To enforce the debug on a specific interface: $ node --debug=localhost”
  • Red Hat OpenShift Container Platform 3.9 nodejs Red Hat OpenShift Container Platform 3.10 nodejs
    affected: workaround, no fix available “* On any version : Ensure the firewall prevents access to port 5858 on untrusted interfaces. * On nodejs 6 : To enforce the debug on a specific interface: $ node --debug=localhost”
  • Red Hat Software Collections rh-nodejs4-nodejs, rh-nodejs6-nodejs
    affected: workaround, no fix planned “* On any version : Ensure the firewall prevents access to port 5858 on untrusted interfaces. * On nodejs 6 : To enforce the debug on a specific interface: $ node --debug=localhost”
  • Red Hat Enterprise Linux 8 npm, nodejs, nodejs-libs, nodejs-nodemon, nodejs-full-i18n, nodejs-packaging, +1 more Red Hat OpenShift Application Runtimes nodejs Red Hat Software Collections rh-nodejs8-npm, rh-nodejs10-npm, rh-nodejs8-nodejs, rh-nodejs10-nodejs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
last mo.

Exploit prediction

4.28% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • The Node.js Project Node.js

Classification

Weakness
  • CWE-419 Unprotected Primary Channel
  • CWE-829 Inclusion of Functionality from Untrusted Control Sphere
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.