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Fencer Vulns
high 7.5

CVE-2020-8277 in the critical feed json

A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in vers…

published 2020-11-19 5 y ago modified 2026-09-08 2 mo ago also BIT-node-2020-8277 , BIT-node-min-2020-8277 , EUVD-2020-29145

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
54.2%
EPSS 54.2% chance of exploitation in 30 days, percentile 99%
public exploits
0
none known

Summary

A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in versions < 15.2.1, < 14.15.1, and < 12.19.1 by getting the application to resolve a DNS record with a larger number of responses. This is fixed in 15.2.1, 14.15.1, and 12.19.1.

Patch / fix

  • bitnami node 12.19.1, 14.15.1, 15.2.1
  • bitnami node-min 12.19.1, 14.15.1, 15.2.1
  • NodeJS Node 12.19.1, 14.15.1, 15.2.1
  • c-ares Debian 14, Debian 13, Debian 12 1.17.1-1

debian advisories DEBIAN-CVE-2020-8277

  • npm RHEL 8 1:6.14.10-1.14.15.4.2.module+el8.3.0+9635+ffdf8381
  • nodejs RHEL 8 1:14.15.4-2.module+el8.3.0+9635+ffdf8381
  • nodejs-nodemon RHEL 8 2.0.3-1.module+el8.3.0+6519+9f98ed83
  • nodejs-full-i18n RHEL 8 1:14.15.4-2.module+el8.3.0+9635+ffdf8381
  • nodejs-packaging RHEL 8 23-3.module+el8.3.0+6519+9f98ed83
  • rh-nodejs12-nodejs RHEL 3 SOFTWARE_COLLECTIONS 12.19.1-2.el7
  • rh-nodejs12-npm RHEL 3 SOFTWARE_COLLECTIONS 6.14.8-12.19.1.2.el7
  • rh-nodejs14-nodejs RHEL 3 SOFTWARE_COLLECTIONS 14.15.4-2.el7

red hat advisories RHSA-2021:0551RHSA-2020:5305RHSA-2021:0421RHSA-2020:5499

  • nodejs12 SLE Module for Web and Scripting 15 SP2 12.20.1-4.10.1
  • nodejs14 SLE Module for Web and Scripting 15 SP2 14.15.4-5.6.1
  • nodejs12 SLE Module for Web and Scripting 12 12.19.1-1.23.1
  • c-ares SLES for SAP 15, SLES 15-LTSS, SLE Module for Basesystem 15 SP2 +3 more 1.17.0-3.8.1

suse advisories SUSE-SU-2021:0062-1SUSE-SU-2021:0061-1SUSE-SU-2020:3549-1SUSE-SU-2020:3478-1

  • c-ares openSUSE Tumbleweed 1.17.2-2.2
  • nodejs14 openSUSE Tumbleweed 14.17.5-1.2
  • nodejs14 openSUSE Leap 15.2 14.15.4-lp152.5.1
  • nodejs12 openSUSE Leap 15.2 12.20.1-lp152.3.9.1
  • c-ares openSUSE Leap 15.2 1.17.0-lp152.2.3.1
  • c-ares-tests openSUSE Leap 15.2 1.17.0-lp152.2.3.1
  • c-ares openSUSE Leap 15.1 1.17.0-lp151.3.6.1
  • c-ares-tests openSUSE Leap 15.1 1.17.0-lp151.3.6.1

opensuse advisories openSUSE-SU-2024:10668-1openSUSE-SU-2024:11096-1openSUSE-SU-2021:0066-1openSUSE-SU-2021:0064-1openSUSE-SU-2020:2092-1openSUSE-SU-2020:2045-1

  • nodejs-nodemon AlmaLinux 8 2.0.3-1.module_el8.4.0+2521+c668cc9f
  • nodejs-packaging AlmaLinux 8 23-3.module_el8.5.0+254+b4526b16
  • nodejs-packaging AlmaLinux 8 23-3.module_el8.4.0+2522+3bd42762
  • nodejs-nodemon AlmaLinux 8 1.18.3-1.module_el8.3.0+2023+d2377ea3
  • nodejs-nodemon AlmaLinux 8 1.18.3-1.module_el8.3.0+2047+b07ac28e
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.4.0+2224+b07ac28e
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.4.0+2521+c668cc9f
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.3.0+2023+d2377ea3

almalinux advisories ALSA-2021:0551ALSA-2020:5499

  • nodejs-nodemon Rocky Linux 8 2.0.3-1.module+el8.6.0+982+9fdca2d4
  • nodejs-nodemon Rocky Linux 8 2.0.3-1.module+el8.3.0+100+234774f7
  • nodejs-nodemon Rocky Linux 8 2.0.3-1.module+el8.4.0+638+5344c6f7
  • nodejs-packaging Rocky Linux 8 23-3.module+el8.7.0+1071+4bdda2a8
  • nodejs-packaging Rocky Linux 8 23-3.module+el8.3.0+100+234774f7
  • nodejs-packaging Rocky Linux 8 23-3.module+el8.5.0+733+de4fee6c
  • nodejs-nodemon Rocky Linux 8 1.18.3-1.module+el8.3.0+101+f84c7154
  • nodejs-packaging Rocky Linux 8 17-3.module+el8.3.0+101+f84c7154

rocky linux advisories RLSA-2021:0551RLSA-2020:5499

  • nodejs Alpine 3.12, Alpine 3.11 12.20.1-r0
  • nodejs Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 14.15.1-r0
  • nodejs-current Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 15.3.0-r0

alpine advisories ALPINE-CVE-2020-8277

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python-gevent CBL-Mariner 2.0 21.1.2-3

azure linux advisories AZL-32281

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

  • c-ares Arch Linux 1.17.1-1

arch linux advisories AVG-1280

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-2020-8277 updated cvss 7.5

c-ares: ares_parse_{a,aaaa}_reply() insufficient naddrttls validation DoS

  • Red Hat Enterprise Linux AppStream (v. 8) nodejs 12.19.1-1.module+el8.3.0+8851+b7b41ca0, nodejs 14.15.4-2.module+el8.3.0+9635+ffdf8381, nodejs-packaging 17-3.module+el8.1.0+3369+37ae6a45, nodejs-packaging 23-3.module+el8.3.0+6519+9f98ed83, nodejs-nodemon 2.0.3-1.module+el8.3.0+6519+9f98ed83, npm 6.14.8-1.12.19.1.1.module+el8.3.0+8851+b7b41ca0, +4 more
    fixed: vendor fix RHSA-2020:5499
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-nodejs12-nodejs 12.19.1-2.el7, rh-nodejs14-nodejs 14.15.4-2.el7, rh-nodejs12-npm 6.14.8-12.19.1.2.el7, rh-nodejs14-npm 6.14.10-14.15.4.2.el7 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-nodejs12-nodejs 12.19.1-2.el7, rh-nodejs14-nodejs 14.15.4-2.el7, rh-nodejs12-npm 6.14.8-12.19.1.2.el7, rh-nodejs14-npm 6.14.10-14.15.4.2.el7 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-nodejs12-nodejs 12.19.1-2.el7, rh-nodejs14-nodejs 14.15.4-2.el7, rh-nodejs12-npm 6.14.8-12.19.1.2.el7, rh-nodejs14-npm 6.14.10-14.15.4.2.el7 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-nodejs12-nodejs 12.19.1-2.el7, rh-nodejs14-nodejs 14.15.4-2.el7, rh-nodejs12-npm 6.14.8-12.19.1.2.el7, rh-nodejs14-npm 6.14.10-14.15.4.2.el7
    fixed: vendor fix RHSA-2020:5305
  • Red Hat Enterprise Linux 5 c-ares Red Hat Enterprise Linux 6 c-ares Red Hat Enterprise Linux 7 c-ares Red Hat Enterprise Linux 8 npm, c-ares, nodejs, nodejs-libs, nodejs-nodemon, nodejs-full-i18n, +2 more Red Hat Software Collections rh-nodejs10-npm, 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

Exploit prediction

54.16% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami node
>=12.16.3, <12.19.1
>=14.13.0, <14.15.1
>=15.0.0, <15.2.1
12.19.1
14.15.1
15.2.1
bitnami node-min
>=12.16.3, <12.19.1
>=14.13.0, <14.15.1
>=15.0.0, <15.2.1
12.19.1
14.15.1
15.2.1

Affected products

  • NodeJS Node

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
Technology feeds

References

Sources

Fencer Vulns 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.