7.5

CVE-2020-8277: c-ares_project c-ares Uncontrolled Resource Consumption

Modified
AliasesALPINE-CVE-2020-8277SUSE-SU-2020:3478-1SUSE-SU-2020:3549-1
Published 19-11-2020Last modified 30-04-2025

Vulnerability summary

CVE-2020-8277 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in c-ares_project c-ares. EPSS estimates a 54.16% chance of exploitation in the next 30 days, higher than 99% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 54% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
54.16%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 10 · Related 6
OPENSUSE-SU-2021:0064-1OPENSUSE-SU-2021:0066-1OPENSUSE-SU-2024:10668-1OPENSUSE-SU-2024:11096-1RHSA-2020:5305RHSA-2020:5499

Timeline

  1. 19-11-2020
    PublishedVulnerability first disclosed.
  2. 30-04-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

54.16%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

No change 0.00 pp

From 54.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse7 products
  • c-ares&distro=SUSE Linux Enterprise High Performance Computing 15-ESPOS< 1.17.0-3.8.1
  • c-ares&distro=SUSE Linux Enterprise High Performance Computing 15-LTSS< 1.17.0-3.8.1
  • c-ares&distro=SUSE Linux Enterprise Module for Basesystem 15 SP1< 1.17.0-3.8.1
  • c-ares&distro=SUSE Linux Enterprise Module for Basesystem 15 SP2< 1.17.0-3.8.1
  • c-ares&distro=SUSE Linux Enterprise Server 15-LTSS< 1.17.0-3.8.1
Oracle5 products
Opensuse4 products
  • c-ares-tests&distro=openSUSE Leap 15.1< 1.17.0-lp151.3.6.1
  • c-ares-tests&distro=openSUSE Leap 15.2< 1.17.0-lp152.2.3.1
  • c-ares&distro=openSUSE Leap 15.1< 1.17.0-lp151.3.6.1
  • c-ares&distro=openSUSE Leap 15.2< 1.17.0-lp152.2.3.1
Alpine2 products
  • nodejs< 12.20.1-r0 | < 14.15.1-r0
  • nodejs-current< 15.3.0-r0
Nodejs2 products
  • node≥ 4.0, < 4.* | ≥ 5.0, < 5.* | ≥ 6.0, < 6.* | ≥ 7.0, < 7.* | ≥ 8.0, < 8.* | ≥ 9.0, < 9.* | ≥ 11.0, < 11.* | ≥ 12.0, < 12.19.1 | ≥ 13.0, < 13.* | ≥ 14.0, < 14.15.1 | ≥ 15.0, < 15.2.1
  • node.js≥ 12.16.3, < 12.19.1 | ≥ 14.13.0, < 14.15.1 | ≥ 15.0.0, < 15.2.1
C-ares_project1 product
Debian1 product
  • c-ares< 1.17.1-1
Fedoraproject1 product

8 vendors · 23 products

References

22 links
Show all 22 references