CVE catalog
CVE-2020-8277
c-ares: CVE-2020-8277
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 54.16% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | c-ares | sid | 1.34.9-1 | fixed |
| Debian | c-ares | forky | 1.34.8-1 | fixed |
| Debian | c-ares | trixie | 1.34.5-1+deb13u1 | fixed |
| Debian | c-ares | trixie-security | 1.34.5-1+deb13u1 | fixed |
| Debian | c-ares | bookworm | 1.18.1-3 | fixed |
| Alpine | nodejs | 3.11 | 12.20.1-r0 | fixed |
| Alpine | nodejs | 3.12 | 12.20.1-r0 | fixed |
| Alpine | nodejs | 3.13 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.14 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.15 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.16 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.17 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.18 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.19 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.20 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.21 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.22 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.23 | 14.15.1-r0 | fixed |
| Alpine | nodejs | 3.24 | 14.15.1-r0 | fixed |
| Opensuse | c-ares | leap 15.1 | 1.17.0-lp151.3.6.1 | fixed |
| Opensuse | c-ares-tests | leap 15.1 | 1.17.0-lp151.3.6.1 | fixed |
| Opensuse | c-ares | leap 15.2 | 1.17.0-lp152.2.3.1 | fixed |
| Opensuse | c-ares-tests | leap 15.2 | 1.17.0-lp152.2.3.1 | fixed |
| Suse | nodejs12 | linux enterprise module for web and scripting 12 | 12.19.1-1.23.1 | fixed |
| Suse | c-ares | linux enterprise module for basesystem 15 sp1 | 1.17.0-3.8.1 | fixed |
| Suse | c-ares | linux enterprise module for basesystem 15 sp2 | 1.17.0-3.8.1 | fixed |
| Suse | c-ares | linux enterprise high performance computing 15-espos | 1.17.0-3.8.1 | fixed |
| Suse | c-ares | linux enterprise high performance computing 15-ltss | 1.17.0-3.8.1 | fixed |
| Suse | c-ares | linux enterprise server 15-ltss | 1.17.0-3.8.1 | fixed |
| Suse | c-ares | linux enterprise server for sap applications 15 | 1.17.0-3.8.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | c-ares | source | sid | 1.17.1-1 | not yet assigned | Not reported | Not reported |
| Debian | c-ares | source | forky | 1.17.1-1 | not yet assigned | Not reported | Not reported |
| Debian | c-ares | source | trixie | 1.17.1-1 | not yet assigned | Not reported | Not reported |
| Debian | c-ares | source | bookworm | 1.17.1-1 | not yet assigned | Not reported | Not reported |
| Alpine | nodejs | apk | 3.11 | 12.20.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.12 | 12.20.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.13 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.14 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.15 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.16 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.17 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.18 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.19 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.20 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.21 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.22 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.23 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Alpine | nodejs | apk | 3.24 | 14.15.1-r0 | Not reported | ALPINE-CVE-2020-8277 | Not reported |
| Opensuse | c-ares | rpm | leap 15.1 | 1.17.0-lp151.3.6.1 | Not reported | OPENSUSE-SU-2020:2045-1 | Not reported |
| Opensuse | c-ares-tests | rpm | leap 15.1 | 1.17.0-lp151.3.6.1 | Not reported | OPENSUSE-SU-2020:2045-1 | Not reported |
| Opensuse | c-ares | rpm | leap 15.2 | 1.17.0-lp152.2.3.1 | Not reported | OPENSUSE-SU-2020:2092-1 | Not reported |
| Opensuse | c-ares-tests | rpm | leap 15.2 | 1.17.0-lp152.2.3.1 | Not reported | OPENSUSE-SU-2020:2092-1 | Not reported |
| Suse | nodejs12 | rpm | linux enterprise module for web and scripting 12 | 12.19.1-1.23.1 | Not reported | SUSE-SU-2020:3549-1 | Not reported |
| Suse | c-ares | rpm | linux enterprise module for basesystem 15 sp1 | 1.17.0-3.8.1 | Not reported | SUSE-SU-2020:3478-1 | Not reported |
| Suse | c-ares | rpm | linux enterprise module for basesystem 15 sp2 | 1.17.0-3.8.1 | Not reported | SUSE-SU-2020:3478-1 | Not reported |
| Suse | c-ares | rpm | linux enterprise high performance computing 15-espos | 1.17.0-3.8.1 | Not reported | SUSE-SU-2020:3478-1 | Not reported |
| Suse | c-ares | rpm | linux enterprise high performance computing 15-ltss | 1.17.0-3.8.1 | Not reported | SUSE-SU-2020:3478-1 | Not reported |
| Suse | c-ares | rpm | linux enterprise server 15-ltss | 1.17.0-3.8.1 | Not reported | SUSE-SU-2020:3478-1 | Not reported |
| Suse | c-ares | rpm | linux enterprise server for sap applications 15 | 1.17.0-3.8.1 | Not reported | SUSE-SU-2020:3478-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libc-ares2]Unknown
Source package: [c-ares]
Details (2)
1.18.1-3· amd64 · bookwormFixed · Fixed:
1.17.1-1dsa · c-ares · debian · bookworm; dsa · c-ares · debian · 12
1.18.1-3· arm64 · bookwormFixed · Fixed:
1.17.1-1dsa · c-ares · debian · bookworm; dsa · c-ares · debian · 12
- [libc-ares-dev]Unknown
Source package: [c-ares]
Details (2)
1.18.1-3· amd64 · bookwormFixed · Fixed:
1.17.1-1dsa · c-ares · debian · bookworm; dsa · c-ares · debian · 12
1.18.1-3· arm64 · bookwormFixed · Fixed:
1.17.1-1dsa · c-ares · debian · bookworm; dsa · c-ares · debian · 12
[Debian 13 (Trixie)]
- [libc-ares2]Unknown
Source package: [c-ares]
Details (4)
1.34.5-1+deb13u1· all · trixieFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· all · trixieFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· all · trixie-securityFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· all · trixie-securityFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
- [libcares2]Unknown
Source package: [c-ares]
Details (4)
1.34.5-1+deb13u1· amd64 · trixieFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· arm64 · trixieFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
- [libc-ares-dev]Unknown
Source package: [c-ares]
Details (4)
1.34.5-1+deb13u1· amd64 · trixieFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· arm64 · trixieFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.17.1-1dsa · c-ares · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2020_5499.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2020-8277]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-8277]
- [https://osv.dev/vulnerability/SUSE-SU-2020:3478-1]
- [https://osv.dev/vulnerability/SUSE-SU-2020:3549-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2020:2045-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2020:2092-1]
- [https://security-tracker.debian.org/tracker/CVE-2020-8277]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-8277.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2020/wid-sec-w-2026-3126.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]