CVE catalog
CVE-2020-12663
unbound: CVE-2020-12663
- 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
- 3.59% · Oct 25, 2026
Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.
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 | unbound | sid | 1.26.2-1 | fixed |
| Debian | unbound | forky | 1.26.2-1 | fixed |
| Debian | unbound | trixie | 1.22.0-2+deb13u3 | fixed |
| Debian | unbound | trixie-security | 1.26.2-0+deb13u1 | fixed |
| Debian | unbound | bookworm | 1.17.1-2+deb12u4 | fixed |
| Debian | unbound | bookworm-security | 1.17.1-2+deb12u3 | fixed |
| Ubuntu | unbound | pro | 1.4.22-1ubuntu6 | vulnerable |
| Ubuntu | unbound | pro | 1.5.7-1ubuntu1 | vulnerable |
| Ubuntu | unbound | pro | 1.5.7-1ubuntu2 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1+esm1 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1+esm2 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1+esm3 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1+esm4 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1+esm5 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.5-1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1build1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.2 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.3 | fixed |
| Ubuntu | unbound | 20.04 | 1.9.0-2ubuntu1 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.0-2ubuntu2 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2ubuntu1 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2ubuntu1.1 | fixed |
| Alpine | unbound | 3.10 | 1.9.1-r8 | fixed |
| Alpine | unbound | 3.11 | 1.9.6-r1 | fixed |
| Alpine | unbound | 3.12 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.13 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.14 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.15 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.16 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.17 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.18 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.19 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.20 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.21 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.22 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.23 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.24 | 1.10.1-r0 | fixed |
| Alpine | unbound | 3.9 | 1.8.3-r4 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | unbound | source | sid | 1.10.1-1 | not yet assigned | Not reported | Not reported |
| Debian | unbound | source | forky | 1.10.1-1 | not yet assigned | Not reported | Not reported |
| Debian | unbound | source | trixie | 1.10.1-1 | not yet assigned | Not reported | Not reported |
| Debian | unbound | source | bookworm | 1.10.1-1 | not yet assigned | Not reported | Not reported |
| Ubuntu | unbound | deb | 18.04 | 1.6.7-1ubuntu2.3 | Not reported | UBUNTU-CVE-2020-12663 | Not reported |
| Ubuntu | unbound | deb | 20.04 | 1.9.4-2ubuntu1.1 | Not reported | UBUNTU-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.10 | 1.9.1-r8 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.11 | 1.9.6-r1 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.12 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.13 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.14 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.15 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.16 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.17 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.18 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.19 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.20 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.21 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.22 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.23 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.24 | 1.10.1-r0 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
| Alpine | unbound | apk | 3.9 | 1.8.3-r4 | Not reported | ALPINE-CVE-2020-12663 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libunbound8]Unknown
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
- [libunbound-dev]Unknown
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
- [python3-unbound]Unknown
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
- [unbound]Unknown
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
- [unbound-anchor]Unknown
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
- [unbound-host]Unknown
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · bookworm; dsa · unbound · debian · 12
[Debian 13 (Trixie)]
- [libunbound8]Unknown
Source package: [unbound]
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
- [libunbound-dev]Unknown
Source package: [unbound]
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
- [python3-unbound]Unknown
Source package: [unbound]
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
- [unbound]Unknown
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
- [unbound-anchor]Unknown
Source package: [unbound]
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
- [unbound-host]Unknown
Source package: [unbound]
Details (6)
1.22.0-2+deb13u3· amd64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixieFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.22.0-2+deb13u3· arm64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.1-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
1.26.2-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.10.1-1dsa · unbound · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2020_2414.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2020-12663]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-12663]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-12663]
- [https://security-tracker.debian.org/tracker/CVE-2020-12663]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-12663.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]