CVE-2020-12663: canonical ubuntu_linux Infinite Loop
CVSS: 7.5v3.1HighModified
AliasesALPINE-CVE-2020-12663UBUNTU-CVE-2020-12663DEBIAN-CVE-2020-12663
Published 19-05-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-12663 is a high (CVSS 7.5) Infinite Loop vulnerability in canonical ubuntu_linux. EPSS estimates a 3.59% chance of exploitation in the next 30 days, higher than 89.2% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
3.59%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 15 · Related 6Timeline
- 19-05-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
3.59%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
0.00 pp
From 3.59% on 19-09-2026
19-09-202619-10-2026
EPSS score3.59%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- unbound< 1.10.1-1
- debian_linuxEOL9.0 | 10.0
Alpine1 product
- unbound< 1.9.1-r8 | < 1.9.6-r1 | < 1.10.1-r0 | < 1.8.3-r4
Canonical1 product
- ubuntu_linuxEOL18.04 | 19.10 | 20.04
Fedoraproject1 product
- fedoraEOL31 | 32
Nlnetlabs1 product
- unbound< 1.10.1
Opensuse1 product
- leapEOL15.1 | 15.2
Ubuntu1 product
- unboundAll versions (No fix recorded) | < 1.6.7-1ubuntu2.3 | < 1.9.4-2ubuntu1.1
7 vendors · 8 products
References
17 links- www.openwall.com/lists/oss-security/2020/05/19/5Mailing ListX Refsource MLISTPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- security.freebsd.org/advisories/FreeBSD-SA-20:19.unbound.ascVendor AdvisoryX Refsource FREEBSDThird Party Advisory
- lists.debian.org/debian-lts-announce/2021/02/msg00017.htmlMailing ListX Refsource MLISTThird Party Advisory
