CVE-2020-12663: Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers

High severity · published May 19, 2020

CVE-2020-12663

Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers

7.5

CVSS

3.6%

EPSS

On KEV

Description

Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)3.6% · higher than 89% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Debian Linux · Debian

9.0; 10.0 · source: NVD

Fedora · Fedoraproject

31; 32 · source: NVD

Leap · Opensuse

15.1; 15.2 · source: NVD

Ubuntu Linux · Canonical

18.04; 19.10; 20.04 · source: NVD

Unbound · Nlnetlabs

before 1.10.1 · source: NVD

Affected product

Ubuntu Linux

Canonical

All Ubuntu Linux CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-12663

CVE.org

https://www.cve.org/CVERecord?id=CVE-2020-12663

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html

Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html

Mailing List

http://www.openwall.com/lists/oss-security/2020/05/19/5

Mailing List

https://lists.debian.org/debian-lts-announce/2021/02/msg00017.html

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ/

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YJ42N2HBZ3DXMSEC56SWIIOFQGOS5M7I/