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

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

Published 2020-05-19 14:15:11

Updated 2021-02-17 20:58:48

Source MITRE

View at NVD, CVE.org

Threat overview for CVE-2020-12663

Top countries where our scanners detected CVE-2020-12663

Top open port discovered on systems with this issue 53

IPs affected by CVE-2020-12663 7,017

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2020-12663!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-12663

Probability of exploitation activity in the next 30 days: 1.72%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 88 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2020-12663

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2020-12663

CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-12663

https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt

Vendor Advisory

CVEs referencing this url
http://www.openwall.com/lists/oss-security/2020/05/19/5

oss-security - Unbound - CVE-2020-12662, CVE-2020-12663
Mailing List;Patch;Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ/

[SECURITY] Fedora 32 Update: unbound-1.10.1-1.fc32 - package-announce - Fedora Mailing-Lists
Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YJ42N2HBZ3DXMSEC56SWIIOFQGOS5M7I/

[SECURITY] Fedora 31 Update: unbound-1.10.1-1.fc31 - package-announce - Fedora Mailing-Lists
Third Party Advisory

CVEs referencing this url
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html

[security-announce] openSUSE-SU-2020:0912-1: important: Security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2021/02/msg00017.html

[SECURITY] [DLA 2556-1] unbound1.9 security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://usn.ubuntu.com/4374-1/

USN-4374-1: Unbound vulnerabilities | Ubuntu security notices
Third Party Advisory

CVEs referencing this url
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:19.unbound.asc

Third Party Advisory

CVEs referencing this url
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html

[security-announce] openSUSE-SU-2020:0913-1: important: Security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://www.debian.org/security/2020/dsa-4694

Debian -- Security Information -- DSA-4694-1 unbound
Third Party Advisory

CVEs referencing this url

Products affected by CVE-2020-12663