7.5

CVE-2020-8621

Attempting QNAME minimization after forwarding can lead to an assertion failure in resolver.c

In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is configured with both QNAME minimization and 'forward first' then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that 'forward only' are not affected.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Isc ≫ Bind Version >= 9.14.0 <= 9.16.5
Isc ≫ Bind Version >= 9.17.0 <= 9.17.3
Opensuse ≫ Leap Version 15.1
Opensuse ≫ Leap Version 15.2
Canonical ≫ Ubuntu Linux Version 16.04 SwEdition esm
Canonical ≫ Ubuntu Linux Version 18.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 20.04 SwEdition lts
Synology ≫ Dns Server Version < 2.2.2-5027
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 2.97% 0.858
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NIST 4.3 8.6 2.9
AV:N/AC:M/Au:N/C:N/I:N/A:P
ISC 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-617 Reachable Assertion

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
Third Party Advisory
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html
Third Party Advisory
Mailing List
https://security.gentoo.org/glsa/202008-19
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200827-0003/
Third Party Advisory
https://usn.ubuntu.com/4468-1/
Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_19
Third Party Advisory
https://kb.isc.org/docs/cve-2020-8621
Vendor Advisory