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CVE-2020-8621

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

Published: Aug 21, 2020Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-617
7.5HIGH
NVD MITRE
EPSS Score
2.9%
Top 14.6%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-617

Affected Products

ISC
commercial·USaka internet systems consortium
bind
Networking Infrastructure
BIND9
Networking Infrastructure
opensuse
oss-project·DE
leapOn-premOS
Operating Systems / linux-distro
Canonical Ltd.
commercial·GBaka canonical
UbuntuOn-premOS
Operating Systems / linux-distro
synology
commercial·USaka diskstation manager (dsm), router manager
dns serverOn-premNetwork Device
Networking Infrastructure / dns-dhcp-ntp
netapp
commercial·US
steelstore cloud integrated storage
Hardware Firmware
Novell Inc.
commercial·US
OpenSUSE LeapOn-premOS
Operating Systems / linux-distro
and 2 more affected products View all →

Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html
lists.opensuse.org
https://kb.isc.org/docs/cve-2020-8621
kb.isc.org
and 5 more references View all →
News mentions
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