High severity · published Aug 21, 2020
CVE-2020-8621
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…
7.5
CVSS
3%
EPSS
No
On KEV
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.
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)3.0% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BI
Bind · Isc
9.14.0 through 9.16.5; 9.17.0 through 9.17.3 · source: NVD
DS
Dns Server · Synology
before 2.2.2-5027 · source: NVD
LE
Leap · Opensuse
15.1; 15.2 · source: NVD
SC
Steelstore Cloud Integrated Storage · Netapp
All versions, or not specified · source: NVD
UL
Ubuntu Linux · Canonical
16.04; 18.04; 20.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8621
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8621
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html
Vendor Advisory
https://kb.isc.org/docs/cve-2020-8621
Third Party Advisory
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/
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