Medium severity · published Aug 21, 2020
CVE-2020-8622
In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a…
6.5
CVSS
5.8%
EPSS
No
On KEV
Description
In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.8% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BI
Bind · Isc
9.0.0 through 9.11.21; 9.12.0 through 9.16.5; 9.17.0 through 9.17.3; 9.9.3; 9.11.21 · source: NVD
CD
Communications Diameter Signaling Router · Oracle
8.0.0 through 8.5.0 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
DS
Dns Server · Synology
before 2.2.2-5028 · source: NVD
FE
Fedora · Fedoraproject
31; 32 · 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
12.04; 14.04; 16.04; 18.04; 20.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8622
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8622
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-2020-8622
Mailing List
https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/
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