CVE-2020-8622
moderate-risk
Published 2020-08-21
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.
Do I need to act?
~
2.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10
Medium
NETWORK
/ LOW complexity
Affected Products (17)
References (26)
Vendor Advisory
https://kb.isc.org/docs/cve-2020-8622
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/
Third Party Advisory
https://usn.ubuntu.com/4468-2/
Third Party Advisory
https://www.debian.org/security/2020/dsa-4752
Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_19
Vendor Advisory
https://kb.isc.org/docs/cve-2020-8622
Third Party Advisory
https://security.gentoo.org/glsa/202008-19
and 6 more references
49
/ 100
moderate-risk
Severity
24/34 · High
Exploitability
6/34 · Minimal
Exposure
19/34 · Moderate