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AUSCERT External Security Bulletin Redistribution
USN-4737-1: Bind vulnerability
19 February 2021
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2020-8625
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USN-4737-1: Bind vulnerability
18 February 2021
Bind could be made to crash or run programs if it received specially
crafted network traffic.
o Ubuntu 20.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
o bind9 - Internet Domain Name Server
It was discovered that Bind incorrectly handled GSSAPI security policy
negotiation. A remote attacker could use this issue to cause Bind to crash,
resulting in a denial of service, or possibly execute arbitrary code. In
the default installation, attackers would be isolated by the Bind AppArmor
The problem can be corrected by updating your system to the following package
o bind9 - 1:9.16.6-3ubuntu1.1
o bind9 - 1:9.16.1-0ubuntu2.6
o bind9 - 1:9.11.3+dfsg-1ubuntu1.14
o bind9 - 1:9.10.3.dfsg.P4-8ubuntu1.18
In general, a standard system update will make all the necessary changes.
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