USN-4929-1: Bind vulnerabilities

Packages

bind9 - Internet Domain Name Server

Details

Greg Kuechle discovered that Bind incorrectly handled certain incremental
zone updates. A remote attacker could possibly use this issue to cause Bind
to crash, resulting in a denial of service. (CVE-2021-25214)

Siva Kakarla discovered that Bind incorrectly handled certain DNAME
records. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. (CVE-2021-25215)

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.
(CVE-2021-25216)

Greg Kuechle discovered that Bind incorrectly handled certain incremental
zone updates. A remote attacker could possibly use this issue to cause Bind
to crash, resulting in a denial of service. (CVE-2021-25214)

Siva Kakarla discovered that Bind incorrectly handled certain DNAME
records. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. (CVE-2021-25215)

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.
(CVE-2021-25216)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

Ubuntu Release	Package Version
21.04 hirsute	bind9 – 1:9.16.8-1ubuntu3.1
20.10 groovy	bind9 – 1:9.16.6-3ubuntu1.2
20.04 focal	bind9 – 1:9.16.1-0ubuntu2.8
18.04 bionic	bind9 – 1:9.11.3+dfsg-1ubuntu1.15
16.04 xenial	bind9 – 1:9.10.3.dfsg.P4-8ubuntu1.19

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Packages

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References