USN-5827-1: Bind vulnerabilities

Releases

• Ubuntu 22.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages

• bind9 - Internet Domain Name Server

Details

Rob Schulhof discovered that Bind incorrectly handled a large number of
UPDATE messages. A remote attacker could possibly use this issue to cause
Bind to consume resources, resulting in a denial of service.
(CVE-2022-3094)

Borja Marcos discovered that Bind incorrectly handled certain RRSIG
queries. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. This issue only affected Ubuntu
22.04 LTS and Ubuntu 22.10. (CVE-2022-3736)

Maksym Odinintsev discovered that Bind incorrectly handled certain answers
from stale cache. A remote attacker could possibly use this issue to cause
Bind to crash, resulting in a denial of service. This issue only affected
Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-3924)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 22.10

• bind9 - 1:9.18.4-2ubuntu2.1

Ubuntu 22.04

• bind9 - 1:9.18.1-1ubuntu1.3

Ubuntu 20.04

• bind9 - 1:9.16.1-0ubuntu2.12

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

References

• CVE-2022-3094
• CVE-2022-3924
• CVE-2022-3736