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Ubuntu 18.04, 16.04, 14.04: USN-6421-1 Critical Bind DoS Attack

ubuntu
Calendar Grey October 9, 2023
Dist Ubuntu Esm H88
The Ubuntu Security Announcement USN-6422-1 highlights a vulnerability in OpenSSH that could lead to unauthorized access through manipulated inputs in various versions.
Bind could be made to crash if it received specially crafted network traffic.

Summary

Bind could be made to crash if it received specially crafted network

traffic.

Software Description:

- bind9: Internet Domain Name Server

Details:

It was discovered that Bind incorrectly handled certain control channel

messages. A remote attacker with access to the control channel could

possibly use this issue to cause Bind to crash, resulting in a denial of

service.

Topics%20covered

Topics Covered

security advisory denial of service critical issue network traffic ubuntu bind9

Update Instructions

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   bind9 1:9.11.3+dfsg-1ubuntu1.19+esm2
   libbind9-160                    1:9.11.3+dfsg-1ubuntu1.19+esm2

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   bind9 1:9.10.3.dfsg.P4-8ubuntu1.19+esm7
   libbind9-140  1:9.10.3.dfsg.P4-8ubuntu1.19+esm7

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   bind9 1:9.9.5.dfsg-3ubuntu0.19+esm11
   libbind9-90                     1:9.9.5.dfsg-3ubuntu0.19+esm11

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

References

  https://ubuntu.com/security/notices/USN-6421-1

  CVE-2023-3341

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6421-1

Topics%20covered

Topics Covered

security advisory denial of service critical issue network traffic ubuntu bind9

Package Information

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