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Ubuntu 19.10 Advisory USN-4197-1 Critical: Bind DoS Threat

ubuntu
Calendar Grey November 21, 2019
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-4200-1 outlines a critical vulnerability in OpenSSL impacting various versions. Upgrade promptly to enhance security.
Bind could be made to consume resources if it received specially crafted network traffic.

Summary

Bind could be made to consume resources if it received specially crafted

network traffic.

Software Description:

- bind9: Internet Domain Name Server

Details:

It was discovered that Bind incorrectly handled certain TCP-pipelined

queries. A remote attacker could possibly use this issue to cause Bind to

consume resources, resulting in a denial of service.

Topics%20covered

Topics Covered

security advisory denial of service ubuntu bind9 resource consumption

Update Instructions

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

Ubuntu 19.10:
  bind9                           1:9.11.5.P4+dfsg-5.1ubuntu2.1

Ubuntu 19.04:
  bind9                           1:9.11.5.P1+dfsg-1ubuntu2.6

Ubuntu 18.04 LTS:
  bind9                           1:9.11.3+dfsg-1ubuntu1.11

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

References

https://ubuntu.com/security/notices/USN-4197-1

CVE-2019-6477

Severity
critical
Lowest
Low
Medium
High
Critical

November 21, 2019

Topics%20covered

Topics Covered

security advisory denial of service ubuntu bind9 resource consumption

Package Information

https://launchpad.net/ubuntu/+source/bind9/1:9.11.5.P4+dfsg-5.1ubuntu2.1
https://launchpad.net/ubuntu/+source/bind9/1:9.11.5.P1+dfsg-1ubuntu2.6
https://launchpad.net/ubuntu/+source/bind9/1:9.11.3+dfsg-1ubuntu1.11

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