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Ubuntu 15.10 USN-2925-1 Critical: Bind9 Denial Of Service

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Calendar Grey March 9, 2016
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Follow these steps to secure your Bind9 on Ubuntu from recent DoS vulnerabilities caused by crafted network traffic and ensure you're up to date
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 input received by the rndc

control channel. A remote attacker could possibly use this issue to cause

Bind to crash, resulting in a denial of service. (CVE-2016-1285)

It was discovered that Bind incorrectly parsed resource record signatures

for DNAME resource records. A remote attacker could possibly use this issue

to cause Bind to crash, resulting in a denial of service. (CVE-2016-1286)

Topics%20covered

Topics Covered

security advisory critical Ubuntu vulnerability remote threat Denial of Service bind9

Update Instructions

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

Ubuntu 15.10:
  bind9                           1:9.9.5.dfsg-11ubuntu1.3

Ubuntu 14.04 LTS:
  bind9                           1:9.9.5.dfsg-3ubuntu0.8

Ubuntu 12.04 LTS:
  bind9                           1:9.8.1.dfsg.P1-4ubuntu0.16

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

References

https://ubuntu.com/security/notices/USN-2925-1

CVE-2016-1285, CVE-2016-1286

Severity
critical
Lowest
Low
Medium
High
Critical

March 09, 2016

Topics%20covered

Topics Covered

security advisory critical Ubuntu vulnerability remote threat Denial of Service bind9

Package Information

https://launchpad.net/ubuntu/+source/bind9/1:9.9.5.dfsg-11ubuntu1.3
https://launchpad.net/ubuntu/+source/bind9/1:9.9.5.dfsg-3ubuntu0.8
https://launchpad.net/ubuntu/+source/bind9/1:9.8.1.dfsg.P1-4ubuntu0.16

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