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Ubuntu 14.04 ESM USN-4737-2 Critical: Bind Denial of Service

ubuntu
Calendar Grey March 1, 2021
Dist Ubuntu Esm H88
A bind vulnerability in Ubuntu may lead to service outages or permit unauthorized remote code execution via specially designed traffic. Discover further details within.
Bind could be made to crash or run programs if it received specially crafted network traffic.

Summary

Bind could be made to crash or run programs if it received specially

crafted network traffic.

Software Description:

- bind9: Internet Domain Name Server

Details:

USN-4737-1 fixed a vulnerability in Bind. This update provides

the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

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. In

the default installation, attackers would be isolated by the Bind AppArmor

profile.

Topics%20covered

Topics Covered

security advisory denial of service denial service critical bind network traffic ubuntu network attack

Update Instructions

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

Ubuntu 14.04 ESM:
  bind9                           1:9.9.5.dfsg-3ubuntu0.19+esm4

Ubuntu 12.04 ESM:
  bind9                           1:9.8.1.dfsg.P1-4ubuntu0.32

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

References

https://ubuntu.com/security/notices/USN-4737-2

https://ubuntu.com/security/notices/USN-4737-1

CVE-2020-8625

Severity
critical
Lowest
Low
Medium
High
Critical

March 01, 2021

Topics%20covered

Topics Covered

security advisory denial of service denial service critical bind network traffic ubuntu network attack

Package Information

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