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Ubuntu 18.04 LTS USN-6183-2 Critical: Bind Denial Of Service

ubuntu
Calendar Grey July 18, 2023
Dist Ubuntu Esm H88
The Ubuntu Security Notice USN-6190-1 highlights a vulnerability in the apache2 package that could lead to potential data leakage due to a misconfiguration when handling complex requests.
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:

USN-6183-1 fixed vulnerabilities in Bind. This update provides the

corresponding updates for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04

LTS.

Original advisory details:

 Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered

 that Bind incorrectly handled the cache size limit. A remote attacker could

 possibly use this issue to consume memory, leading to a denial of service.

 (CVE-2023-2828)

 It was discovered that Bind incorrectly handled the recursive-clients

 quota. 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, Ubuntu 22.10, and Ubuntu 23.04. (CVE-2023-2911)

Topics%20covered

Topics Covered

security advisory denial of service bind Ubuntu network traffic

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+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   bind9 1:9.10.3.dfsg.P4-8ubuntu1.19+esm6

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   bind9                           1:9.9.5.dfsg-3ubuntu0.19+esm10

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

References

  https://ubuntu.com/security/notices/USN-6183-2

  https://ubuntu.com/security/notices/USN-6183-1

  CVE-2023-2828

Severity
critical
Lowest
Low
Medium
High
Critical

July 18, 2023

Topics%20covered

Topics Covered

security advisory denial of service bind Ubuntu network traffic

Package Information

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