Ubuntu 5332-2: Bind vulnerability | LinuxSecurity.com
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Ubuntu Security Notice USN-5332-2
March 17, 2022

bind9 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

Bind could be made to manipulate cache results.

Software Description:
- bind9: Internet Domain Name Server

Details:

USN-5332-1 fixed a vulnerability in Bind. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

 Xiang Li, Baojun Liu, Chaoyi Lu, and Changgen Zou discovered that Bind
 incorrectly handled certain bogus NS records when using forwarders. A
 remote attacker could possibly use this issue to manipulate cache results.
 (CVE-2021-25220)

Update instructions:

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

Ubuntu 16.04 ESM:
  bind9                           1:9.10.3.dfsg.P4-8ubuntu1.19+esm2

Ubuntu 14.04 ESM:
  bind9                           1:9.9.5.dfsg-3ubuntu0.19+esm6

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

References:
  https://ubuntu.com/security/notices/USN-5332-2
  https://ubuntu.com/security/notices/USN-5332-1
  CVE-2021-25220

Ubuntu 5332-2: Bind vulnerability

March 17, 2022

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Bind could be made to manipulate cache results. Software Description: - bind9: Internet Domain Name Server Details: USN-5332-1 fixed a vulnerability in Bind. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: Xiang Li, Baojun Liu, Chaoyi Lu, and Changgen Zou discovered that Bind incorrectly handled certain bogus NS records when using forwarders. A remote attacker could possibly use this issue to manipulate cache results. (CVE-2021-25220)

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: bind9 1:9.10.3.dfsg.P4-8ubuntu1.19+esm2 Ubuntu 14.04 ESM: bind9 1:9.9.5.dfsg-3ubuntu0.19+esm6 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5332-2

https://ubuntu.com/security/notices/USN-5332-1

CVE-2021-25220

Severity
Ubuntu Security Notice USN-5332-2

Package Information

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