Ubuntu 5408-1: Dnsmasq vulnerability | LinuxSecurity.com
==========================================================================
Ubuntu Security Notice USN-5408-1
May 10, 2022

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

- Ubuntu 22.04 LTS
- Ubuntu 21.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

Dnsmasq could be made to execute arbitrary code or expose
sensitive information if it received a specially crafted input.

Software Description:
- dnsmasq: Small caching DNS proxy and DHCP/TFTP server

Details:

Petr Menšík and Richard Johnson discovered that Dnsmasq incorrectly handled
certain inputs. An attacker could possibly use this issue to execute
arbitrary code or expose sensitive information.

Update instructions:

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

Ubuntu 22.04 LTS:
  dnsmasq                         2.86-1.1ubuntu0.1
  dnsmasq-base                    2.86-1.1ubuntu0.1
  dnsmasq-utils                   2.86-1.1ubuntu0.1

Ubuntu 21.10:
  dnsmasq                         2.85-1ubuntu2.1
  dnsmasq-base                    2.85-1ubuntu2.1
  dnsmasq-utils                   2.85-1ubuntu2.1

Ubuntu 20.04 LTS:
  dnsmasq                         2.80-1.1ubuntu1.5
  dnsmasq-base                    2.80-1.1ubuntu1.5
  dnsmasq-utils                   2.80-1.1ubuntu1.5

Ubuntu 18.04 LTS:
  dnsmasq                         2.79-1ubuntu0.6
  dnsmasq-base                    2.79-1ubuntu0.6
  dnsmasq-utils                   2.79-1ubuntu0.6

Ubuntu 16.04 ESM:
  dnsmasq                         2.75-1ubuntu0.16.04.10+esm1
  dnsmasq-base                    2.75-1ubuntu0.16.04.10+esm1
  dnsmasq-utils                   2.75-1ubuntu0.16.04.10+esm1

Ubuntu 14.04 ESM:
  dnsmasq                         2.68-1ubuntu0.2+esm1
  dnsmasq-base                    2.68-1ubuntu0.2+esm1
  dnsmasq-utils                   2.68-1ubuntu0.2+esm1

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

References:
  https://ubuntu.com/security/notices/USN-5408-1
  CVE-2022-0934

Package Information:
  https://launchpad.net/ubuntu/+source/dnsmasq/2.86-1.1ubuntu0.1
  https://launchpad.net/ubuntu/+source/dnsmasq/2.85-1ubuntu2.1
  https://launchpad.net/ubuntu/+source/dnsmasq/2.80-1.1ubuntu1.5
  https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1ubuntu0.6

Ubuntu 5408-1: Dnsmasq vulnerability

May 10, 2022

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 21.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Dnsmasq could be made to execute arbitrary code or expose sensitive information if it received a specially crafted input. Software Description: - dnsmasq: Small caching DNS proxy and DHCP/TFTP server Details: Petr Menšík and Richard Johnson discovered that Dnsmasq incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code or expose sensitive information.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: dnsmasq 2.86-1.1ubuntu0.1 dnsmasq-base 2.86-1.1ubuntu0.1 dnsmasq-utils 2.86-1.1ubuntu0.1 Ubuntu 21.10: dnsmasq 2.85-1ubuntu2.1 dnsmasq-base 2.85-1ubuntu2.1 dnsmasq-utils 2.85-1ubuntu2.1 Ubuntu 20.04 LTS: dnsmasq 2.80-1.1ubuntu1.5 dnsmasq-base 2.80-1.1ubuntu1.5 dnsmasq-utils 2.80-1.1ubuntu1.5 Ubuntu 18.04 LTS: dnsmasq 2.79-1ubuntu0.6 dnsmasq-base 2.79-1ubuntu0.6 dnsmasq-utils 2.79-1ubuntu0.6 Ubuntu 16.04 ESM: dnsmasq 2.75-1ubuntu0.16.04.10+esm1 dnsmasq-base 2.75-1ubuntu0.16.04.10+esm1 dnsmasq-utils 2.75-1ubuntu0.16.04.10+esm1 Ubuntu 14.04 ESM: dnsmasq 2.68-1ubuntu0.2+esm1 dnsmasq-base 2.68-1ubuntu0.2+esm1 dnsmasq-utils 2.68-1ubuntu0.2+esm1 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5408-1

CVE-2022-0934

Severity
Ubuntu Security Notice USN-5408-1

Package Information

https://launchpad.net/ubuntu/+source/dnsmasq/2.86-1.1ubuntu0.1 https://launchpad.net/ubuntu/+source/dnsmasq/2.85-1ubuntu2.1 https://launchpad.net/ubuntu/+source/dnsmasq/2.80-1.1ubuntu1.5 https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1ubuntu0.6

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