[USN-7370-1] SmartDNS vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7370-1
March 25, 2025

smartdns vulnerabilities
==========================================================================

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

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in SmartDNS.

Software Description:
- smartdns: local DNS server to obtain the fastest IP for the best experience

Details:

It was discovered that SmartDNS did not correctly align certain objects in
memory, leading to undefined behaviour. An attacker could possibly use this
issue to cause a denial of service or execute arbitrary code. This issue
only affected Ubuntu 22.04 LTS. (CVE-2024-24198, CVE-2024-24199)

It was discovered that SmartDNS did not correctly handle certain inputs,
which could lead to an integer overflow. A remote attacker could possibly
use this issue to cause a denial of service. This issue only affected
Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2024-42643)

Update instructions:

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

Ubuntu 24.10
  smartdns                        46+dfsg-1ubuntu0.1

Ubuntu 24.04 LTS
  smartdns                        45+dfsg-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  smartdns                        35+dfsg-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7370-1
  CVE-2024-24198, CVE-2024-24199, CVE-2024-42643

Package Information:
  https://launchpad.net/ubuntu/+source/smartdns/46+dfsg-1ubuntu0.1