USN-6657-2

Source

https://ubuntu.com/security/notices/USN-6657-2

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/USN-6657-2.json

Related

Published

2024-04-24T19:55:01.148553Z

Modified

2024-04-24T19:55:01.148553Z

Summary

dnsmasq vulnerabilities

Details

USN-6657-1 fixed several vulnerabilities in Dnsmasq. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.

Original advisory details:

Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Dnsmasq icorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service. (CVE-2023-50387)

It was discovered that Dnsmasq incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service. (CVE-2023-50868)

It was discovered that Dnsmasq incorrectly set the maximum EDNS.0 UDP packet size as required by DNS Flag Day 2020. This issue only affected Ubuntu 23.10. (CVE-2023-28450)

References

Affected packages

Ubuntu:Pro:18.04:LTS / dnsmasq

Package

Name: dnsmasq

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0The exact introduced commit is unknown

Fixed

2.90-0ubuntu0.18.04.1+esm1

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "dnsmasq": "2.90-0ubuntu0.18.04.1+esm1",
            "dnsmasq-base-lua": "2.90-0ubuntu0.18.04.1+esm1",
            "dnsmasq-utils": "2.90-0ubuntu0.18.04.1+esm1",
            "dnsmasq-base": "2.90-0ubuntu0.18.04.1+esm1"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / dnsmasq

Package

Name: dnsmasq

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0The exact introduced commit is unknown

Fixed

2.90-0ubuntu0.16.04.1+esm1

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "dnsmasq": "2.90-0ubuntu0.16.04.1+esm1",
            "dnsmasq-base-lua": "2.90-0ubuntu0.16.04.1+esm1",
            "dnsmasq-utils": "2.90-0ubuntu0.16.04.1+esm1",
            "dnsmasq-base": "2.90-0ubuntu0.16.04.1+esm1"
        }
    ]
}