USN-8311-1

Petr Menšík discovered that Dnsmasq incorrectly handled certain input in the dhcp_release utility. A local attacker could possibly use this issue to cause Dnsmasq to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:Pro:14.04:LTS / dnsmasq

Package

Name: dnsmasq
Purl: pkg:deb/ubuntu/dnsmasq?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.68-1ubuntu0.2+esm6

Affected versions

2.*

2.66-4ubuntu1

2.67-1

2.68-1

2.68-1ubuntu0.1

2.68-1ubuntu0.2

2.68-1ubuntu0.2+esm1

2.68-1ubuntu0.2+esm2

2.68-1ubuntu0.2+esm3

2.68-1ubuntu0.2+esm5

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "2.68-1ubuntu0.2+esm6",
            "binary_name": "dnsmasq"
        },
        {
            "binary_version": "2.68-1ubuntu0.2+esm6",
            "binary_name": "dnsmasq-base"
        },
        {
            "binary_version": "2.68-1ubuntu0.2+esm6",
            "binary_name": "dnsmasq-utils"
        }
    ],
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:14.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2020-37127"
        }
    ]
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8311-1.json"