USN-6376-1

It was discovered that c-ares incorrectly parsed certain SOA replies. A remote attacker could possibly use this issue to cause c-res to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:20.04:LTS / c-ares

Package

Name: c-ares
Purl: pkg:deb/ubuntu/c-ares@1.15.0-1ubuntu0.4?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.15.0-1ubuntu0.4

Affected versions

1.*

1.15.0-1build1

1.15.0-1ubuntu0.1

1.15.0-1ubuntu0.2

1.15.0-1ubuntu0.3

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1.15.0-1ubuntu0.4",
            "binary_name": "libc-ares-dev"
        },
        {
            "binary_version": "1.15.0-1ubuntu0.4",
            "binary_name": "libc-ares2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2020-22217"
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}