USN-5474-2

It was discovered that Varnish Cache could have an assertion failure when a TLS termination proxy uses PROXY version 2. A remote attacker could possibly use this issue to restart the daemon and cause a performance loss. (CVE-2020-11653)

References

Affected packages

Ubuntu:20.04:LTS / varnish

Package

Name: varnish
Purl: pkg:deb/ubuntu/varnish@6.2.1-2ubuntu0.2?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

6.2.1-2ubuntu0.2

Affected versions

6.*

6.1.1-1

6.2.1-2

6.2.1-2ubuntu0.1

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "6.2.1-2ubuntu0.2",
            "binary_name": "libvarnishapi-dev"
        },
        {
            "binary_version": "6.2.1-2ubuntu0.2",
            "binary_name": "libvarnishapi2"
        },
        {
            "binary_version": "6.2.1-2ubuntu0.2",
            "binary_name": "varnish"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2020-11653",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        }
    ]
}