USN-5474-2

Source
https://ubuntu.com/security/notices/USN-5474-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5474-2.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-5474-2
Upstream
Related
Published
2022-08-23T19:00:19.016123Z
Modified
2025-10-13T04:35:59Z
Summary
varnish regression
Details

USN-5474-1 fixed vulnerabilities in Varnish Cache. Unfortunately the fix for CVE-2020-11653 was incomplete. This update fixes the problem.

Original advisory details:

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

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

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"
                }
            ]
        }
    ]
}