UBUNTU-CVE-2021-36740

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Source
https://ubuntu.com/security/CVE-2021-36740
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36740.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-36740
Upstream
Downstream
Related
Published
2021-07-14T17:15:00Z
Modified
2026-02-04T17:32:17.108510Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.

References

Affected packages

Ubuntu:20.04:LTS / varnish

Package

Name
varnish
Purl
pkg:deb/ubuntu/varnish@6.2.1-2ubuntu0.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.2.1-2ubuntu0.1

Affected versions

6.*
6.1.1-1
6.2.1-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "6.2.1-2ubuntu0.1",
            "binary_name": "libvarnishapi-dev"
        },
        {
            "binary_version": "6.2.1-2ubuntu0.1",
            "binary_name": "libvarnishapi2"
        },
        {
            "binary_version": "6.2.1-2ubuntu0.1",
            "binary_name": "varnish"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-36740.json"