CVE-2021-36740

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Source
https://cve.org/CVERecord?id=CVE-2021-36740
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-36740.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-36740
Aliases
Downstream
Related
Published
2021-07-14T17:15:08.253Z
Modified
2026-05-16T04:03:06.197231062Z
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
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.

Database specific 
{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "last_affected": "10.0"
                },
                {
                    "last_affected": "11.0"
                }
            ],
            "source": "CPE_FIELD",
            "vendor_product": "debian:debian_linux"
        },
        {
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "last_affected": "33"
                },
                {
                    "last_affected": "34"
                }
            ],
            "source": "CPE_FIELD",
            "vendor_product": "fedoraproject:fedora"
        },
        {
            "cpes": [
                "cpe:2.3:a:varnish-cache:varnish_cache:*:*:*:*:plus:*:*:*",
                "cpe:2.3:a:varnish-cache:varnish_cache:6.0.8:r1:*:*:plus:*:*:*",
                "cpe:2.3:a:varnish-cache:varnish_cache:6.0.8:r2:*:*:plus:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.0.8"
                },
                {
                    "last_affected": "6.0.8-r1"
                },
                {
                    "last_affected": "6.0.8-r2"
                }
            ],
            "source": "CPE_FIELD",
            "vendor_product": "varnish-cache:varnish_cache"
        },
        {
            "cpes": [
                "cpe:2.3:a:varnish-software:varnish_cache:*:*:*:*:*:*:*:*",
                "cpe:2.3:a:varnish-software:varnish_cache:*:*:*:*:lts:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "6.0.0"
                },
                {
                    "last_affected": "6.0.5"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "last_affected": "6.0.7"
                }
            ],
            "source": "CPE_FIELD",
            "vendor_product": "varnish-software:varnish_cache"
        }
    ]
}
References

Affected packages