CVE-2021-33193

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Source
https://cve.org/CVERecord?id=CVE-2021-33193
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-33193.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-33193
Aliases
Downstream
Related
Published
2021-08-16T08:15:11.480Z
Modified
2026-05-28T04:06:47.810399158Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48.

Database specific 
{
    "unresolved_ranges": [
        {
            "vendor_product": "oracle:secure_backup",
            "extracted_events": [
                {
                    "fixed": "18.1.0.1.0"
                }
            ],
            "cpes": [
                "cpe:2.3:a:oracle:secure_backup:*:*:*:*:*:*:*:*"
            ],
            "source": "CPE_RANGE"
        },
        {
            "vendor_product": "tenable:tenable.sc",
            "extracted_events": [
                {
                    "last_affected": "5.19.1"
                }
            ],
            "cpes": [
                "cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:*"
            ],
            "source": "CPE_RANGE"
        },
        {
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
                {
                    "last_affected": "10.0"
                }
            ],
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
            ],
            "source": "CPE_STRING"
        },
        {
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
                {
                    "last_affected": "34"
                },
                {
                    "last_affected": "35"
                }
            ],
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
            ],
            "source": "CPE_STRING"
        },
        {
            "vendor_product": "oracle:zfs_storage_appliance_kit",
            "extracted_events": [
                {
                    "last_affected": "8.8"
                }
            ],
            "cpes": [
                "cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*"
            ],
            "source": "CPE_STRING"
        }
    ]
}
References

Affected packages

Git / github.com/apache/httpd

Affected ranges

Type
GIT
Repo
https://github.com/apache/httpd
Events
Introduced
47a9d8e8abf5697b4580c3ee2ade302b5c058fa6
Fixed
bbacd798d1494b5a99f4e3edab068ccc77b03b7e
Fixed
ecebcc035ccd8d0e2984fe41420d9e944f456b3c
Database specific 
{
    "extracted_events": [
        {
            "introduced": "2.4.17"
        },
        {
            "fixed": "2.4.49"
        }
    ],
    "cpe": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-33193.json"