Description

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.

Remediation

References

CVE-2021-33193

Related Vulnerabilities

Moodle Permissions, Privileges, and Access Controls Vulnerability (CVE-2014-0124)

Twisted Web HTTP Server Improper Certificate Validation Vulnerability (CVE-2014-7143)

PHP Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') Vulnerability (CVE-2014-9767)

TYPO3 Other Vulnerability (CVE-2007-1081)

WordPress Plugin Subscribe to Comments Unsubscribe Challenge Information Disclosure (2.0.2)

Severity

High

Classification

CVE-2021-33193 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Tags

Missing Update Known Vulnerabilities