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Apache HTTP Server <= 2.4.48 'mod_proxy' HTTP/2 Request Smuggling Vulnerability - Linux
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Apache HTTP Server is prone to an HTTP/2 request smuggling vulnerability in the 'mod_proxy' module.
Insight
Insight
Apache's mod_proxy allows spaces in the :method of HTTP/2 requests, enabling request line injection. If the back-end server tolerates trailing junk in the request line, this lets an attacker to bypass block rules.
Affected Software
Affected Software
Apache HTTP Server version through 2.4.48 running the mod_proxy module together with an enabled HTTP/2 protocol.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
No known solution is available as of 09th August, 2021. Information regarding this issue will be updated once solution details are available. As a workaround disable the HTTP/2 protocol.