SB2022031912 - Inconsistent interpretation of HTTP requests in mitmproxy

Description

This security bulletin contains information about 1 vulnerability.

1) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2022-24766)

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to bypass security checks.

The vulnerability exists due to insufficient protection against HTTP request smuggling in the HTTP/1 message handling logic when processing crafted HTTP requests and responses through the proxy. A remote attacker can smuggle a request or response through the proxy to bypass security checks.

This issue affects deployments where the proxy is used to protect an HTTP/1 service.

Remediation

Install update from vendor's website.

References

• https://github.com/mitmproxy/mitmproxy/security/advisories/GHSA-gcx2-gvj7-pxv3
• https://github.com/advisories/GHSA-gcx2-gvj7-pxv3