CVE-2021-43797

ADVISORY - github

Summary

Impact

Netty currently just skips control chars when these are present at the beginning / end of the header name. We should better fail fast as these are not allowed by the spec and could lead to HTTP request smuggling.

Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore and so not do the validation itself.

EPSS Score⁠: 0.00419 (0.613)

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-444⁠

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

ADVISORY - github

CWE-444⁠

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

ADVISORY - gitlab

CWE-1035⁠

OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities

CWE-444⁠

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CWE-937⁠

OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities

ADVISORY - redhat

CWE-444⁠

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Impacted images

Advisories

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