vulnerability

Red Hat: CVE-2022-29167: hawk: REDoS in hawk.utils.parseHost() when parsing Host header

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
May 5, 2022
Added
Jul 9, 2025
Modified
Jul 9, 2025

Description

Hawk is an HTTP authentication scheme providing mechanisms for making authenticated HTTP requests with partial cryptographic verification of the request and response, covering the HTTP method, request URI, host, and optionally the request payload. Hawk used a regular expression to parse `Host` HTTP header (`Hawk.utils.parseHost()`), which was subject to regular expression DoS attack - meaning each added character in the attacker's input increases the computation time exponentially. `parseHost()` was patched in `9.0.1` to use built-in `URL` class to parse hostname instead. `Hawk.authenticate()` accepts `options` argument. If that contains `host` and `port`, those would be used instead of a call to `utils.parseHost()`.

Solution

no-fix-redhat-rpm-package
Title
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.