CVE-2022-29167

Published: 5 May 2022

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()`.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
node-hawk Launchpad, Ubuntu, Debian	bionic	Released (6.0.1+dfsg-1+deb10u1build0.18.04.1)
	focal	Released (7.1.2+dfsg-1ubuntu0.1)
	jammy	Released (8.0.1+dfsg-1ubuntu0.22.04.1)
	kinetic	Released (8.0.1+dfsg-1ubuntu0.22.10.1)
	lunar	Not vulnerable (9.0.1-1)
	trusty	Ignored (end of standard support)
	upstream	Released (9.0.1-1)
	xenial	Ignored (end of standard support)

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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