CVE-2022-29167: ReDoS vulnerability in header parsing in hawk
First published: Thu May 05 2022(Updated: )
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()`.
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Hawk | <9.0.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-29167?
CVE-2022-29167 has been assigned a medium severity rating due to its potential impact on authentication mechanisms.
How do I fix CVE-2022-29167?
To fix CVE-2022-29167, update the Hawk package to version 9.0.1 or later.
Which versions of Hawk are affected by CVE-2022-29167?
CVE-2022-29167 affects Hawk versions prior to 9.0.1.
What type of vulnerability is CVE-2022-29167?
CVE-2022-29167 is an authentication vulnerability related to the HTTP authentication scheme implemented by Hawk.
Can CVE-2022-29167 affect my application?
Yes, if your application uses vulnerable versions of the Hawk library and relies on HTTP authentication, it is at risk.
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