CVE-2022-36032 ReactPHP's HTTP server parses encoded cookie names so malicious `__Host-` and `__Secure-` cookies can be sent
Attackers can bypass cookie security prefixes by exploiting URL decoding flaws in ReactPHP's HTTP server, allowing them to forge secure cookies.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-36032?
CVE-2022-36032 is a medium-severity vulnerability in reactphp http, published on 6 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ReactPHP HTTP is a streaming HTTP client and server implementation for ReactPHP. In ReactPHP's HTTP server component versions starting with 0.7.0 and prior to 1.7.0, when ReactPHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like `__Host-` and `__Secure-` confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. This issue is fixed in ReactPHP HTTP version 1.7.0. As a workaround, Infrastructure or DevOps can place a reverse proxy in front of the ReactPHP HTTP server to filter out any unexpected `Cookie` request headers.
Which versions are affected by CVE-2022-36032?
2 open source packages ship an affected version, including react/http. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
react/http Packagist | From 0.7.0 | 1.7.0 |
react/http Packagist | From 0.7.0 | 1.7.0 |
Products include Reactphp Http.
How do I fix CVE-2022-36032?
Upgrade react/http to 1.7.0 or later.
Is CVE-2022-36032 being exploited?
There is no known exploitation of CVE-2022-36032 in the wild and no public exploit code.
Other vulnerabilities in reactphp http
Sources
Also known as GHSA-w3w9-vrf5-8mx8, UBUNTU-CVE-2022-36032.