GHSA-fq4p-86hh-42v9 Zend-Diactoros URL Rewrite vulnerability
Attackers can spoof URL rewrite headers to access arbitrary internal content via SSRF in Zend Diactoros and related libraries.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-fq4p-86hh-42v9?
GHSA-fq4p-86hh-42v9 is a server-side request forgery vulnerability in zendframework/zend-diactoros, published on 7 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
zend-diactoros (and, by extension, Expressive), zend-http (and, by extension, Zend Framework MVC projects), and zend-feed (specifically, its PubSubHubbub sub-component) each contain a potential URL rewrite exploit. In each case, marshaling a request URI includes logic that introspects HTTP request headers that are specific to a given server-side URL rewrite mechanism.
When these headers are present on systems not running the specific URL rewriting mechanism, the logic would still trigger, allowing a malicious client or proxy to emulate the headers to request arbitrary content.
Which versions are affected by GHSA-fq4p-86hh-42v9?
2 open source packages ship an affected version, including zendframework/zend-diactoros.
| Package | Affected | Fixed in |
|---|---|---|
zendframework/zend-diactoros Packagist | From 1.0.0 | 1.8.4 |
zendframework/zend-diactoros Packagist | From 1.0.0 | 1.8.4 |
How do I fix GHSA-fq4p-86hh-42v9?
Upgrade zendframework/zend-diactoros to 1.8.4 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is GHSA-fq4p-86hh-42v9 being exploited?
There is no known exploitation of GHSA-fq4p-86hh-42v9 in the wild and no public exploit code.