GHSA-7h74-7vcw-4mwp Insecure deserialize Vulnerability in FLOW3
An attacker can trigger arbitrary object deserialization in FLOW3 due to missing HMAC signatures, potentially leading to code execution if exploitable objects exist.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-7h74-7vcw-4mwp?
GHSA-7h74-7vcw-4mwp is an unsafe deserialization vulnerability in neos/flow, published on 17 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Due to a missing signature (HMAC) for a request argument, an attacker could unserialize arbitrary objects within FLOW3.
To our knowledge it is neither possible to inject code through this vulnerability, nor are there exploitable objects within the FLOW3 Base Distribution. However, there might be exploitable objects within user applications.
Which versions are affected by GHSA-7h74-7vcw-4mwp?
2 open source packages ship an affected version, including neos/flow.
| Package | Affected | Fixed in |
|---|---|---|
neos/flow Packagist | From 1.0.0 | 1.0.4 |
neos/flow Packagist | From 1.0.0 | 1.0.4 |
How do I fix GHSA-7h74-7vcw-4mwp?
Upgrade neos/flow to 1.0.4 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is GHSA-7h74-7vcw-4mwp being exploited?
There is no known exploitation of GHSA-7h74-7vcw-4mwp in the wild and no public exploit code.