CVE-2022-39297 Deserialization of untrusted data in MelisCms
Unauthenticated attackers can execute arbitrary PHP code via unsafe deserialization in MelisCms, requiring an immediate upgrade.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-39297?
CVE-2022-39297 is a high-severity unsafe deserialization vulnerability in melisplatform melis-cms, published on 12 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
MelisCms provides a full CMS for Melis Platform, including templating system, drag'n'drop of plugins, SEO and many administration tools. Attackers can deserialize arbitrary data on affected versions of `melisplatform/melis-cms`, and ultimately leads to the execution of arbitrary PHP code on the system. Conducting this attack does not require authentication. Users should immediately upgrade to `melisplatform/melis-cms` >= 5.0.1. This issue was addressed by restricting allowed classes when deserializing user-controlled data.
Weakness: CWE-502
Which versions are affected by CVE-2022-39297?
2 open source packages ship an affected version, including melisplatform/melis-cms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
melisplatform/melis-cms Packagist | All versions | 5.0.1 |
melisplatform/melis-cms Packagist | All versions | 5.0.1 |
Products include Melistechnology Meliscms.
How do I fix CVE-2022-39297?
Upgrade melisplatform/melis-cms to 5.0.1 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2022-39297 being exploited?
There is no known exploitation of CVE-2022-39297 in the wild and no public exploit code.
Other vulnerabilities in melisplatform melis-cms
Sources
Also known as GHSA-m3m3-6gww-7gj9.