CVE-2022-39256 Orckestra C1 CMS's deserialization of untrusted data allows for arbitrary code execution.
Authenticated attackers can execute arbitrary code on Orckestra C1 CMS installations by visiting a specially crafted site.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2022-39256?
CVE-2022-39256 is a critical unsafe deserialization vulnerability in Orckestra C1-CMS-Foundation, published on 27 Sep 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Orckestra C1 CMS is a .NET based Web Content Management System. A vulnerability in versions prior to 6.13 allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. Authentication is required to exploit this vulnerability. The authenticated user may perform the actions unknowingly by visiting a specially crafted site. This issue is patched in C1 CMS v6.13. There are no known workarounds.
Weakness: CWE-502
Which versions are affected by CVE-2022-39256?
2 open source packages ship an affected version, including CompositeC1.Core. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
CompositeC1.Core NuGet | All versions | 6.13 |
CompositeC1.Core NuGet | All versions | 6.13 |
Products include Orckestra C1 Cms.
How do I fix CVE-2022-39256?
Upgrade CompositeC1.Core to 6.13 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2022-39256 being exploited?
There is no known exploitation of CVE-2022-39256 in the wild and no public exploit code.
Other vulnerabilities in Orckestra C1-CMS-Foundation
Sources
Also known as GHSA-gfhp-jgp6-838j.