CVE-2021-34992 Deserialization in C1 CMS
Authenticated attackers can execute arbitrary code on Orckestra C1 CMS via unsafe deserialization in Composite.dll.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-34992?
CVE-2021-34992 is a high-severity unsafe deserialization vulnerability in Orckestra C1 CMS, published on 15 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS 6.10. Authentication is required to exploit this vulnerability. The specific flaw exists within Composite.dll. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-14740.
Weakness: CWE-502
Which versions are affected by CVE-2021-34992?
It affects 1 product.
Products include Orckestra C1 Cms.
How do I fix CVE-2021-34992?
No fix has been published for CVE-2021-34992 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2021-34992 being exploited?
There is no known exploitation of CVE-2021-34992 in the wild and no public exploit code.
Other vulnerabilities in Orckestra C1 CMS
Sources
Also known as GHSA-xr89-j843-vpgq.