CVE-2019-18211 Deserialization in n/a

High 8.8 Published Updated

Unvalidated deserialization in C1 CMS allows low-privilege users to execute arbitrary code remotely.

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-2019-18211?

CVE-2019-18211 is a high-severity unsafe deserialization vulnerability in n/a, published on 23 Dec 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in Orckestra C1 CMS through 6.6. The EntityTokenSerializer class in Composite.dll is prone to unvalidated deserialization of wrapped BinaryFormatter payloads, leading to arbitrary remote code execution for any low-privilege user.

Weakness: CWE-502

Which versions are affected by CVE-2019-18211?

It affects 1 product.

Products include Orckestra C1 Cms.

How do I fix CVE-2019-18211?

No fix has been published for CVE-2019-18211 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-2019-18211 being exploited?

There is no known exploitation of CVE-2019-18211 in the wild and no public exploit code.

Sources

Also known as GHSA-76qf-3cvm-8qwq.

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