CVE-2020-27868 Deserialization in Ocularis
Remote attackers can execute arbitrary code with SYSTEM privileges via unsafe deserialization in the EventCoordinator endpoint without authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-27868?
CVE-2020-27868 is a critical unsafe deserialization vulnerability in Qognify Ocularis, published on 11 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Qognify Ocularis 5.9.0.395. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of serialized objects provided to the EventCoordinator endpoint. 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 SYSTEM. Was ZDI-CAN-11257.
Weakness: CWE-502
Which versions are affected by CVE-2020-27868?
It affects 1 product.
Products include Qognify Ocularis.
How do I fix CVE-2020-27868?
No fix has been published for CVE-2020-27868 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-2020-27868 being exploited?
There is no known exploitation of CVE-2020-27868 in the wild and no public exploit code.
Sources
Also known as GHSA-3gqm-8w6h-2v84.