CVE-2021-33728 Deserialization in SINEC NMS
A privileged attacker can execute arbitrary code with root privileges on Siemens SINEC NMS via insecure deserialization of crafted Java objects.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-33728?
CVE-2021-33728 is a high-severity unsafe deserialization vulnerability in Siemens SINEC NMS, published on 12 Oct 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). The affected system allows to upload JSON objects that are deserialized to JAVA objects. Due to insecure deserialization of user-supplied content by the affected software, a privileged attacker could exploit this vulnerability by sending a crafted serialized Java object. An exploit could allow the attacker to execute arbitrary code on the device with root privileges.
Weakness: CWE-502
Which versions are affected by CVE-2021-33728?
It affects 1 product.
Products include Siemens Sinec Nms.
How do I fix CVE-2021-33728?
No fix has been published for CVE-2021-33728 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-2021-33728 being exploited?
There is no known exploitation of CVE-2021-33728 in the wild and no public exploit code.
Other vulnerabilities in Siemens SINEC NMS
Sources
Also known as GHSA-6ccq-w7mc-g74j.