CVE-2021-27240 Deserialization in Patch Manager
Local attackers can escalate privileges to Administrator via unsafe deserialization in the DataGridService WCF service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-27240?
CVE-2021-27240 is a high-severity unsafe deserialization vulnerability in SolarWinds Patch Manager, published on 29 Mar 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
This vulnerability allows local attackers to escalate privileges on affected installations of SolarWinds Patch Manager 2020.2.1. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the DataGridService WCF service. 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 escalate privileges and execute arbitrary code in the context of Administrator. Was ZDI-CAN-12009.
Weakness: CWE-502
Which versions are affected by CVE-2021-27240?
It affects 1 product.
Products include Solarwinds Patch Manager.
How do I fix CVE-2021-27240?
No fix has been published for CVE-2021-27240 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-2021-27240 being exploited?
There is no known exploitation of CVE-2021-27240 in the wild and no public exploit code.
Other vulnerabilities in SolarWinds Patch Manager
Sources
Also known as GHSA-hxhw-4jhr-hg8m.