CVE-2021-35215 ActionPluginBaseView Deserialization of Untrusted Data RCE

What is CVE-2021-35215?

CVE-2021-35215 is a high-severity unsafe deserialization vulnerability in SolarWinds Orion Platform, published on 1 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Insecure deserialization leading to Remote Code Execution was detected in the Orion Platform version 2020.2.5. Authentication is required to exploit this vulnerability.

Weakness: CWE-502

Which versions are affected by CVE-2021-35215?

It affects 1 product.

Products include Solarwinds Orion Platform.

How do I fix CVE-2021-35215?

No fix has been published for CVE-2021-35215 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-2021-35215 being exploited?

There is no known exploitation of CVE-2021-35215 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in SolarWinds Orion Platform

• CVE-2020-10148 SolarWinds Orion Authentication Bypass Exploited Critical 9.8
• CVE-2021-27258 Privilege escalation in Orion Platform Critical 9.8
• CVE-2021-25274 Deserialization in n/a Critical 9.8
• CVE-2019-9546 Privilege escalation in n/a Critical 9.8
• CVE-2020-13169 Cross-site scripting in n/a Critical 9.0

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-qgvw-v9xq-rjp9.