CVE-2021-25274 Deserialization in n/a

What is CVE-2021-25274?

CVE-2021-25274 is a critical unsafe deserialization vulnerability in n/a, published on 3 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Collector Service in SolarWinds Orion Platform before 2020.2.4 uses MSMQ (Microsoft Message Queue) and doesn't set permissions on its private queues. As a result, remote unauthenticated clients can send messages to TCP port 1801 that the Collector Service will process. Additionally, upon processing of such messages, the service deserializes them in insecure manner, allowing remote arbitrary code execution as LocalSystem.

Weakness: CWE-502

Which versions are affected by CVE-2021-25274?

It affects 1 product.

Products include Solarwinds Orion Platform.

How do I fix CVE-2021-25274?

No fix has been published for CVE-2021-25274 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-2021-25274 being exploited?

There is no known exploitation of CVE-2021-25274 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2020-10148 SolarWinds Orion Authentication Bypass Exploited Critical 9.8
• CVE-2021-27258 Privilege escalation in Orion Platform 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
• CVE-2021-35215 ActionPluginBaseView Deserialization of Untrusted Data RCE High 8.9

Sources

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

Also known as GHSA-9r6g-h7wj-fxhp.