CVE-2021-42237 Sitecore XP Remote Command Execution
Unauthenticated attackers can achieve remote command execution via insecure deserialization in Sitecore XP.
- Exploited in the wild
- Since 25 Mar 2022
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-42237?
CVE-2021-42237 is a critical unsafe deserialization vulnerability in n/a, published on 5 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Sitecore XP 7.5 Initial Release to Sitecore XP 8.2 Update-7 is vulnerable to an insecure deserialization attack where it is possible to achieve remote command execution on the machine. No authentication or special configuration is required to exploit this vulnerability.
Weakness: CWE-502
Which versions are affected by CVE-2021-42237?
It affects 1 product.
Products include Sitecore Experience Platform.
How do I fix CVE-2021-42237?
No fix has been published for CVE-2021-42237 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 15 Apr 2022.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2021-42237 being exploited?
Yes. Attackers have exploited CVE-2021-42237 in the wild since at least 25 Mar 2022, including in ransomware campaigns.
Public exploit code: 1 Metasploit module, 1 Nuclei template and 3 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-j3x5-fr4h-9v7v.