VulnerabilityAnalyzed
CVE-2021-42237
Sitecore XP Remote Command Execution Vulnerability
KEVCRITICAL 9.8EPSS 97.9%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 97.90% probability · 100th percentile
- CISA KEV
- Listed 25 March 2022 · due 15 April 2022 · used in ransomware campaigns
- Weakness
- CWE-502
- Affected
- sitecore/experience platform
- Source
- cve@mitre.org
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-42237
References
- http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- https://blog.assetnote.io/2021/11/02/sitecore-rce/Exploit, Third Party Advisory
- https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776Vendor Advisory
- http://packetstormsecurity.com/files/164988/Sitecore-Experience-Platform-XP-Remote-Code-Execution.htmlThird Party Advisory, VDB Entry
- https://blog.assetnote.io/2021/11/02/sitecore-rce/Exploit, Third Party Advisory
- https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1000776Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42237US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.