CVE-2021-42237

CVE Published	2021-11-05
Related CWE(s)	CWE-502: Deserialization of Untrusted Data
Related Vendor(s)	sitecore
Related Product(s)	experience_platform
Exploitation Reported (CISA KEV)	2022-03-25
CVSS 3 Base Score	9.8 (CRITICAL)
CVSS 3 Attack Complexity	LOW
CVSS 3 Attack Vector	NETWORK

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.

Cyber Threat Graph Context

Explore how this CVE relates to the wider threat graph

Associated CAPEC Patterns

Object Injection (CAPEC-586)

An adversary attempts to exploit an application by injecting additional, malicious content during its processing of serialized objects. Developers leverage serialization in order to convert data or state into a static, binary format for saving to disk or transferring over a network. These objects are then deserialized when needed to recover the data/state. By injecting a malformed object into a vulnerable application, an adversary can potentially compromise the application by manipulating the deserialization process. This can result in a number of unwanted outcomes, including remote code execution.

References

CVE-2021-42237

Cyber Threat Graph Context

Associated CAPEC Patterns

Object Injection (CAPEC-586)

References

CVE.org

NIST National Vulnerability Database

CISA Known Exploited Vulnerabilities