Vulnerabilities > CVE-2021-45046 - Expression Language Injection vulnerability in multiple products

047910
CVSS 9.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH

Summary

It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. This could allows attackers with control over Thread Context Map (MDC) input data when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) to craft malicious input data using a JNDI Lookup pattern resulting in an information leak and remote code execution in some environments and local code execution in all environments. Log4j 2.16.0 (Java 8) and 2.12.2 (Java 7) fix this issue by removing support for message lookup patterns and disabling JNDI functionality by default.

Vulnerable Configurations

Part Description Count
Application
Apache
80
Application
Intel
8
Application
Cvat
1
Application
Siemens
65
Application
Sonicwall
2
OS
Siemens
6
OS
Debian
2
OS
Fedoraproject
2
Hardware
Siemens
6