APP: Apache Log4j CVE-2021-44228 TCP Variant JNDI Injection
This signature detects attempts to exploit a known vulnerability against Apache Log4j. A successful attack can lead to arbitrary code execution.
Extended Description
Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0 (along with 2.12.2, 2.12.3, and 2.3.1), this functionality has been completely removed. Note that this vulnerability is specific to log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.
Affected Products
Bentley synchro_4d
References
CVE: CVE-2021-44228
Short Name
APP:MISC:APACHE-LOG4J-TCPVR-RCE
Severity
Critical
Recommended
True
Recommended Action
Drop
Category
APP
Keywords
Apache CVE-2021-44228 Injection JNDI Log4j TCP Variant
Release Date
12/13/2021
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3797
Port
TCP/0-79,81-442,444-3127,3129-7999,8001-8079,8081-65535
False Positive
Unknown
Vendors
Cisco
Intel
Bentley
Percussion
Fedoraproject
Siemens
Sonicwall
Apache
Snowsoftware
Netapp
Debian
Apple
CVSS Score
9.3