Which Log4j jars are vulnerable
What happened to log4j recently
| Name | Vulnerability type | Affected log4j versions |
|---|---|---|
| CVE-2021-45046 | Denial of Service (DoS) and RCE | 2.0 through 2.15.0 |
| CVE-2021-4104 | RCE | 1.2* |
| CVE-2021-45105 | Denial of Service (DoS) | 2.0-beta9 to 2.16.0 |
| CVE-2021-44832 | RCE | 2.0 to 2.17.0 |
Is Log4j API jar vulnerable
Note that only the log4j-core JAR file is impacted by this vulnerability. Applications using only the log4j-api JAR file without the log4j-core JAR file are not impacted by this vulnerability. Also note that Apache Log4j is the only Logging Services subproject affected by this vulnerability.
Is Log4j 1.2 17 jar affected
Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2. 17.
Is Log4j 2.16 0 vulnerable
Vulnerability Details
DESCRIPTION: Apache Log4j is vulnerable to a denial of service, caused by the failure to protect from uncontrolled recursion from self-referential lookups.
Is log4j Core 2.3 jar vulnerable
log4j:log4j-core is a logging library for Java. Affected versions of this package are vulnerable to Remote Code Execution (RCE). Apache Log4j2 JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints.
Is log4j 2.17 1 safe
1 can probably wait. A number of security professionals say that the latest vulnerability in Apache Log4j, disclosed on Tuesday, does not pose an increased security risk for the majority of organizations. As a result, for many organizations that have already patched to version 2.17.
Is Log4j Core 2.7 jar vulnerable
log4j:log4j-core is a logging library for Java. Affected versions of this package are vulnerable to Remote Code Execution (RCE). Apache Log4j2 JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints.
How do I know if I am vulnerable to Log4j
We also use a log inspection rule to detect the vulnerability. The log inspection rule 1011241 – Apache Log4j Remote Code Execution Vulnerability (CVE-2021-44228) looks for JNDI payloads in the access logs, with the default path being /var/log/*/access. log.
Is log4j Core 2.7 jar vulnerable
log4j:log4j-core is a logging library for Java. Affected versions of this package are vulnerable to Remote Code Execution (RCE). Apache Log4j2 JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints.
What replaces log4j 1.2 17 jar
By drop-in, we mean that you can replace log4j. jar with reload4j. jar in your build with no source code changes, no recompilation, nor rebuild being necessary. The reload4j project offers a clear and easy migration path for the thousands of users who have an urgent need to fix vulnerabilities in log4j 1.2.
Is Log4j 2.17 1 safe
1 can probably wait. A number of security professionals say that the latest vulnerability in Apache Log4j, disclosed on Tuesday, does not pose an increased security risk for the majority of organizations. As a result, for many organizations that have already patched to version 2.17.
Which Log4j version is stable
2.20.0
Log4j
| Developer(s) | Apache Software Foundation |
|---|---|
| Initial release | January 8, 2001 |
| Stable release | 2.20.0 / 21 February 2023 |
| Repository | github.com/apache/logging-log4j2 |
| Written in | Java |
What is Log4j Core 2.3 jar
Apache Log4j Core » 2.3
Implementation for Apache Log4J, a highly configurable logging tool that focuses on performance and low garbage generation. It has a plugin architecture that makes it extensible and supports asynchronous logging based on LMAX Disruptor.
Is 1.18 1 safe from Log4j
Is My Server Safe All servers running 1.18. 1 and above are completely safe.
Is Log4j 1.2 6 vulnerable
Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2. 17.
What is log4j Core 2.7 jar
Apache Log4j Core » 2.7
Implementation for Apache Log4J, a highly configurable logging tool that focuses on performance and low garbage generation. It has a plugin architecture that makes it extensible and supports asynchronous logging based on LMAX Disruptor.
How do I know which version of Log4j is being used
Check the log4j library version in your project's dependencies: If you are using a build tool such as Maven or Gradle, you can check the version of the log4j library in your project's dependencies. The version should be specified in the build file (pom. xml for Maven and build. gradle for Gradle) for the project.
Is Log4j still vulnerable
With 40% of Log4j Downloads Still Vulnerable, Security Retrofitting Needs to Be a Full-Time Job. Vulnerabilities like Log4j remain responsible for security breaches a full year after the discovery of the flaw.
Is log4j 1.2 8 jar vulnerable
Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2. 17.
What is log4j Core 2.3 jar
Apache Log4j Core » 2.3
Implementation for Apache Log4J, a highly configurable logging tool that focuses on performance and low garbage generation. It has a plugin architecture that makes it extensible and supports asynchronous logging based on LMAX Disruptor.
Is Log4j Core 2.13 3 jar vulnerable
log4j:log4j-core is a logging library for Java. Affected versions of this package are vulnerable to Denial of Service (DoS). Does not protect against uncontrolled recursion from self-referential lookups.
What is the last version of Log4j core
Log4j 2.20.0
Log4j 2.20. 0 is the latest release of Log4j. As of Log4j 2.13. 0 Log4j 2 requires Java 8 or greater at runtime.
Which log4j version is stable
2.20.0
Log4j
| Developer(s) | Apache Software Foundation |
|---|---|
| Initial release | January 8, 2001 |
| Stable release | 2.20.0 / 21 February 2023 |
| Repository | github.com/apache/logging-log4j2 |
| Written in | Java |
What versions of Log4j 1 are vulnerable
Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2. 17.
Is Log4j 1.2 end of life
Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the previous versions. CSM version 6.3.
