Apache Struts is a popular, open-source framework for developing Java web applications. It is widely used by developers to create secure, high-performing, and scalable web applications. It offers a range of features that help in building complex web applications with ease, including support for REST, AJAX, and rich interfaces. The framework emphasizes modular design, allowing developers to easily extend and customize their applications as per their specific needs. With such a wide range of benefits, the popularity of Apache Struts is unsurprising.
However, Apache Struts is not without its vulnerabilities. One such vulnerability is CVE-2020-17530, which is a remote code execution vulnerability caused by forced OGNL (Object-Graph Navigation Language) evaluation. This vulnerability affects Apache Struts versions from 2.0.0 to 2.5.25, and it can have severe implications if exploited.
Exploitation of this vulnerability can lead to remote code execution, which means that an attacker can remotely execute arbitrary code on the victim's system. If an attacker is successful in exploiting this vulnerability, they can completely compromise the system, creating serious problems for the victim. Attackers can use various techniques, including social engineering, phishing, or malware, to exploit this vulnerability, making it a major concern for developers.
Overall, it is crucial that organizations take steps to protect against vulnerabilities such as CVE-2020-17530 to prevent the disruption of their operations and potential loss of control over their systems. s4e.io provides a convenient platform that offers a range of features to help users identify vulnerabilities in their digital assets quickly and easily. With pro features such as automated scanning, custom reports, and real-time alerts, users can stay ahead of potential threats and keep their systems secure. By taking the proper preventive measures and utilizing tools like s4e.io, organizations can ensure that they maintain the security of their digital assets.
REFERENCES
- https://cwiki.apache.org/confluence/display/WW/S2-061
- jvn.jp: JVN#43969166
- https://www.oracle.com/security-alerts/cpujan2021.html
- http://packetstormsecurity.com/files/160721/Apache-Struts-2-Forced-Multi-OGNL-Evaluation.html
- https://security.netapp.com/advisory/ntap-20210115-0005/
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- openwall.com: [oss-security] 20220412 CVE-2021-31805: Apache Struts: Forced OGNL evaluation, when evaluated on raw not validated user input in tag attributes, may lead to RCE.
- https://www.oracle.com/security-alerts/cpuapr2022.html
There are several precautions that can be taken to protect against this vulnerability. Some of the precautionary measures include:
- Applying patches and updates as soon as they become available.
- Disabling the “debugging” and “devMode” features in production environments.
- Educating developers and users about the risks of using untrusted input.
- Implementing access controls, as well as intrusion detection and prevention systems.
- Conducting regular vulnerability assessments and penetration testing.
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