CVE-2016-2510: Improper Input Validation in BeanShell
Summary
CVE-2016-2510: Improper Input Validation in BeanShell. Affects org.apache-extras.beanshell:bsh versions < 2.0b6. Fixed in 2.0b6. How to fix ↓
Also tracked for
- bsh · Debian:11
The same CVE-2016-2510 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
BeanShell (bsh) is a scripting language for Java that provides a convenient way to execute Java code dynamically. It is often used as an embedded scripting language in Java applications. The vulnerability in question (CVE-2016-2510) affects versions of BeanShell prior to 2.0b6. This vulnerability arises when BeanShell is included on the classpath by an application that uses Java serialization or XStream. Attackers can exploit this vulnerability by sending crafted serialized data, leading to the execution of arbitrary code. The vulnerability is related to XThis.Handler.
Vulnerability Detail
The vulnerability allows remote attackers to execute arbitrary code by exploiting improper input validation in BeanShell. By sending specially crafted serialized data, an attacker can trigger the execution of arbitrary code on the target system. This can lead to various consequences, including unauthorized access, data theft, or system compromise. The vulnerability has a CVSS score of 8.1, indicating a high severity level.
How To Fix
Minimum fixed version
2.0b6
This is the first release that contains the fix.
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Workaround
If upgrading to the latest version of BeanShell is not immediately feasible, a possible workaround is to remove BeanShell from the classpath if it is not required by the application. This can help mitigate the risk of exploitation. However, it is strongly recommended to update to the latest version as soon as possible to fully address the vulnerability.
Conclusion
In conclusion, the vulnerability (CVE-2016-2510) in BeanShell allows remote attackers to execute arbitrary code by exploiting improper input validation. To mitigate this vulnerability, it is crucial to upgrade to BeanShell version 2.0b6 or later. If immediate upgrading is not possible, removing BeanShell from the classpath can serve as a temporary workaround. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
BeanShell is a scripting language for Java that allows the execution of Java code dynamically. It is often used as an embedded scripting language in Java applications.
The vulnerability allows remote attackers to execute arbitrary code on the target system. This can lead to unauthorized access, data theft, or system compromise.
To fix this vulnerability, it is recommended to upgrade to BeanShell version 2.0b6 or later. Updating the BeanShell dependency in the application's Maven configuration or build file will ensure that the vulnerability is mitigated.
If upgrading to the latest version of BeanShell is not immediately feasible, a possible workaround is to remove BeanShell from the classpath if it is not required by the application. However, it is strongly recommended to update to the latest version as soon as possible.
The CVSS score of this vulnerability is 8.1, indicating a high severity level.
