Unsafe Object Deserialization Vulnerability in jruby
Summary
DLA-1352-1: jruby - security update. Affects jruby versions < 1.5.6-5+deb7u2. Fixed in 1.5.6-5+deb7u2. How to fix ↓
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Background
jruby is a 100% pure-Java implementation of Ruby. It provides a platform for running Ruby applications on the Java Virtual Machine (JVM). This vulnerability affects jruby versions prior to 1.5.6-5+deb7u2 on Debian 7 Wheezy. The vulnerability arises from an unsafe object deserialization flaw, which allows an attacker to execute arbitrary code by exploiting a specially crafted YAML file when the gem owner is run.
Vulnerability Detail
The unsafe object deserialization vulnerability in jruby allows an attacker to execute arbitrary code by exploiting a flaw in the handling of YAML files. By crafting a malicious YAML file, an attacker can trigger the deserialization of objects in a way that leads to the execution of arbitrary code. This can result in unauthorized access, data leakage, or the compromise of the affected system.
How To Fix
Minimum fixed version
1.5.6-5+deb7u2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade jrubyTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The unsafe object deserialization vulnerability in jruby can be exploited by an attacker to execute arbitrary code. It is crucial to upgrade the jruby package to version 1.5.6-5+deb7u2 or later to mitigate this vulnerability. For further assistance and support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for jruby →
FAQ
jruby is a 100% pure-Java implementation of Ruby, providing a platform for running Ruby applications on the Java Virtual Machine (JVM).
Object deserialization is the process of converting serialized objects back into their original form, allowing them to be used in a program. It is a common feature in many programming languages and frameworks.
The vulnerability in jruby allows an attacker to execute arbitrary code by exploiting a flaw in the handling of YAML files. This can lead to unauthorized access, data leakage, or the compromise of the affected system.
To fix the vulnerability, it is recommended to upgrade the jruby package to version 1.5.6-5+deb7u2 or later. Detailed instructions can be found in the Debian LTS security advisories and documentation.
No specific workaround has been mentioned for this vulnerability.
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