CVE-2019-0195 : What You Need to Know

Apache Tapestry 5.4.0 to 5.4.3 allows attackers to download specific files by manipulating URLs, potentially leading to a Java deserialization attack.

Understanding CVE-2019-0195

Apache Tapestry is vulnerable to information disclosure through classpath asset file URL manipulation, enabling attackers to execute Java deserialization attacks.

What is CVE-2019-0195?

Attackers can guess and download files by manipulating classpath asset file URLs
Exploiting the tapestry.hmac-passphrase configuration symbol can lead to Java deserialization attacks
The vulnerability is present in the t:formdata parameter of the Form component

The Impact of CVE-2019-0195

Attackers can obtain sensitive information from the classpath, potentially leading to unauthorized access
Execution of malicious Java code through Java deserialization attacks

Technical Details of CVE-2019-0195

Apache Tapestry 5.4.0 to 5.4.3 is affected by this vulnerability.

Vulnerability Description

Attackers can download specific files by manipulating URLs
Exploiting the tapestry.hmac-passphrase configuration symbol can lead to Java deserialization attacks

Affected Systems and Versions

Product: Apache Tapestry
Versions: 5.4.0 to 5.4.3

Exploitation Mechanism

Manipulation of classpath asset file URLs
Exploiting the t:formdata parameter of the Form component

Mitigation and Prevention

Immediate Steps to Take:

Update Apache Tapestry to the latest version
Monitor and restrict access to sensitive files
Implement proper input validation mechanisms Long-Term Security Practices:
Regular security assessments and audits
Educate developers on secure coding practices
Implement network segmentation and access controls

Patching and Updates

Apply patches provided by Apache Tapestry
Stay informed about security updates and best practices