Learn about CVE-2023-0482, a security flaw in RESTEasy allowing local users to access sensitive information due to insecure file permissions. Get mitigation steps and updates.
This CVE, published on February 17, 2023, highlights a security vulnerability in RESTEasy that could allow a local user to read sensitive information due to insecure file permissions.
Understanding CVE-2023-0482
This section delves into the details of CVE-2023-0482, elucidating the nature of the vulnerability and its implications.
What is CVE-2023-0482?
The vulnerability in RESTEasy stems from the insecure usage of File.createTempFile() in classes like DataSourceProvider, FileProvider, and Mime4JWorkaround. This results in the creation of temporary files with lax permissions, potentially exposing them to unauthorized access by a local user.
The Impact of CVE-2023-0482
The impact of this vulnerability could lead to unauthorized disclosure of sensitive information stored in these temporary files. A malicious actor with local access to the system could exploit this to access confidential data, posing a significant security risk.
Technical Details of CVE-2023-0482
In this section, we delve deeper into the technical aspects of CVE-2023-0482, including the vulnerability description, affected systems and versions, and the exploitation mechanism.
Vulnerability Description
The vulnerability arises from the insecure handling of temporary files by RESTEasy classes like DataSourceProvider, FileProvider, and Mime4JWorkaround. This insecure implementation allows local users to read sensitive information from these temporary files.
Affected Systems and Versions
The vulnerability affects versions of RESTEasy prior to 4.7.8.Final. Systems using affected versions are at risk of exposing sensitive data due to insecure file permissions in temporary files created by the mentioned classes.
Exploitation Mechanism
To exploit this vulnerability, a local user could leverage the insecure file permissions set by RESTEasy when creating temporary files in the affected classes. By reading these files, unauthorized access to sensitive information could be obtained.
Mitigation and Prevention
This section outlines steps to mitigate the risks posed by CVE-2023-0482, including immediate measures and long-term security practices to enhance system protection.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates