CVE-2017-0380 : What You Need to Know
Learn about CVE-2017-0380 affecting Tor versions before 0.3.1.7. Attackers exploit uninitialized stack data to access sensitive information in log files of hidden services.
CVE-2017-0380 was published on September 18, 2017, and affects Tor versions before 0.3.1.7. The vulnerability allows attackers to access sensitive information through log files of hidden services.
Understanding CVE-2017-0380
This CVE involves the rend_service_intro_established function in Tor versions prior to 0.3.1.7, enabling unauthorized access to sensitive data.
What is CVE-2017-0380?
The vulnerability in Tor versions before 0.3.1.7 allows attackers to exploit uninitialized stack data in error messages, leading to unauthorized access to sensitive information.
The Impact of CVE-2017-0380
The vulnerability permits attackers to access sensitive data by leveraging log files of hidden services, compromising the confidentiality of information.
Technical Details of CVE-2017-0380
CVE-2017-0380 involves the following technical aspects:
Vulnerability Description
The rend_service_intro_established function in Tor versions before 0.3.1.7 allows attackers to obtain sensitive information by exploiting uninitialized stack data in error messages.
Affected Systems and Versions
- Product: Tor before 0.3.1.7
- Versions: Tor before 0.3.1.7
Exploitation Mechanism
Attackers can exploit the vulnerability by accessing log files of hidden services and utilizing uninitialized stack data in error messages.
Mitigation and Prevention
To address CVE-2017-0380, consider the following mitigation strategies:
Immediate Steps to Take
- Update Tor to version 0.3.1.7 or later to mitigate the vulnerability.
- Enable SafeLogging to prevent unauthorized access to sensitive information.
Long-Term Security Practices
- Regularly monitor and review log files for any unauthorized access.
- Implement access controls to restrict access to sensitive data.
Patching and Updates
- Apply patches provided by Tor to address the vulnerability.