CVE-2017-11353 : Security Advisory and Response
Learn about CVE-2017-11353, a race condition vulnerability in yadm 1.10.0 that could grant unauthorized access to SSH and PGP keys. Find mitigation steps and long-term security practices here.
Version 1.10.0 of yadm, an additional dotfile manager, has a race condition issue related to git commands setting permissions for new files and directories, potentially granting access to SSH and PGP keys.
Understanding CVE-2017-11353
This CVE entry highlights a security vulnerability in yadm version 1.10.0.
What is CVE-2017-11353?
The CVE-2017-11353 vulnerability in yadm 1.10.0 is due to a race condition issue associated with how git commands establish permissions for new files and directories. This flaw could lead to unauthorized access to sensitive SSH and PGP keys.
The Impact of CVE-2017-11353
The vulnerability poses a significant security risk as it could potentially expose critical SSH and PGP keys to unauthorized entities, compromising the confidentiality and integrity of the affected systems.
Technical Details of CVE-2017-11353
This section delves into the technical aspects of the CVE entry.
Vulnerability Description
The race condition in yadm 1.10.0 arises from the behavior of git commands when setting permissions for new files and directories, creating a security loophole that could be exploited to access SSH and PGP keys.
Affected Systems and Versions
- Affected Version: 1.10.0
- Systems: All systems running yadm 1.10.0 are vulnerable to this issue.
Exploitation Mechanism
The vulnerability can be exploited by malicious actors to gain unauthorized access to SSH and PGP keys by leveraging the race condition in the way git commands handle permissions.
Mitigation and Prevention
Protecting systems from CVE-2017-11353 requires immediate action and long-term security measures.
Immediate Steps to Take
- Update yadm to a patched version that addresses the race condition vulnerability.
- Monitor and restrict access to sensitive SSH and PGP keys.
Long-Term Security Practices
- Regularly review and update permissions for files and directories to prevent unauthorized access.
- Implement multi-factor authentication for enhanced security.
Patching and Updates
- Stay informed about security updates for yadm and promptly apply patches to mitigate known vulnerabilities.