CVE-2019-17067 : Vulnerability Insights and Analysis
Learn about CVE-2019-17067 affecting PuTTY versions before 0.73 on Windows. Find out how attackers can exploit this flaw to intercept incoming connections and steal data.
PuTTY before version 0.73 on Windows has a vulnerability that allows attackers to listen on the same port, potentially leading to the theft of incoming connections.
Understanding CVE-2019-17067
This CVE entry describes a flaw in PuTTY versions prior to 0.73 that affects Windows systems.
What is CVE-2019-17067?
PuTTY versions before 0.73 on Windows improperly open port-forwarding listening sockets, enabling attackers to eavesdrop on incoming connections.
The Impact of CVE-2019-17067
The vulnerability in PuTTY could result in attackers intercepting and stealing incoming connections, compromising the confidentiality and integrity of data transmissions.
Technical Details of CVE-2019-17067
PuTTY before version 0.73 on Windows is susceptible to a specific vulnerability.
Vulnerability Description
The flaw in PuTTY allows attackers to listen on the same port as the legitimate user, potentially leading to the theft of incoming connections.
Affected Systems and Versions
- Product: PuTTY
- Vendor: N/A
- Versions affected: All versions before 0.73
Exploitation Mechanism
Attackers exploit the vulnerability by opening port-forwarding listening sockets incorrectly, enabling them to intercept incoming connections.
Mitigation and Prevention
To address CVE-2019-17067, users and administrators should take immediate and long-term security measures.
Immediate Steps to Take
- Update PuTTY to version 0.73 or later to mitigate the vulnerability.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Implement network segmentation and access controls to limit exposure to potential attacks.
- Educate users on secure practices and awareness of social engineering tactics.
- Utilize intrusion detection and prevention systems to detect and block malicious activities.
Patching and Updates
Ensure that PuTTY is regularly updated to the latest version to address security vulnerabilities and protect against potential exploits.