CVE-2019-16275 : What You Need to Know
Learn about CVE-2019-16275, a vulnerability in hostapd and wpa_supplicant versions before 2.10 that allows for an inaccurate disconnection indication, leading to a denial of service attack. Find out how to mitigate and prevent this security issue.
A vulnerability exists in hostapd versions before 2.10 and wpa_supplicant versions before 2.10, leading to an inaccurate disconnection indication due to mishandling of source address validation. This flaw can be exploited for a denial of service attack by sending a specially crafted 802.11 frame.
Understanding CVE-2019-16275
This CVE pertains to a vulnerability in hostapd and wpa_supplicant versions prior to 2.10 that can be exploited for a denial of service attack.
What is CVE-2019-16275?
This vulnerability arises from mishandling of source address validation in hostapd and wpa_supplicant versions before 2.10, allowing attackers to trigger an inaccurate disconnection indication, leading to a denial of service attack.
The Impact of CVE-2019-16275
The vulnerability can be exploited by sending a specially crafted 802.11 frame within the range of 802.11 communications, potentially causing a denial of service.
Technical Details of CVE-2019-16275
This section provides more in-depth technical details about the vulnerability.
Vulnerability Description
The vulnerability in hostapd and wpa_supplicant versions before 2.10 allows for an incorrect disconnection indication due to mishandling of source address validation, enabling a denial of service attack.
Affected Systems and Versions
- hostapd versions before 2.10
- wpa_supplicant versions before 2.10
Exploitation Mechanism
To exploit this vulnerability, an attacker needs to send a specially crafted 802.11 frame from within the range of 802.11 communications.
Mitigation and Prevention
Protecting systems from CVE-2019-16275 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update hostapd and wpa_supplicant to versions 2.10 or newer to mitigate the vulnerability.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Implement network segmentation to limit the impact of potential attacks.
- Regularly update and patch all software and firmware to address security vulnerabilities.
- Educate users and administrators about safe network practices.
- Employ intrusion detection and prevention systems to enhance network security.
Patching and Updates
Ensure timely installation of security updates and patches provided by the software vendors to address CVE-2019-16275.