CVE-2019-1834 : Exploit Details and Defense Strategies
Learn about CVE-2019-1834, a vulnerability in Cisco Aironet Series Access Points that allows an adjacent attacker to trigger a denial of service condition. Find out the impact, affected systems, and mitigation steps.
A vulnerability in Cisco Aironet Series Access Points could allow an adjacent attacker to cause a denial of service (DoS) condition. The flaw lies in the internal packet processing function of the APs.
Understanding CVE-2019-1834
This CVE involves a vulnerability in Cisco Aironet Series Access Points that could be exploited by an adjacent attacker to trigger a DoS situation.
What is CVE-2019-1834?
The vulnerability allows an unauthenticated attacker near the affected AP to disrupt its operation by sending carefully crafted wireless packets, triggering a DoS condition.
The Impact of CVE-2019-1834
- CVSS Base Score: 7.4 (High Severity)
- Attack Vector: Adjacent Network
- Availability Impact: High
- The vulnerability could lead to a DoS situation on the impacted AP.
Technical Details of CVE-2019-1834
This section provides more technical insights into the vulnerability.
Vulnerability Description
The flaw in the internal packet processing function of Cisco Aironet Series Access Points allows an adjacent attacker to cause a DoS situation by sending malformed wireless client packets.
Affected Systems and Versions
- Product: Cisco Aironet Access Point Software
- Vendor: Cisco
- Affected Version: 8.5(131.0)
Exploitation Mechanism
- The attacker needs to send carefully manipulated wireless packets to the vulnerable AP to exploit the flaw.
- Successful exploitation could trigger a security violation on the adjoining switch port, resulting in a DoS condition.
Mitigation and Prevention
Protecting systems from CVE-2019-1834 involves taking immediate steps and implementing long-term security practices.
Immediate Steps to Take
- Apply available mitigations for the vulnerability.
- Ensure proper switch configurations to prevent exploitation.
Long-Term Security Practices
- Regularly update and patch affected systems.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Check for patches and updates provided by Cisco to address the vulnerability.