CVE-2019-15265 : What You Need to Know
Learn about CVE-2019-15265, a high-severity vulnerability in Cisco Aironet Access Points that allows adjacent attackers to cause denial of service. Find mitigation steps and preventive measures here.
Cisco Aironet Access Points Bridge Protocol Data Unit Port Disable Denial of Service Vulnerability
Understanding CVE-2019-15265
This CVE involves a security flaw in the bridge protocol data unit forwarding capability of Cisco Aironet Access Points, potentially leading to a denial of service attack.
What is CVE-2019-15265?
The vulnerability allows an adjacent attacker to manipulate BPDU frames, causing an Access Point port to become error disabled, resulting in a denial of service condition.
The Impact of CVE-2019-15265
- Severity: High (CVSS Base Score: 7.4)
- Attack Vector: Adjacent Network
- Availability Impact: High
- Unauthorized attackers can disrupt network services by causing Access Point ports to go offline.
Technical Details of CVE-2019-15265
The technical aspects of the vulnerability are as follows:
Vulnerability Description
- The flaw lies in the incorrect forwarding of specific wireless client BPDUs.
- Attackers can exploit this flaw by sending manipulated BPDU frames.
Affected Systems and Versions
- Product: Cisco Aironet Access Point Software
- Vendor: Cisco
- Affected Version: Unspecified
Exploitation Mechanism
- Attack Complexity: Low
- Privileges Required: None
- Scope: Changed
- Attack Vector: Adjacent Network
Mitigation and Prevention
Steps to address and prevent exploitation of CVE-2019-15265:
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly.
- Monitor network traffic for any signs of BPDU manipulation.
Long-Term Security Practices
- Implement network segmentation to limit the impact of potential attacks.
- Regularly update and patch network devices to mitigate known vulnerabilities.
Patching and Updates
- Regularly check for security advisories from Cisco and apply recommended patches.