CVE-2017-12260 : What You Need to Know
Learn about CVE-2017-12260, a vulnerability in Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones allowing remote attackers to cause denial of service. Find mitigation steps and updates here.
A weakness in the Session Initiation Protocol (SIP) implementation in Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones could allow unauthorized remote attackers to cause a denial of service (DoS) by rendering the device unresponsive.
Understanding CVE-2017-12260
What is CVE-2017-12260?
The vulnerability in Cisco IP Phones could be exploited by attackers to disrupt the device's functionality, leading to a DoS situation.
The Impact of CVE-2017-12260
The vulnerability allows attackers to send malicious SIP request messages to the device, causing it to become unresponsive and requiring manual restart.
Technical Details of CVE-2017-12260
Vulnerability Description
- The flaw lies in the mishandling of SIP request messages by the affected Cisco IP Phones.
Affected Systems and Versions
- Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones running firmware release 7.6.2SR1 or earlier.
Exploitation Mechanism
- Attackers exploit the vulnerability by sending specially crafted SIP payloads to the device.
Mitigation and Prevention
Immediate Steps to Take
- Apply patches provided by Cisco to address the vulnerability.
- Monitor network traffic for any suspicious SIP requests.
Long-Term Security Practices
- Regularly update firmware and security patches for the IP Phones.
- Implement network segmentation to isolate critical devices.
Patching and Updates
- Cisco has released patches to fix the vulnerability in affected devices.