CVE-2019-1760 : What You Need to Know
Learn about CVE-2019-1760, a vulnerability in Cisco IOS XE Software's Performance Routing Version 3 that could allow remote attackers to cause denial of service attacks by sending modified smart probe packets.
A flaw in Performance Routing Version 3 (PfRv3) of Cisco IOS XE Software could allow a remote attacker to cause a denial of service (DoS) attack by sending modified smart probe packets.
Understanding CVE-2019-1760
What is CVE-2019-1760?
The vulnerability in Cisco IOS XE Software's PfRv3 could lead to a remote, unauthenticated attacker causing a targeted device to restart by sending corrupt smart probe packets.
The Impact of CVE-2019-1760
The mishandling of corrupt smart probe packets in PfRv3 could result in a denial of service (DoS) attack on the affected system, causing it to restart.
Technical Details of CVE-2019-1760
Vulnerability Description
The flaw in PfRv3 of Cisco IOS XE Software allows attackers to exploit the vulnerability by sending modified smart probe packets, leading to device restarts.
Affected Systems and Versions
- Cisco IOS XE Software versions 3.16.4S, 3.16.4aS, 3.16.4bS, 3.16.4gS, and more are affected.
Exploitation Mechanism
- Attack Complexity: High
- Attack Vector: Network
- Availability Impact: High
- Base Score: 6.8 (Medium Severity)
- Scope: Changed
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest security updates from Cisco.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Implement network segmentation and access controls.
Patching and Updates
- Cisco has released patches to address this vulnerability in affected versions of IOS XE Software.