CVE-2017-6729 : Exploit Details and Defense Strategies
Discover the impact of CVE-2017-6729, a Cisco StarOS vulnerability allowing remote attackers to cause a denial of service condition. Learn about affected systems and versions, exploitation details, and mitigation steps.
A vulnerability in the Border Gateway Protocol (BGP) processing functionality of the Cisco StarOS operating system for Cisco ASR 5000 Series Routers and Cisco Virtualized Packet Core (VPC) Software could allow an unauthenticated, remote attacker to cause the BGP process on an affected system to reload, resulting in a denial of service (DoS) condition.
Understanding CVE-2017-6729
This CVE entry describes a denial of service vulnerability affecting Cisco StarOS operating system.
What is CVE-2017-6729?
The vulnerability in Cisco StarOS allows remote attackers to force the BGP process on a targeted system to reload, leading to a denial of service state.
The Impact of CVE-2017-6729
- An unauthenticated attacker can exploit the vulnerability to cause a DoS condition on affected systems.
Technical Details of CVE-2017-6729
This section provides technical details about the vulnerability.
Vulnerability Description
- The vulnerability lies in the BGP processing functionality of Cisco StarOS.
Affected Systems and Versions
- Affected products include Cisco ASR 5000 Series Routers and Cisco Virtualized Packet Core Software running on Cisco StarOS with BGP enabled.
- Known affected versions: 16.4.1, 19.1.0, 21.1.0, and 21.1.M0.65824.
- Known fixed versions: 21.3.A0.65902, 21.2.A0.65905, 21.1.b0.66164, 21.1.V0.66014, 21.1.R0.65898, 21.1.M0.65894, 21.1.0.66030, and 21.1.0.
Exploitation Mechanism
- Attackers can exploit the vulnerability remotely without authentication, causing the BGP process to reload.
Mitigation and Prevention
Learn how to mitigate and prevent the CVE-2017-6729 vulnerability.
Immediate Steps to Take
- Apply the available patches provided by Cisco to fix the vulnerability.
- Disable BGP if not required for network operations.
Long-Term Security Practices
- Regularly monitor and update network security measures.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Ensure all affected systems are updated with the fixed versions mentioned above.