Learn about CVE-2017-12217, a vulnerability in Cisco ASR 5500 System Architecture Evolution Gateways that could lead to a partial denial of service (DoS) attack. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A vulnerability in the General Packet Radio Service (GPRS) Tunneling Protocol ingress packet handler of Cisco ASR 5500 System Architecture Evolution (SAE) Gateways could allow an unauthenticated, remote attacker to cause a partial denial of service (DoS) condition on an affected device. The vulnerability arises from inadequate validation of GPRS Tunneling Protocol packet headers.
Understanding CVE-2017-12217
This CVE entry describes a vulnerability in the Cisco ASR 5500 System Architecture Evolution (SAE) Gateways that could lead to a partial denial of service (DoS) attack.
What is CVE-2017-12217?
The vulnerability in the ingress packet handler of the General Packet Radio Service (GPRS) Tunneling Protocol within the Cisco ASR 5500 SAE Gateways could result in a partial DoS scenario on affected devices. The issue stems from insufficient validation of GPRS Tunneling Protocol packet headers.
The Impact of CVE-2017-12217
Exploiting this vulnerability could cause the GTPUMGR process on the affected device to restart unexpectedly, leading to a partial DoS condition. During the process restart, there may be a temporary impact on the flow of traffic passing through the device.
Technical Details of CVE-2017-12217
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability is a result of improper input validation of GPRS Tunneling Protocol packet headers, allowing an attacker to send a manipulated packet to trigger a partial DoS scenario.
Affected Systems and Versions
Exploitation Mechanism
Mitigation and Prevention
Protecting systems from CVE-2017-12217 requires immediate actions and long-term security practices.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates