CVE-2017-12217 Denial of service in Cisco ASR 5500 System Architecture Evolution Gateway
Remote unauthenticated attackers can cause a partial denial of service on Cisco ASR 5500 SAE Gateways by sending malformed GTP packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-12217?
CVE-2017-12217 is a medium-severity denial of service vulnerability in Cisco ASR 5500 System Architecture Evolution Gateway, published on 7 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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 is due to improper input validation of GPRS Tunneling Protocol packet headers. An attacker could exploit this vulnerability by sending a malformed GPRS Tunneling Protocol packet to an affected device. A successful exploit could allow the attacker to cause the GTPUMGR process on an affected device to restart unexpectedly, resulting in a partial DoS condition. If the GTPUMGR process restarts, there could be a brief impact on traffic passing through the device. Cisco Bug IDs: CSCve07119.
Weakness: CWE-20
Which versions are affected by CVE-2017-12217?
It affects 1 product.
Products include Cisco Asr 5500 Firmware.
How do I fix CVE-2017-12217?
No fix has been published for CVE-2017-12217 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2017-12217 being exploited?
There is no known exploitation of CVE-2017-12217 in the wild and no public exploit code.
Sources
Also known as GHSA-8c25-vvg9-pf58.