CVE-2017-12355 Denial of service in Cisco IOS XR

Medium 5.3 Published 30 Nov 2017 Updated 5 Aug 2024

Unauthenticated remote attackers can cause a brief denial of service in Cisco IOS XR by sending crafted XML requests to the management interface.

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-2017-12355?

CVE-2017-12355 is a medium-severity denial of service vulnerability in Cisco Ios Xr, published on 30 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Local Packet Transport Services (LPTS) ingress frame-processing functionality of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause one of the LPTS processes on an affected system to restart unexpectedly, resulting in a brief denial of service (DoS) condition. The vulnerability is due to incomplete LPTS frame validation by the affected software. An attacker could exploit this vulnerability by sending crafted XML requests to the management interface of an affected system. A successful exploit could allow the attacker to cause one of the LPTS processes on the affected system to restart unexpectedly, which would impact LPTS traffic and cause a brief DoS condition while the process restarts. Cisco Bug IDs: CSCvf76332.

Weakness: CWE-20, CWE-399

Which versions are affected by CVE-2017-12355?

It affects 1 product.

Products include Cisco Ios Xr.

How do I fix CVE-2017-12355?

No fix has been published for CVE-2017-12355 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-2017-12355 being exploited?

There is no known exploitation of CVE-2017-12355 in the wild and no public exploit code.

All Cisco Ios Xr vulnerabilities

Sources

Also known as GHSA-x59f-6gm6-9rr3.