A vulnerability in the Local Packet Transport Servicesnbsp;(LPTS) ingress frame-processing functionality of Cisconbsp;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 servicenbsp;(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.

There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-ios-xr

Security Impact Rating: Medium

CVE: CVE-2017-12355

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