Cisco IOS XR GSR 12000 Port Range BFD DoS (cisco-sa-20160311-gsr)

medium Nessus Plugin ID 90527


The remote device is missing a vendor-supplied security patch.


The remote Cisco IOS XR device is a Gigabit Switch Router (GSR) 12000 Series router model and is a version that is missing a vendor-supplied security patch. It is, therefore, affected by a denial of service vulnerability in the ASIC UDP ingress receive function due to improper validation for the presence of a Bidirectional Forwarding Detection (BFD) header on the UDP packet. An unauthenticated, remote attacker can exploit this to cause a line-card to unexpectedly restart by sending to the affected device a specially crafted UDP packet with a specific UDP port range and Time-to-Live field.


Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20160311-gsr.

See Also

Plugin Details

Severity: Medium

ID: 90527

File Name: cisco-sa-20160311-12kgsr-iosxr.nasl

Version: 1.9

Type: combined

Family: CISCO

Published: 4/14/2016

Updated: 4/8/2021

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:A/AC:H/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2016-1361


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios_xr

Required KB Items: Host/Cisco/IOS-XR/Version, Host/Cisco/IOS-XR/Model

Exploit Ease: No known exploits are available

Patch Publication Date: 3/11/2016

Vulnerability Publication Date: 3/11/2016

Reference Information

CVE: CVE-2016-1361