Detections
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Cisco IOS XR OSPF Link State Advertisement PCE DoS (cisco-sa-20160104-iosxr)

high Nessus Plugin ID 87819

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Synopsis

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

Description

The remote Cisco IOS XR device is affected by a denial of service vulnerability due to the number of Open Shortest Path First (OSPF) Path Computation Elements (PCEs) configured for the OSPF Link State Advertisement (LSA) opaque area update. An unauthenticated, remote attacker can exploit this, via a specially crafted OSPF LSA update, to cause a denial of service condition.

Solution

Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20160104-iosxr.

See Also

http://www.nessus.org/u?6160ca1f

Plugin Details

Severity: High

ID: 87819

File Name: cisco-sa-20160104-iosxr.nasl

Version: 1.14

Type: combined

Family: CISCO

Published: 1/8/2016

Updated: 4/8/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2015-6432

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/4/2015

Vulnerability Publication Date: 1/4/2015

Reference Information

CVE: CVE-2015-6432

BID: 79831

CISCO-SA: cisco-sa-20160104-iosxr

CISCO-BUG-ID: CSCuw83486