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Cisco ASR 9000 Series Aggregation Services Routers Precision Time Protocol DoS (cisco-sa-20180815-asr-ptp-dos)

high Nessus Plugin ID 133226

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS XR Software is affected by a denial of service (DoS) vulnerability in the Local Packet Transport Services (LPTS) feature set of Cisco ASR 9000 Series Aggregation Services Routers. This is due to a lack of input and validation checking on certain Precision Time Protocol (PTP) ingress traffic to an affected device. An unauthenticated, remote attacker can exploit this, by injecting malformed traffic into an affected device, in order to cause the device to stop responding.

Please see the included Cisco BIDs and Cisco Security Advisory for more information

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvj22858

See Also

http://www.nessus.org/u?2d903f5a

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvj22858

Plugin Details

Severity: High

ID: 133226

File Name: cisco-sa-20180815-asr-ptp-dos.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 1/27/2020

Updated: 4/8/2021

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2018-0418

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 8/15/2018

Vulnerability Publication Date: 8/15/2018

Reference Information

CVE: CVE-2018-0418

BID: 105185