Cisco IOS XR gRPC Software Denial of Service Vulnerability

high Nessus Plugin ID 130022

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS XE Software is affected by a denial of service (DoS) vulnerability exists in Ident protocol handler of Cisco IOS and IOS XE Software due to incorrectly handling memory structures, leading to a NULL pointer dereference. An unauthenticated, remote attacker can exploit this issue, via opening a TCP connection to specific ports and sending traffic over that connection, to cause the affected device to reload, resulting in a denial of service (DoS) condition.

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 CSCvm01689

Plugin Details

Severity: High

ID: 130022

File Name: cisco-sa-20190925-ios-xe-identd-dos.nasl

Version: 1.10

Type: local

Family: CISCO

Published: 10/18/2019

Updated: 9/24/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

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-2019-12647

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_xe

Required KB Items: Host/Cisco/IOS-XE/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 9/25/2019

Vulnerability Publication Date: 9/25/2019

Reference Information

CVE: CVE-2019-12647

CWE: 476

CISCO-SA: cisco-sa-20190417-ios-xr-dos

IAVA: 2019-A-0354-S

CISCO-BUG-ID: CSCvm01689

Detections

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