Cisco IOS XE Software Encrypted Traffic Analytics Denial of Service Vulnerability

high Nessus Plugin ID 123791

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 following vulnerability

- A vulnerability in the Cisco Encrypted Traffic Analytics (ETA) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.The vulnerability is due to a logic error that exists when handling a malformed incoming packet, leading to access to an internal data structure after it has been freed. An attacker could exploit this vulnerability by sending crafted, malformed IP packets to an affected device. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition. (CVE-2019-1741)

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 CSCvi77889

See Also

http://www.nessus.org/u?23365f93

http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-71135

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvi77889

Plugin Details

Severity: High

ID: 123791

File Name: cisco-sa-20190327-eta-dos.nasl

Version: 1.11

Type: combined

Family: CISCO

Published: 4/5/2019

Updated: 5/3/2024

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-2019-1741

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: 3/27/2019

Vulnerability Publication Date: 3/27/2019

Reference Information

CVE: CVE-2019-1741

CWE: 20

CISCO-SA: cisco-sa-20190327-eta-dos

IAVA: 2019-A-0097-S

CISCO-BUG-ID: CSCvi77889