Cisco IOS and IOS XE Software Smart Call Home Certificate Validation Vulnerability

medium Nessus Plugin ID 123790

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 Smart Call Home feature of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to gain unauthorized read access to sensitive data using an invalid certificate.The vulnerability is due to insufficient certificate validation by the affected software. An attacker could exploit this vulnerability by supplying a crafted certificate to an affected device.
A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt confidential information on user connections to the affected software.
(CVE-2019-1757)

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 CSCvg83741

See Also

http://www.nessus.org/u?6d1ccbd4

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvg83741

Plugin Details

Severity: Medium

ID: 123790

File Name: cisco-sa-20190327-call-home-cert.nasl

Version: 1.10

Type: local

Family: CISCO

Published: 4/5/2019

Updated: 5/21/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2019-1757

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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-2019-1757

CWE: 295

CISCO-SA: cisco-sa-20190327-call-home-cert

IAVA: 2019-A-0097-S

CISCO-BUG-ID: CSCvg83741