Cisco IOS XE Software Digital Signature Verification Bypass (cisco-sa-20180926-digsig)

medium Nessus Plugin ID 132041

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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 digital signature verification bypass vulnerability in the Image Verification feature. An authenticated, local attacker can exploit this, by uploading a malicious software image or file to an affected device, in order to bypass digital signature verification checks for software images and files to install a malicious software image or file.

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

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID(s) CSCvh15737.

Plugin Details

Severity: Medium

ID: 132041

File Name: cisco-sa-20180926-digsig.nasl

Version: 1.7

Type: combined

Family: CISCO

Published: 12/13/2019

Updated: 5/3/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2018-15374

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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: 9/26/2018

Vulnerability Publication Date: 9/26/2018

Reference Information

CVE: CVE-2018-15374

BID: 105415

CISCO-SA: cisco-sa-20180926-digsig

CISCO-BUG-ID: CSCvh15737

Detections

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