Cisco IOS XR Software Privilege Escalation (cisco-sa-20170621-ios1)

medium Nessus Plugin ID 101267

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, the Cisco IOS XR software running on the remote device is affected by a privilege escalation vulnerability in the command line interface due to incorrect permission settings on binary files. A local attacker can exploit this, via specially crafted commands, to overwrite binary files on the filesystem and thereby gain elevated root privileges.

Note that this vulnerability only affects Linux-based versions of Cisco IOS XR software.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvb99384.

Plugin Details

Severity: Medium

ID: 101267

File Name: cisco-sa-20170621-ios1.nasl

Version: 1.5

Type: combined

Family: CISCO

Published: 7/7/2017

Updated: 4/8/2021

Configuration: Enable paranoid mode

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-2017-6718

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_xr

Required KB Items: Settings/ParanoidReport, Host/Cisco/IOS-XR/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 6/21/2017

Vulnerability Publication Date: 6/21/2017

Reference Information

CVE: CVE-2017-6718

BID: 99226

CISCO-SA: cisco-sa-20170621-ios1

CISCO-BUG-ID: CSCvb99384

Detections

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