Cisco IOS XR Authenticated User Privilege Escalation (cisco-sa-iosxr-cli-privescl-sDVEmhqv)

high Nessus Plugin ID 140799

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Synopsis

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

Description

According to its self-reported version, Cisco IOS XR Software is affected by a privilege escalation vulnerability in task group assignment for a specific CLI command due to incorrect mapping of task groups assignments. An authenticated, local attacker with read permissions could exploit this vulnerability by issuing a specific command that should required administrative privileges. A successful exploit could allow the attacker to invalidate the integrity of the disk and cause the device to restart. There are workarounds that address this vulnerability.

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

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvu79978, CSCvu99038, CSCvv05925

Plugin Details

Severity: High

ID: 140799

File Name: cisco-sa-iosxr-cli-privescl-sDVEmhqv.nasl

Version: 1.12

Type: combined

Family: CISCO

Published: 9/25/2020

Updated: 9/10/2021

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.1

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

CVSS Score Source: CVE-2020-3530

CVSS v3

Risk Factor: High

Base Score: 8.4

Temporal Score: 7.3

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/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: 9/2/2020

Vulnerability Publication Date: 9/2/2020

Reference Information

CVE: CVE-2020-3530

CWE: 264

CISCO-SA: cisco-sa-iosxr-cli-privescl-sDVEmhqv

IAVA: 2020-A-0374-S

CISCO-BUG-ID: CSCvu79978, CSCvu99038, CSCvv05925

Detections

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