PT-2020-3847 · Cisco · Cisco Ios Xr

Published 2020-09-02 · Updated 2020-09-09 · CVE-2020-3473

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Cisco IOS XR Software (affected versions not specified)

Description: A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local CLI shell user to elevate privileges and gain full administrative control of the device. The vulnerability is due to incorrect mapping of a command to task groups within the source code. An attacker could exploit this vulnerability by first authenticating to the local CLI shell on the device and using the CLI command to bypass the task group-based checks. A successful exploit could allow the attacker to elevate privileges and perform actions on the device without authorization checks.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Incorrect Authorization

Weakness Enumeration

CWE-863

CWE-264

Related Identifiers

BDU:2020-04209

CVE-2020-3473

Affected Products

Cisco Ios Xr

References · 4

• https://bdu.fstec.ru/vul/2020-04209 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-3473 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-LJtNFjeN · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-3473 · Vendor Advisory