PT-2021-2567 · Cisco · Cisco Ios Xr 64-Bit+1

Darell Tan Jia Jun · Published 2021-04-07 · Updated 2021-04-20 · CVE-2021-1485

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) Cisco IOS XR 64-Bit Software (affected versions not specified)

Description: A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges on the underlying Linux operating system (OS) of an affected device. This vulnerability is due to insufficient input validation of commands that are supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to an affected command. A successful exploit could allow the attacker to execute commands on the underlying Linux OS with root privileges.

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

Argument Injection

Weakness Enumeration

CWE-88

Related Identifiers

BDU:2021-02018

CVE-2021-1485

Affected Products

Cisco Ios Xr 64-Bit

Cisco Ios Xr

References · 5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cmdinj-vsKGherc · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1485 · Security Note
• https://osv.dev/vulnerability/CVE-2021-1485 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-02018 · Security Note
• https://t.me/cvenotify/12887 · Telegram Post