PT-2021-1919 · Cisco · Cisco Ios Xr

Published 2021-02-03 · Updated 2022-09-20 · CVE-2021-1243

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

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

Description The issue is related to insufficient access control in the Local Packet Transport Services (LPTS) component of the SNMP protocol in Cisco IOS XR Software. This could allow a remote attacker to bypass existing security restrictions and connect to the device on configured SNMP ports, despite management plane protection being configured to deny access. Valid credentials are required to execute any SNMP requests.

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

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

BDU:2021-00709

CVE-2021-1243

Affected Products

Cisco Ios Xr

References · 5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-7MKrW7Nq · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-00709 · Security Note
• https://osv.dev/vulnerability/CVE-2021-1243 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1243 · Security Note
• https://t.me/cibsecurity/23099 · Telegram Post