PT-2020-1377 · Cisco · Cisco Ios Xr

Published 2020-01-22 · Updated 2022-05-12 · CVE-2019-16027

Positive Technologies (AI Summary)

CVSS v3.1

7.7

High

Base vector

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

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

Description A vulnerability in the implementation of the Intermediate System-to-Intermediate System (IS-IS) routing protocol functionality could allow an authenticated, remote attacker to cause a denial of service (DoS) condition in the IS-IS process. The vulnerability is due to improper handling of a Simple Network Management Protocol (SNMP) request for specific Object Identifiers (OIDs) by the IS-IS process. An attacker could exploit this vulnerability by sending a crafted SNMP request to the affected device. A successful exploit could allow the attacker to cause a DoS condition in the IS-IS process.

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

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-00325

CVE-2019-16027

Affected Products

Cisco Ios Xr

References · 5

• https://bdu.fstec.ru/vul/2020-00325 · Security Note
• https://osv.dev/vulnerability/CVE-2019-16027 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-16027 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-ios-xr-dos · Vendor Advisory
• https://t.me/cvenotify/416 · Telegram Post