PT-2020-4440 · Cisco · Cisco Ios Xe+1

Published 2020-09-24 · Updated 2020-10-07 · CVE-2020-3527

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Cisco Catalyst 9200 Series Switches (affected versions not specified)

Description: The issue is related to errors in packet processing in the Polaris kernel of Cisco IOS XE. It could allow a remote attacker to crash the device due to insufficient packet size validation. An attacker could exploit this by sending jumbo frames or frames larger than the configured MTU size to the management interface of the device. A successful exploit could allow the attacker to crash the device fully before an automatic recovery.

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

DoS

RCE

Resource Exhaustion

Weakness Enumeration

CWE-20

CWE-400

Related Identifiers

BDU:2020-04980

CVE-2020-3527

Affected Products

Cisco Catalyst 9200 Series Switches

Cisco Ios Xe

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-3527 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-JP-DOS-g5FfGm8y · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-JP-DOS-g5FfGm8y · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-3527 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-04980 · Security Note