CVE-2020-3527 — Improper Input Validation in Cisco IOS XE

CWE-20 — Improper Input ValidationCWE-400 — Uncontrolled Resource Consumption4 documents4 sources
Severity
8.6HIGHNVD
EPSS
0.7%
top 28.32%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco IOS XECisco IOS XE Software
Timeline
PublishedSep 24
Latest updateMay 24

Description

A vulnerability in the Polaris kernel of Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to crash the device. The vulnerability is due to insufficient packet size validation. An attacker could exploit this vulnerability by sending jumbo frames or frames larger than the configured MTU size to the management interface of this device. A successful exploit could allow the attacker to crash the device fully before an automatic recovery.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 3.9 | Impact: 4.0

Affected Packages2 packages

▶NVDcisco/ios_xe16.9.0 — 16.9.5+1

🔴Vulnerability Details

2
GHSA
GHSA-wq7w-fc8m-6mr2: A vulnerability in the Polaris kernel of Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to crash the device↗2022-05-24
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CVEList
Cisco Catalyst 9200 Series Switches Jumbo Frame Denial of Service Vulnerability↗2020-09-24
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📋Vendor Advisories

1
Cisco
Cisco Catalyst 9200 Series Switches Jumbo Frame Denial of Service Vulnerability↗2020-09-24
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CVE-2020-3527 — Improper Input Validation in Cisco | cvebase