CVE-2020-3527
High
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.
SeverityHigh
CVSS8.6
Exploit probability—
Product
Cisco Ios Xe
PublishedSep 24, 2020
First seenSep 24, 2020
Weakness typeCWE-20Improper input validation
How to fix
Update
- cisco ios_xe16.9.5, 16.12.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco ios_xe | 16.9.0 ≤ v < 16.9.5, 16.12.0 ≤ v < 16.12.3 | 16.9.5, 16.12.3 |
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