Vulnerability · Published Jun 3, 2020 · Assigned by cisco

CVE-2020-3203Cisco IOS XE Software Catalyst 9800 Series Wireless Controllers Denial of Service Vulnerability

High 8.6

In plain English

A high-severity uncontrolled resource consumption in Cisco IOS XE Software 16.1.1 from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.0)8.6High

Exploit odds (30 days)0.8%top 41.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in the locally significant certificate (LSC) provisioning feature of Cisco Catalyst 9800 Series Wireless Controllers that are running Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak that could lead to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain public key infrastructure (PKI) packets. An attacker could exploit this vulnerability by sending crafted Secure Sockets Layer (SSL) packets to an affected device. A successful exploit could cause an affected device to continuously consume memory, which could result in a memory allocation failure that leads to a crash and causes a DoS condition.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco IOS XE Software 16.1.1	n/a

Weakness: CWE-400 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References

20200603 Cisco IOS XE Software Catalyst 9800 Series Wireless Controllers Denial of Service Vulnerability vendor-advisory, x_refsource_CISCO