Vulnerability · Published Jun 3, 2020 · Assigned by cisco

CVE-2020-3200Cisco IOS and IOS XE Software Secure Shell Denial of Service Vulnerability

High 7.7

In plain English

A high-severity security flaw in Cisco IOS 12.2(58)SE from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities).

Severity (CVSS 3.0)7.7High

Exploit odds (30 days)1.7%top 22.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in the Secure Shell (SSH) server code of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. The vulnerability is due to an internal state not being represented correctly in the SSH state machine, which leads to an unexpected behavior. An attacker could exploit this vulnerability by creating an SSH connection to an affected device and using a specific traffic pattern that causes an error condition within that connection. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco IOS 12.2(58)SE	n/a

Weakness: CWE-371 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References

20200603 Cisco IOS and IOS XE Software Secure Shell Denial of Service Vulnerability vendor-advisory, x_refsource_CISCO