Vulnerability identifier: #VU68873
Vulnerability risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-371
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Cisco IOS
Operating systems & Components /
Operating system
Cisco IOS XE
Operating systems & Components /
Operating system
Vendor: Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perofrm a denial of service (DoS) attack.
The vulnerability exists due to an internal state not being represented correctly in the Secure Shell (SSH) server. A remote user can create an SSH connection to an affected device and cause a denial of service condition.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Cisco IOS: 16.5.1
Cisco IOS XE: 16.5(1)
External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssh-dos-Un22sd2A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.