Denial of service in Cisco UCS Central Software

1) Denial of service

EUVDB-ID: #VU10109

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0094

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in IPv6 ingress packet processing for Cisco UCS Central Software due to insufficient rate limiting protection for IPv6 ingress traffic. A remote attacker can send a high rate of IPv6 packets, trigger CPU and resource constraints and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Cisco UCS Central Software: 1.4.1a

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180117-ucs

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.