A vulnerability, which was classified as critical, was found in Cisco UCS B-Series Blade Server (Virtualization Software). This affects some unknown processing of the component Local Management CLI. The manipulation as part of a Parameter leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on integrity, and availability. The summary by CVE is:

A vulnerability in the local management CLI implementation for specific commands on the Cisco UCS B-Series Blade Servers could allow an authenticated, local attacker to overwrite an arbitrary file on disk. It is also possible the attacker could inject CLI command parameters that should not be allowed for a specific subset of local management CLI commands. The vulnerability is due to lack of proper input validation of user input for local management CLI commands. An attacker could exploit this vulnerability by authenticating to the device and issuing a crafted form of a limited subset of local management CLI commands. An exploit could allow the attacker to overwrite an arbitrary files on disk or inject CLI command parameters that should have been disabled. This vulnerability is fixed in software version 4.0(2a) and later.

The bug was discovered 04/17/2019. The weakness was disclosed 04/18/2019 as cisco-sa-20190417-ucs-cli-inj as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is uniquely identified as CVE-2019-1725 since 12/06/2018. An attack has to be approached locally. Required for exploitation is a authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316414 (Cisco UCS B-Series Blade Servers Local Management CLI Arbitrary File Creation or CLI Parameter Injection Vulnerability(cisco-sa-20190417-ucs-cli-inj)).

Upgrading to version 4.0(2a) eliminates this vulnerability.

Productinfo

Type

• Virtualization Software

Vendor

• Cisco

Name

• UCS B-Series Blade Server

License

• commercial

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• 🔍

CPE 2.2info

• 🔍

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