Cisco IOS XE Web-based User Interface Parameter input validation

Summaryinfo

A vulnerability has been found in Cisco IOS XE and classified as critical. The impacted element is an unknown function of the component Web-based User Interface. The manipulation as part of Parameter leads to input validation. This vulnerability is traded as CVE-2019-1862. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Cisco IOS XE (Router Operating System) (the affected version unknown). This issue affects an unknown part of the component Web-based User Interface. The manipulation as part of a Parameter leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the web-based user interface (Web UI) of Cisco IOS XE Software could allow an authenticated, remote attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability occurs because the affected software improperly sanitizes user-supplied input. An attacker who has valid administrator access to an affected device could exploit this vulnerability by supplying a crafted input parameter on a form in the Web UI and then submitting that form. A successful exploit could allow the attacker to run arbitrary commands on the device with root privileges, which may lead to complete system compromise.

The bug was discovered 05/13/2019. The weakness was shared 05/13/2019 as cisco-sa-20190513-webui as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2019-1862 since 12/06/2018. The attack may be initiated remotely. A simple authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $25k-$100k at the moment (estimation calculated on 09/17/2023).

The commercial vulnerability scanner Qualys is able to test this issue with plugin 316452 (Cisco IOS XE Software Web UI Command Injection Vulnerability(cisco-sa-20190513-webui)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XE

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

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