A vulnerability classified as problematic has been found in Cisco IOS and IOS XE (Router Operating System) (version now known). Affected is some unknown processing of the component IOSd. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

A vulnerability in the IOS daemon (IOSd) web-based management interface of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface on an affected device. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the web-based management interface or allow the attacker to access sensitive browser-based information. Cisco Bug IDs: CSCvf60862.

The bug was discovered 11/15/2017. The weakness was presented 11/16/2017 with Cisco as cisco-sa-20171115-ios as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2017-12304 since 08/03/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 01/24/2021). This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

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 $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316181 (Cisco IOS and IOS XE Software IOS daemon Cross-Site Scripting Vulnerability (cisco-sa-20171115-ios)).

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

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Type

• Router Operating System

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• Cisco

Name

• IOS
• IOS XE

License

• commercial

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