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CVE-2017-12304: Cisco IOS web management can run malicious scripts

CVE-2017-12304 · published 8 years ago

Summary

The web-based management page in Cisco IOS and IOS XE does not properly check what users enter. An attacker could trick an administrator into clicking a specially crafted link, causing unwanted code to run in the browser and potentially exposing sensitive information. Update the software to the latest version or apply the vendor's recommended patch to fix the issue.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
cisco	ios	15.7\(2.0z\)m `cpe:2.3:o:cisco:ios:15.7\(2.0z\)m:::::::*`

Original advisory text

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.

References

http://www.securityfocus.com/bid/101856 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039825 Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2... Vendor Advisory

Fix within

Internet-facing 60 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit (estimated)
Gives an attacker partial control (estimated)

Severity

6.1 Medium

Exploitation

1% chance of attack within 30 days

Type

CWE-79Cross-site Scripting (XSS)

Timeline

Published16 Nov 2017

Updated4 Nov 2026

First seen29 Sep 2026

Sources

CVE-2017-12304 · NVD

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