Cisco · Cisco Ios · CVE-2019-12668
**Name of the Vulnerable Software and Affected Versions**
Cisco IOS and Cisco IOS XE Software (affected versions not specified)
**Description**
The issue is related to insufficient input validation of the `banner` parameter in the web framework code, allowing an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the web interface. An attacker could exploit this by crafting a `banner` parameter and saving it, then convincing a user to access a malicious link or intercepting a user request and injecting malicious code. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected web interface or access sensitive browser-based information.
**Recommendations**
For Cisco IOS and Cisco IOS XE Software, update to a version that includes the fix for this issue, as software updates have been released by Cisco to address this vulnerability.
As a temporary workaround, consider restricting access to the web interface of the affected software to minimize the risk of exploitation.
Avoid using the `banner` parameter in the affected web interface until the issue is resolved.