A vulnerability in the web framework of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to inject a crafted HTTP header that could introduce arbitrary code into the web interface. The vulnerability is due to insufficient validation of user input before it is used as an HTTP header value. An attacker could exploit this vulnerability by persuading a user to access a crafted URL. A successful exploit could allow the attacker to execute arbitrary HTML or script in a targeted user's browser. Cisco has confirmed the vulnerability; however, software updates are not available. To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the link.
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
| Version | Description | Section | Status | Date |
| 1.0 | Initial Release | NA | Final | 2015-Jun-19 |
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