Multiple Cisco devices contain a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site request forgery attacks. Updates are not available.
A vulnerability in the web framework could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack against the user of the web interface. The vulnerability is due to insufficient CSRF protections.
An attacker could exploit this vulnerability by convincing the user of the affected system to follow a malicious link or visit an attacker-controlled website. A successful exploit could allow the attacker to submit arbitrary requests to the affected device via the affected web browser with the privileges of the user.
Cisco has confirmed this vulnerability in a security notice; however, software updates are not available.
At the time this alert was first published, the following versions of Cisco products were vulnerable. Later versions of Cisco products may also be affected:
Cisco Web Security Appliance (WSA) 7.7 and prior
Cisco Email Security Appliance (ESA) 7.8 and prior
Cisco Content Security Management Appliance (SMA) 8.1 and prior
To exploit the vulnerability, the attacker may provide a link to a malicious site and may persuade the user to follow the link by using misleading language and instructions.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
Cisco has released a security notice at the following link: CVE-2013-3395
An unauthenticated, remote attacker could exploit this vulnerability to submit arbitrary requests to the affected device with the privileges of the user. Successful exploitation could allow an attacker to conduct further attacks.
The vulnerability is due to insufficient CSRF protections imposed by an affected device.
An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to visit a malicious website. If successful, the attacker could have the ability to submit arbitrary requests to the affected device with the privileges of a targeted user. Successful exploitation could be used to conduct further attacks.
Administrators are advised to contact the vendor regarding future updates and releases.
Users are advised not to open email messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in email messages are safe, they are advised not to open them.
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.