Cisco MARS contains a vulnerability that could allow an unauthenticated, remote attacker to access sensitive information. Updates are not available.
A vulnerability in the configuration of the XML parser of the Cisco Security Monitoring, Analysis and Response System (MARS) could allow an unauthenticated, remote attacker to have "read" access to part of information stored in the affected system.
The vulnerability is due to improper handling of XML External Entity (XXE) when parsing an XML file. An attacker could exploit this vulnerability by convincing the administrator of an affected system to import a crafted XML file. In order to succeed, the attacker would also need to own a server that have to be reachable from the Cisco MARS management IP address and that is used to retrieve the information sent from the affected system
Cisco has confirmed the vulnerability; however, software updates are not available.
At the time this alert was first published, Cisco MARS versions 6.0.4 and prior were vulnerable. Later versions of Cisco MARS may also be affected.
Successful exploitation requires an attacker to own a server reachable from a device running the affected software IP address that is used to retrieve information sent from the affected system. The attacker would likely need access to a trusted, internal network to achieve this objective. This access requirement decreases the likelihood of a successful exploit.
Customers are advised to review the bug report in the vendor announcements section for a current list of affected versions.
An unauthenticated, remote attacker could exploit this vulnerability to gain read access to some parts of information stored on an affected system. Successful exploitation could be used to conduct further attacks.
The vulnerability is due to improper handling of XXE when parsing a crafted XML file.
An unauthenticated, remote attacker could exploit this vulnerability by convincing the administrator of an affected system to import a crafted XML file. If successful, the attacker could access sensitive information that could be used to conduct further attacks.
Administrators are advised to contact the vendor regarding future updates and releases.
Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
Users are advised not to open unsolicited e-mail attachments. Users should verify that attachments are safe before opening them.
Administrators are advised to monitor affected systems.
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