Symantec VIP Access for Desktop can be susceptible to a DLL Pre-Loading vulnerability. These types of issues occur when an application looks to call a DLL for execution and an attacker provides a malicious DLL to use instead. Depending on how the application is configured, the application will generally follow a specific search path to locate the DLL. The exploitation of the vulnerability manifests as a simple file write (or potentially an over-write) which results in a foreign executable running under the context of the application.
This issue was validated by the product team engineers. A Symantec VIP Access for Windows Desktop update, version 2.2.4, has been released which addresses the aforementioned vulnerability. Note that the latest Symantec VIP release and patches are available to customers through normal support channels. At this time, Symantec is not aware of any exploitations or adverse customer impact from this issue.
Symantec recommends the following measures to reduce risk of attack:
Restrict access to administrative or management systems to authorized privileged users.
Restrict remote access to trusted/authorized systems only.
Run under the principle of least privilege, where possible, to limit the impact of potential exploit.
Keep all operating systems and applications current with vendor patches.
Follow a multi-layered approach to security. At a minimum, run both firewall and anti-malware applications to provide multiple points of detection and protection to both inbound and outbound threats.
Deploy network and host-based intrusion detection systems to monitor network traffic for signs of anomalous or suspicious activity. This may aid in the detection of attacks or malicious activity related to the exploitation of latent vulnerabilities.
Kushal Arvind Shah of Fortinet's FortiGuard Labs: email@example.com (CVE-2017-6329)
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