Blue Coat · Bluecoat Winproxy · CVE-2008-5121
**Name of the Vulnerable Software and Affected Versions**
Citrix Deterministic Network Enhancer versions 2.21.7.233 through 3.21.7.17464
**Description**
The issue allows local users to gain privileges via a crafted `DNE IOCTL` `DeviceIoControl` request to the ".DNE" device interface. This affects products that use Citrix Deterministic Network Enhancer, including Cisco VPN Client, Blue Coat WinProxy, SafeNet SoftRemote, and HighAssurance Remote.
**Recommendations**
For Citrix Deterministic Network Enhancer versions 2.21.7.233 through 3.21.7.17464, consider restricting access to the `DNE IOCTL` `DeviceIoControl` request to minimize the risk of exploitation. As a temporary workaround, disabling the `DeviceIoControl` request to the ".DNE" device interface may help until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.