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CVE-2008-5121

7.2 · HIGH

dne2000.sys in Citrix Deterministic Network Enhancer (DNE) 2.21.7.233 through 3.21.7.17464, as used in (1) Cisco VPN Client, (2) Blue Coat WinProxy, and (3) SafeNet SoftRemote and HighAssurance Rem…

Published Nov 18, 2008citrixCWE-264EPSS 1.12%

Overview

CVE-2008-5121 is a high-severity vulnerability affecting citrix deterministic_network_enhancer. It was published on November 18, 2008 and has a CVSS 2.0 base score of 7.2 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

dne2000.sys in Citrix Deterministic Network Enhancer (DNE) 2.21.7.233 through 3.21.7.17464, as used in (1) Cisco VPN Client, (2) Blue Coat WinProxy, and (3) SafeNet SoftRemote and HighAssurance Remote, allows local users to gain privileges via a crafted DNE_IOCTL DeviceIoControl request to the \\.\DNE device interface.

Remediation

Check the references section for vendor advisories and patches from citrix. Update deterministic_network_enhancer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refsecunia.com/advisories/30728Refsecunia.com/advisories/30744Refsecunia.com/advisories/30747Refsecunia.com/advisories/30753Refsecurityreason.com/securityalert/4600Refsupport.citrix.com/article/CTX117751Reftools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsm25860Refwww.digit-labs.org/files/exploits/dne2000-call.cRefwww.kb.cert.org/vuls/id/858993Refwww.securityfocus.com/bid/29772

How CyberStrike helps

Frequently asked questions

What is CVE-2008-5121?

CVE-2008-5121 is a high-severity vulnerability affecting citrix deterministic_network_enhancer. It was published on November 18, 2008 and has a CVSS 2.0 base score of 7.2 (HIGH).

How severe is CVE-2008-5121?

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2008-5121?

Check the references section for vendor advisories and patches from citrix. Update deterministic_network_enhancer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2008-5121?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2008-5121 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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