Citrix Presentation Server up to 9.200 WFICA.OCX SendChannelData heap-based overflow
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.8 | $0-$5k | 0.00 |
A vulnerability, which was classified as critical, has been found in Citrix Presentation Server up to 9.200 (Connectivity Software). Affected by this issue is the function SendChannelData
of the file WFICA.OCX. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. CVE summarizes:
Heap-based buffer overflow in the SendChannelData function in wfica.ocx in Citrix Presentation Server Client before 9.230 for Windows allows remote malicious web sites to execute arbitrary code via a DataSize parameter that is less than the length of the Data buffer.
The bug was discovered 12/04/2006. The weakness was published 12/06/2006 by Andrew Christensen (TippingPoint) with FortConsult (Website). The advisory is shared for download at fortconsult.net. This vulnerability is handled as CVE-2006-6334 since 12/06/2006. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.
A public exploit has been developed by Elazar and been published 2 years after the advisory. The exploit is available at fortconsult.net. It is declared as functional. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $25k-$100k.
Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at support.citrix.com. The best possible mitigation is suggested to be upgrading to the latest version.
The vulnerability is also documented in the databases at X-Force (30740) and Exploit-DB (5106). computec.ch is providing further details. Similar entry is available at 2550.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 7.3VulDB Meta Temp Score: 6.8
VulDB Base Score: 7.3
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
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Exploiting
Class: Heap-based overflowCWE: CWE-122 / CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Functional
Author: Elazar
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Patch: support.citrix.com
Suricata ID: 2007851
Suricata Class: 🔍
Suricata Message: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍
SourceFire IPS: 🔍
ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍
Timeline
12/04/2006 🔍12/04/2006 🔍
12/06/2006 🔍
12/06/2006 🔍
12/06/2006 🔍
12/06/2006 🔍
12/06/2006 🔍
12/07/2006 🔍
12/11/2006 🔍
02/12/2008 🔍
02/12/2008 🔍
09/15/2008 🔍
08/16/2019 🔍
Sources
Vendor: citrix.comAdvisory: fortconsult.net
Researcher: Andrew Christensen (TippingPoint)
Organization: FortConsult
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2006-6334 (🔍)
X-Force: 30740 - Citrix Presentation Server ICA Client ActiveX buffer overflow, High Risk
SecurityTracker: 1017343
Vulnerability Center: 19454 - Citrix Presentation Server Client < 9.230 Heap-Based Buffer Overflow Allows Remote Code Execution, Medium
SecurityFocus: 21458 - Citrix Presentation Server Client WFICA.OCX ActiveX Component Heap Buffer Overflow Vulnerability
Secunia: 23246 - Citrix ICA Client ActiveX Control Buffer Overflow Vulnerability, Highly Critical
OSVDB: 31789 - Citrix Presentation Server Client wfica.ocx ActiveX SendChannelData Function Overflow
Vupen: ADV-2006-4865
scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍
Entry
Created: 12/11/2006 09:47Updated: 08/16/2019 20:25
Changes: 12/11/2006 09:47 (107), 08/16/2019 20:25 (1)
Complete: 🔍
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