Secunia Security Advisory - AbdulAziz Hariri has discovered a vulnerability in various Citrix products, which can be exploited by malicious people to cause a DoS (Denial of Service).
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TITLE:
Citrix Products ActiveSync Service Denial of Service Vulnerability
SECUNIA ADVISORY ID:
SA38748
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/38748/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=38748
RELEASE DATE:
2011-03-26
DISCUSS ADVISORY:
http://secunia.com/advisories/38748/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)
http://secunia.com/advisories/38748/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=38748
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http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
AbdulAziz Hariri has discovered a vulnerability in various Citrix
products, which can be exploited by malicious people to cause a DoS
(Denial of Service).
The vulnerability is caused due to an input validation error in the
processing of packets sent to the Citrix ActiveSync Service
(ctxactivesync.exe) and can be exploited to cause the service to
crash.
The vulnerability is reported in the following products (confirmed in
XenApp 5.0 ctxactivesync.exe 4.5.4200.1):
* Citrix XenApp 5
* Citrix Presentation Server 4.5
* Citrix Access Essentials 2.0
SOLUTION:
Apply hotfix (please see the vendor's advisory for details).
PROVIDED AND/OR DISCOVERED BY:
AbdulAziz Hariri via Secunia
ORIGINAL ADVISORY:
Citrix:
http://support.citrix.com/article/CTX128366
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
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