Oracle Java ShortComponentRaster.verify() Memory Corruption

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| Packet Storm Advisory 2013-0917-1                                            |
| http://packetstormsecurity.com/                                              |
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| Title: Oracle Java ShortComponentRaster.verify() Memory Corruption           |
+--------------------+---------------------------------------------------------+
| Release Date       | 2013/09/17                                              |
| Advisory Contact   | Packet Storm ([email protected])       |
| Researcher         | Name Withheld                                           |
+--------------------+---------------------------------------------------------+
| System Affected    | Oracle Java                                             |
| Versions Affected  | Prior to 7u25                                           |
| Vendor Patched     | 2013/06/18                                              |
| Classification     | 0-day                                                   |
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| OVERVIEW |
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The release of this advisory provides exploitation details in relation to a 
known patched vulnerability in Oracle Java.   These details were obtained 
through the Packet Storm Bug Bounty program and are being released to the 
community.

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| DETAILS |
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The ShortComponentRaster.verify() method in Oracle Java versions prior to 7u25 
is vulnerable to a memory corruption vulnerability that allows bypassing of
"dataOffsets[]" boundary checks when the "numDataElements" field is 0.  This 
vulnerability allows for remote code execution.  User interaction is required 
for this exploit in that the target must visit a malicious page or open a 
malicious file.

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| PROOF OF CONCEPT |
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The full exploit code that pops calc.exe is available here:

http://packetstormsecurity.com/files/123263/
http://www.exploit-db.com/sploits/28331.tgz

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| RELATED LINKS |
+---------------+

http://www.oracle.com/technetwork/java/javase/7u25-relnotes-1955741.html

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+----------------+
| SHAMELESS PLUG |
+----------------+

The Packet Storm Bug Bounty program gives researchers the ability to profit 
from their discoveries.  You can get paid thousands of dollars for one day 
and zero day exploits.  Get involved by contacting us at 
[email protected] or visit the bug bounty page at: 

http://packetstormsecurity.com/bugbounty/


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