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Packet Storm Advisory 2013-0819-1 - Oracle Java BytePackedRaster.verify()

Packet Storm Advisory 2013-0819-1 - Oracle Java BytePackedRaster.verify()
Posted Aug 19, 2013
Site packetstormsecurity.com

The BytePackedRaster.verify() method in Oracle Java versions prior to 7u25 is vulnerable to a signed integer overflow that allows bypassing of "dataBitOffset" boundary checks. 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. This finding was purchased through the Packet Storm Bug Bounty program.

tags | advisory, java, remote, overflow, code execution, bug bounty, packet storm
systems | linux, windows, 2k, 9x, 32, apple, xp, 7
MD5 | d3b7d95ba0be7fa25a186fccfcc35995

Packet Storm Advisory 2013-0819-1 - Oracle Java BytePackedRaster.verify()

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

+------------------------------------------------------------------------------+
| Packet Storm Advisory 2013-0819-1 |
| http://packetstormsecurity.com/ |
+------------------------------------------------------------------------------+
| Title: Oracle Java BytePackedRaster.verify() Signed Integer Overflow |
+--------------------+---------------------------------------------------------+
| Release Date | 2013/08/19 |
| Advisory Contact | Packet Storm (advisories@packetstormsecurity.com) |
| Researcher | Name Withheld |
+--------------------+---------------------------------------------------------+
| System Affected | Oracle Java |
| Versions Affected | Prior to 7u25 |
| Vendor Patched | 2013/06/18 |
| Classification | 0-day |
+--------------------+---------------------------------------------------------+

+----------+
| OVERVIEW |
+----------+

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.

+------------------------------------------------------------------------------+

+---------+
| DETAILS |
+---------+

The BytePackedRaster.verify() method in Oracle Java versions prior to 7u25
is vulnerable to a signed integer overflow that allows bypassing of
"dataBitOffset" boundary checks. 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.

+------------------------------------------------------------------------------+

+------------------+
| PROOF OF CONCEPT |
+------------------+

The full exploit code that pops calc.exe is available here:
http://packetstormsecurity.com/files/122865/

+------------------------------------------------------------------------------+

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

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

+------------------------------------------------------------------------------+


+----------------+
| 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
getpaid@packetstormsecurity.com or visit the bug bounty page at:

http://packetstormsecurity.com/bugbounty/




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