Advisory Details

April 5th, 2010

Sun Java Runtime Environment JPEGImageEncoderImpl Remote Code Execution Vulnerability

ZDI-10-059
ZDI-CAN-642

CVE ID CVE-2010-0846
CVSS SCORE 10.0, (AV:N/AC:L/Au:N/C:C/I:C/A:C)
AFFECTED VENDORS Sun Microsystems
AFFECTED PRODUCTS Java Runtime
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 9650. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Sun's Java Runtime Environment. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.

The specific flaw exists within a function responsible for creating a JPEG image encoder. The function makes an invalid assignment based on the value of the num_components element of a comp_info structure while parsing a JPEG file. It then improperly uses the original value while performing memory copy operations. By specifying certain values as the num_components field this can be exploited to gain arbitrary code execution by overflowing an undersized buffer on the heap.

ADDITIONAL DETAILS Sun Microsystems has issued an update to correct this vulnerability. More details can be found at:
http://www.oracle.com/technology/deploy/security/critical-patch-updates/javacpumar2010.html
DISCLOSURE TIMELINE
  • 2010-01-06 - Vulnerability reported to vendor
  • 2010-04-05 - Coordinated public release of advisory
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