ZDI-08-010: Java Web Start encoding Stack Buffer Overflow Mar 12 2008 05:24PM
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ZDI-08-010: Java Web Start encoding Stack Buffer Overflow


March 12, 2008

-- CVE ID:


-- Affected Vendors:

Sun Microsystems

-- Affected Products:

Sun Microsystems Java Runtime

-- TippingPoint(TM) IPS Customer Protection:

TippingPoint IPS customers have been protected against this

vulnerability by Digital Vaccine protection filter ID 5633.

For further product information on the TippingPoint IPS, visit:


-- Vulnerability Details:

This vulnerability allows remote attackers to execute arbitrary code on

vulnerable installations of Sun Java Web Start. User interaction is

required to exploit this vulnerability in that the target must visit a

malicious page.

The specific flaw exists in the useEncodingDecl() function used while

parsing the xml header character encoding attribute. When a user

downloads a malicious JNLP file, the charset value is read into a static

buffer. If an overly charset name in the xml header is included, a stack

based buffer overflow occurs, resulting in an exploitable condition.

-- Vendor Response:

Sun Microsystems has issued an update to correct this vulnerability. More

details can be found at:


-- Disclosure Timeline:

2007-09-14 - Vulnerability reported to vendor

2008-03-12 - Coordinated public release of advisory

-- Credit:

This vulnerability was discovered by:

* Anonymous

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