Written by Chris Evans, Security Team JDK . In May 2007, I released details on an interesting bug in the ICC profile parser in Sun's JDK. The bug is particularly interesting because it could be exploited by an evil image. Most previous JDK bugs involve a user having to run a whole evil applet. The key parts of code which demonstrate the bug are as follows:gunzip . In September 2006, my colleague Tavis Ormandy reported some interesting vulnerabilities in the gunzip decompressor. They were triggered when an evil compressed archive is decompressed. A lot of programs will automatically pass compressed data through gunzip, making it an interesting attack. The key parts of the code which demonstrate one of the bugs are as follows:libtiff . In August 2006, Tavis reported a range of security vulnerabilities in the libtiff image parsing library. A lot of image manipulation programs and services will be using libtiff if they handle TIFF format files. So, an evil TIFF file could compromise a lot of desktops or even servers. The key parts of the code which demonstrate one of the bugs are as follows:
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Can you comment on how these defects were detected - code review (manual or automated), fuzz testing, other?
David Thiel's paper and talk from Blackhat this year talked about specific file fuzzers for media formats and such and the major lesson for me is that building file-specific fuzzers like that that subtly tweak file formats is laborious.
I'd be interested to know how you detected these, and what your experience is in finding these types of defects via various methods.
I hate GMail. GMail is the Biggest Spammer of all. I have had nothing but trouble with Gmail and I intend to get rid of Gmail.
As someone said earlier; it would be great to know how Google works on auditing its projects. Possibly even releasing or demonstrating some tools.
Google has some of the best resources and talent; it could do great things for the Security Community.
On a side-note: Gmail is definitely the best mail service I've used. In regards to spam; I went from 40-50 spam mails a day to 0 after forwarding my mail through Gmail.
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Yash Kadakia
CTO, Security Brigade
http://www.securitybrigade.com
Penetration Testing, PCI DSS Compliance, Security Consulting etc.
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