CNet's Ellinor Mills
wrote a nice security profile on me with the catching title: Google's Niels Provos battles malware on the Web
. Blacksmithing, security, martial arts, etc, it's all there.
The HotSec 2011 CFP is out:
- Submissions due: May 5, 2011, 11:59 p.m. EST
- Notification of acceptance: June 14, 2011
- Electronic files of final papers due: July 5, 2011
HotSec is renewing its focus by placing singular emphasis on new ideas and problems. Works reflecting incremental ideas or well understood problems will not be accepted. Cross-discipline papers identifying new security problems or exploring approaches not previously applied to security will be given special consideration. All submissions should propose new directions of research, advocate non-traditional approaches, report on noteworthy experience in an emerging area, or generate lively discussion around an important topic.
Recently, I had the pleasure of flying from the new terminal at the San Jose Airport
. The building is quite nice from the inside and even has some cool futuristic moving statues. With all the good stuff comes also a set of virtual nudity machines at the security screening point. The virtual nudity machines also known as backscatter x-ray screening
promise increased privacy since the naked images of passengers are viewed at a remote location and there is no requirement of a physical examination. As the sign states these machines are optional but whoever refuses must subject themselves to a thorough physical pat down. I already had one really bad experience with the virtual nudity machines at another airport - I was told I was not allowed to wear my watch or any necklaces. Well, this time I chose the metal detector and walked through without any further hassles. However, I had the pleasure of watching every single person who was shepherded through the virtual nudity machines being patted down. One woman had her breast touched - perhaps she dared to wear an underwire bra? The next guy got patted down around his legs. His offense was a chap stick hidden in his pocket. What really amused me was the guy after him who was patted down because he had not removed his handkerchief from his pocket. At the end of the day, anyone going through the backscatter x-ray machines got patted down and spent a significantly longer time at the security checkpoint. This seems like an overly expensive experiment that hopefully will be abandoned soon.
Metasploit has a great write up on new vulnerability in PDF
. The basic problem is a stack overflow when parsing OpenType fonts. In particular, SING Glyphlet tables
contain a 27 byte long unique name that is expected to be NUL-terminated and stored in a 28-byte buffer. The vulnerable code is using strcat
and lacks bounds checking resulting in a stack overflow.
tables did not fix up their respective checksums. According to Metasploit, this exploit works under Windows 7 with both DEP and ASLR turned on. Fun Fun. As of now, no patched version is available. The SecBrowsing blog
contains instructions with temporary remedies.
Nick announced the release of Libevent-2.0.7-rc today. Here is an excerpt from his email:
Thanks to everybody who reported and fixed bugs in Libevent 2.0.6-rc,
Libevent 2.0.7-rc should be much more stable and portable, especially
for people using IOCP, Windows, rate-limiting, or threads.
There are also numerous small bugfixes thoughout the codebase (though
still not, alas, in the http stuff).
For a complete list of changes, just see the ChangeLog included with
the source distribution.
You can download source code of libevent releases from monkey.org
PDF has become the de-facto standard for formatting print documents. Over the years, it has evolved into a feature rich and very complex system
In this blog post, we are going to look at current exploitation of CVE-2010-0188: An integer overflow in the parsing of the dot range option in TIFF files. The vulnerability was publicly announced in February 2010
. Examples of exploit code
are readily available on the Internet and a very good explanation of how the exploit works has been provided by Fortinet
The exploit described by Fortinet utilizes an AcroForm described in XML. The XML contains an image field with an embedded TIFF image that triggers the vulnerability.
Continue reading "Anatomy of a PDF Exploit"