Showing posts from September, 2010

CSRF on the increase per two reports

As I've spent almost all of my research time this past year focusing on finding and disclosing (coordinated) CSRF vulnerabilities, it was with some amusement that I read CSRF Vulnerabilities Rise, Overall Vulnerability Disclosures Dip from Kelly Jackson Higgins last week.

Therein she states that "overall, the number of vulnerability disclosures for the year is gradually declining to around 4,500 from nearly 7,000 last year, with the exception of CSRF, which had 155 vulnerabilities as of the first half of the year." This article is ultimately referring to TippingPoint DV Lab's Top Risks report.
Wolfgang Kandek, CTO at Qualys, follows with "CSRF is difficult ... and complex."
I must respectfully disagree, it's really not, but I'll discuss that in a minute.

I was pleased to run into Jeremiah Grossman at the ISSA International Conference last week, and he stated that CSRF has moved up on the imminently pending 10th WhiteHat Security Statistics Report. He w…

Everybody Loves REMnux

A quick read of the SANS Forensics blog, courtesy of Gregory Pendergast, and you'll get a feel for all the positive feedback for Lenny Zeltser's REMnux.
Lenny has dedicated himself to furthering the malware reverse engineering cause, both as a teacher and analyst; his SANS courses are popular for good reason.

September's toolsmith covers REMnux and offers some detail specific to its use.

One area I often use REMnux for is malicious Flash analysis.
Evil Flash, distributed in particular via online advertising platforms, is a constant concern for online providers. Suffice it to say that my team has encountered such problem children more than once. ;-)
As an example, an older sample (MD5: 525445764564B34070CF2F9DCC6C2DAA) makes for a great test case. You can grab the sample for your own testing at
Imagine you've grabbed the sample via wget from your REMnux VM, after proxy-based analysis of the malicious URL.
A simple check for interesting results might be …