Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Perimeter

7/16/2007
08:38 AM
Connect Directly
Twitter
RSS
E-Mail
50%
50%

Black Hat: DLP Hack

Researchers will show how some data leakage prevention products are buggy - and even risky

Careful -- your data leak prevention tools may be, well, leaky.

A pair of researchers has discovered multiple types of flaws in various vendors' DLP products that would let an attacker evade them, alter their records of stolen data, and even use them to bot-infect client machines.

At the heart of the problem is the way some DLP products are being designed, the researchers say. Their underlying approach, a sort of honor system, is problematic: "It's like handing a bracelet to all the suspects and saying, 'don't do anything wrong, or we'll catch you,'" says Eric Mondi, a security researcher with Matasano Security who led the firm's research on DLP products, which will be presented at Black Hat USA next month in Las Vegas.

"By the time you've detected your most sensitive information was leaked, the ultimate value of the DLP product is [gone]" and the attacker has copied a dossier of data on your firm's Social Security numbers, says Thomas Ptacek, co-founder and researcher with Matasano Security. "Forget about calling the security team in: It's over. You need to call PR and try to mitigate" the publicity fallout, he says.

Matasano won't name names, but several of the DLP vendors the firm alerted about the bugs -- which include buffer overflows and SQL injection -- are already working on fixes. Even so, enterprises need to know that these tools can backfire if they're not secured or audited, the researchers say.

"DLP is a top line-item for IT," Ptacek says. "A vulnerability in the piece of software that controls hundreds or thousands of machines is a catastrophe... if an attacker can find that vulnerability and take control of it. If it’s not extremely well-audited, there [will be] latent botnet infections on your network."

Some DLP products are especially leaky. The communication between agent and server was weak in many DLP products the researchers tested. "It was mainly ad hoc and weak encryption," notes Ptacek. "This data is the crown jewels of the enterprise, and the communication between agent and server has to be [better] protected."

And with Windows machines, DLP products must embed code into the kernel, which of course opens another can of worms. "The [more] stuff that's loaded into the kernel, the harder it [the DLP product] is to evade," Ptacek says. "But it also exposes more vulnerabilities to the kernel itself."

Monti says he and Ptacek will demonstrate at Black Hat a fictional DLP product that basically combines typical DLP features (in addition to the common bugs) to illustrate the risks of these tools. The goal of the researchers is to make organizations aware of these vulnerabilities in DLP products, and to know how to spot them.

"One of the things we advocate is that they do their homework on all regulatory compliance criteria," Monti says. "If they are using DLP products that don't comply to that level... they are actually failing compliance, because they are using this security product," Monti notes.

Cory Scott, vice president of global research, guidance, and consulting at ABN-AMRO, says security tools shouldn't introduce any risk to the enterprise. "The technology is only as good as the implementation," says Scott, who was speaking independently, not on behalf of ABN-AMRO. "In the cases of the vendors that Tom and company looked at, it appears as if the development and design practices were lacking. Think of the Hippocratic oath: You don't want the cure to be worse than the disease."

Still, although these products won't stop a determined attacker, Scott says, if you properly vet and audit them, you're practicing due diligence in protecting your data as well as that of your customers.

— Kelly Jackson Higgins, Senior Editor, Dark Reading

  • Black Hat Inc.
  • Matasano Security LLC Kelly Jackson Higgins is the Executive Editor of Dark Reading. She is an award-winning veteran technology and business journalist with more than two decades of experience in reporting and editing for various publications, including Network Computing, Secure Enterprise ... View Full Bio

    Comment  | 
    Print  | 
    More Insights
  • Comments
    Newest First  |  Oldest First  |  Threaded View
    How to Better Secure Your Microsoft 365 Environment
    Kelly Sheridan, Staff Editor, Dark Reading,  1/25/2021
    Attackers Leave Stolen Credentials Searchable on Google
    Kelly Sheridan, Staff Editor, Dark Reading,  1/21/2021
    Register for Dark Reading Newsletters
    White Papers
    Video
    Cartoon Contest
    Current Issue
    2020: The Year in Security
    Download this Tech Digest for a look at the biggest security stories that - so far - have shaped a very strange and stressful year.
    Flash Poll
    Assessing Cybersecurity Risk in Today's Enterprises
    Assessing Cybersecurity Risk in Today's Enterprises
    COVID-19 has created a new IT paradigm in the enterprise -- and a new level of cybersecurity risk. This report offers a look at how enterprises are assessing and managing cyber-risk under the new normal.
    Twitter Feed
    Dark Reading - Bug Report
    Bug Report
    Enterprise Vulnerabilities
    From DHS/US-CERT's National Vulnerability Database
    CVE-2021-3331
    PUBLISHED: 2021-01-27
    WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings. (For example, this is exploitable in a default installation in which WinSCP is the handler for sftp:// URLs.)
    CVE-2021-3326
    PUBLISHED: 2021-01-27
    The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid input sequences in the ISO-2022-JP-3 encoding, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.
    CVE-2021-22641
    PUBLISHED: 2021-01-27
    A heap-based buffer overflow issue has been identified in the way the application processes project files, allowing an attacker to craft a special project file that may allow arbitrary code execution on the Tellus Lite V-Simulator and V-Server Lite (versions prior to 4.0.10.0).
    CVE-2021-22653
    PUBLISHED: 2021-01-27
    Multiple out-of-bounds write issues have been identified in the way the application processes project files, allowing an attacker to craft a special project file that may allow arbitrary code execution on the Tellus Lite V-Simulator and V-Server Lite (versions prior to 4.0.10.0).
    CVE-2021-22655
    PUBLISHED: 2021-01-27
    Multiple out-of-bounds read issues have been identified in the way the application processes project files, allowing an attacker to craft a special project file that may allow arbitrary code execution on the Tellus Lite V-Simulator and V-Server Lite (versions prior to 4.0.10.0).