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.

Vulnerabilities / Threats

Researcher Barred From US

Renowned security expert Halvar Flake denied travel from Germany after his Black Hat presentation is found in search

Halvar Flake, a speaker at this week's Black Hat conference, has been denied entry into the United States following the discovery of his presentation in his travel materials.

Flake, a pseudonym for Thomas Dullien, CEO and head of research at Sabre Labs, was scheduled to give a two-day training course on analyzing security vulnerabilities. But according to his blog, authorities had other ideas. (See X-Ray Vision for Bug Finders and 10 Hot Security Startups.)

"For four and a half hours I was interviewed about who exactly I am, why I am coming to the U.S., what the nature of my contract with Black Hat is, and why my training class is not performed by an American citizen," Flake writes. "After four hours, it became clear that a decision had been reached that I was to be denied entry to the U.S., on the grounds that since I am a private person conducting the trainings for Blackhat, I was essentially a Black Hat employee and would require an H1B visa to perform two days of trainings in the U.S."

Flake says he chose to present as a private individual instead of as an employee of his company because he had signed the deal with Black Hat years ago, before his company was formed, "and never got around to changing it." But customs officials said he cannot work for Black Hat without the proper visa. Flake says he has done many training courses in the U.S. before and has never been stopped by immigration.

Dullien was forced to return to Germany, where he plans to apply for a U.S. business visa.

"I need to wait until the American consulate opens, and then apply for a business visa. I have not been able to determine how long this might take -- estimates from customs officials ranged from 'four days' to 'more than six weeks,' " he writes.

— Tim Wilson, Site Editor, Dark Reading

  • Sabre Security GmbH

    Tim Wilson is Editor in Chief and co-founder of Dark Reading.com, UBM Tech's online community for information security professionals. He is responsible for managing the site, assigning and editing content, and writing breaking news stories. Wilson has been recognized as one ... View Full Bio

    Comment  | 
    Print  | 
    More Insights
  • Comments
    Newest First  |  Oldest First  |  Threaded View
    Sodinokibi Ransomware: Where Attackers' Money Goes
    Kelly Sheridan, Staff Editor, Dark Reading,  10/15/2019
    Data Privacy Protections for the Most Vulnerable -- Children
    Dimitri Sirota, Founder & CEO of BigID,  10/17/2019
    State of SMB Insecurity by the Numbers
    Ericka Chickowski, Contributing Writer,  10/17/2019
    Register for Dark Reading Newsletters
    White Papers
    Video
    Cartoon
    Current Issue
    7 Threats & Disruptive Forces Changing the Face of Cybersecurity
    This Dark Reading Tech Digest gives an in-depth look at the biggest emerging threats and disruptive forces that are changing the face of cybersecurity today.
    Flash Poll
    2019 Online Malware and Threats
    2019 Online Malware and Threats
    As cyberattacks become more frequent and more sophisticated, enterprise security teams are under unprecedented pressure to respond. Is your organization ready?
    Twitter Feed
    Dark Reading - Bug Report
    Bug Report
    Enterprise Vulnerabilities
    From DHS/US-CERT's National Vulnerability Database
    CVE-2019-16404
    PUBLISHED: 2019-10-21
    Authenticated SQL Injection in interface/forms/eye_mag/js/eye_base.php in OpenEMR through 5.0.2 allows a user to extract arbitrary data from the openemr database via a non-parameterized INSERT INTO statement, as demonstrated by the providerID parameter.
    CVE-2019-17400
    PUBLISHED: 2019-10-21
    The unoconv package before 0.9 mishandles untrusted pathnames, leading to SSRF and local file inclusion.
    CVE-2019-17498
    PUBLISHED: 2019-10-21
    In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a ...
    CVE-2019-16969
    PUBLISHED: 2019-10-21
    In FusionPBX up to 4.5.7, the file app\fifo_list\fifo_interactive.php uses an unsanitized "c" variable coming from the URL, which is reflected in HTML, leading to XSS.
    CVE-2019-16974
    PUBLISHED: 2019-10-21
    In FusionPBX up to 4.5.7, the file app\contacts\contact_times.php uses an unsanitized "id" variable coming from the URL, which is reflected in HTML, leading to XSS.