Rezultati pretraživanja
  1. 30. ruj 2019.

    Fun fact about : The known plaintext for the CBC gadget attacks results from the permission management (e.g. write protection) defined in the PDF standard. The encryption dictionary contains the permissions both in plain and in encrypted form. 1/2

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  2. 30. ruj 2019.

    Btw. You can test your PDF application of choice using the exploits we have uploaded (Password: pass):

  3. 30. ruj 2019.
  4. 30. ruj 2019.

    🔴 New vulnerability found in 100% (27/27 tested) of PDF readers, where an attacker can intercept and modify an encrypted PDF so it leaks its contents when opened. Full details and paper

  5. 30. ruj 2019.

    Anyone out there using PDF encryption? We found two major weaknesses in the standard which both lead to full plaintext exfiltration in an active-attacker scenario

  6. 26. pro 2019.

    On my way to , catch our talk about PDF security today at 16:10 in room Borg! will be talking about signatures and I will talk about encryption.

  7. 6. pro 2019.
  8. 30. ruj 2019.

    PDF encryption is broken in the same way as emails were broken I can tell you a "secret": For ZIP-files, Word DOCs, ODT files & probably almost every other password-encryption format that's older than 10 years the same or similar attacks apply.

  9. 2. lis 2019.
  10. 30. ruj 2019.

    Check out our new paper on PDF encryption.

  11. Looking for ways to unlock and read the content of a password-protected or encrypted PDF file without knowing the password? Well, that's now possible. Read Full Post On >> Follow For More >>

  12. 12. stu 2019.

    If you did not catch my talk on PDF encryption at today: I will also be presenting a longer version at in London with and a signature/encryption combination at in Leipzig with .

  13. 8. lis 2019.

    Google finds Android zero-day impacting Pixel, Samsung, Huawei, Xiaomi devices, Zendesk security breach may impact orgs like Uber, Slack, FCC, and more.. To read our newsletter:

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  14. 30. ruj 2019.

    As a result, 27/27 PDF viewers were vulnerable (14 without user interaction, 13 with user interaction). 7/n

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  15. With PDFs used in many cases for invoices, this potential new attack presents yet more danger for email invoice redirection.

  16. Popular PDF viewer (for Windows, Mac & Linux) have been found vulnerable to the new attacks, including: ➡️ Adobe Acrobat ➡️ Foxit ➡️ Okular ➡️ Nitro Reader and more ...as well as those come built-into web , and Safari browsers.

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  17. 30. ruj 2019.

    Thanks to for helping with the disclosure! 9/9

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  18. New PDFex attack can exfiltrate data from encrypted PDF files | ZDNet

  19. 30. ruj 2019.

    A new attack can extract and steal data from encrypted PDF files, sometimes even without user interaction. Read more at

  20. 30. ruj 2019.

    Main mitigations on PDF standard level are: a) remove partial encryption and b) define and enforce authenticated encryption. 8/n

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