Nguyen The Duc

@ducnt_

Just another web warrior ⚔️ | Security Researcher | Sr. Security Engineer | CTF player && | Bug bounty hunter

Hồ Chí Minh, Việt Nam  
ducnt.net
Joined February 2017
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  1. Pinned Tweet
    Jan 8

    My first `double kill` at : Kudos to WordPress security team with very quickly and awesome work 🥰

    1 reply . 14 likes
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  2. 1 hour ago

    I really happy to share an article that bypass Akamai web application firewall and exploit a SQL Injection vulnerability. Hope this article will help someone in the same situation :).

    2 retweets 6 likes
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  3. Retweeted
    Mar 30

    昼に「WindowsのSMBの脆弱性の実用的な検証コードがもうすぐ公開されるかも」みたいなことを投稿しましたが、つい先ほど公開されました。まだセキュリティ更新プログラムを適用していない人は、速やかに適用しましょう。

    109 retweets 156 likes
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  4. Retweeted
    Mar 29

    My last article: Bypass Content-Security-Policy by hiding JavaScript in a PNG image.

    9 replies . 82 retweets 214 likes
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  5. Retweeted
    Mar 29

    Did you know that / CVE-2020-0796 can be used for a Local Privilege Escalation? We'll post the details + POC in the next few days and in the meantime:

    5 replies . 336 retweets 692 likes
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  6. Retweeted
    Feb 28

    it took me two days to finish the analysis of cve-2020-6418, amazing vuln, learned a lot from this bug. thanks to here is the github repo: and here is the writeup:

    4 replies . 128 retweets 321 likes
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  7. Retweeted
    Mar 20

    Had fun today writing a .NET exploit for 's CVE-2020-0787 BITS LPE and UsoLoader technique. Check out his blog posts and research if you haven't already. They are all brilliant 👏🙏

    3 replies . 85 retweets 187 likes
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  8. Retweeted
    Mar 19

    Confirmed! combined an info leak & an uninitialized variable in to pop calc on the host OS. He earned himself $40,000 and 4 points towards Master of Pwn.

    29 retweets 96 likes
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  9. Retweeted
    Mar 18

    "XXE-scape through the front door: circumventing the firewall with HTTP request smuggling" - read my write-up about a pretty cool way in which I bypassed a firewall stopping me from exploiting an XXE vulnerability.

    18 replies . 250 retweets 504 likes
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  10. Retweeted
    Mar 18

    New blog post by on bypassing .NET ETW for red teams

    2 replies . 91 retweets 167 likes
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  11. Retweeted
    Mar 16

    The December update to HTTP Request Smuggler added a new desync technique by - he's just blogged the full details here:

    2 replies . 130 retweets 344 likes
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  12. Retweeted
    Mar 16

    "CVE-2020-0796 Pre-Auth POC" Tl;Dr: Only DoS by BSOD so far. No RCE proof-of-concept out yet.

    3 retweets 7 likes
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  13. Retweeted
    Mar 11
    Replying to

    we really out here and aren't lackin

    4 replies . 10 retweets 141 likes
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  14. Retweeted
    Mar 9

    I have something fun for you, I pulled the javascript interpreter out of Avast and ported it to Linux 😆 This runs unsandboxed as SYSTEM, any vulns are wormable pre-auth RCE on 400M endpoints  ¯\_(ツ)_/¯ 🐧

    83 replies . 1,217 retweets 3,207 likes
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  15. Retweeted
    Mar 4

    Interesting new vulnerability in pppd, nice find Ilja Van Sprundel of Fix:

    2 retweets 1 like
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  16. Retweeted
    Mar 2

    This blog post should be useful for those who also know how SharePoint works: - I've shown how code injection can aid to bypass some misconfigs in .NET + some thoughts for actual bypasses if you've research time!

    I have had this question of why we cannot get a shell when we can create files in our directory. I thought it is a well-known thing, but do you know why? (I like to see if it can be a blog worthy topic in 2020) 🍻
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    1 reply . 46 retweets 84 likes
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  17. Feb 27

    Filed a duplicate with gr8 bug was found by but can reopen it with a triaged issue. Really a excited moment.

    1 reply . 1 retweet 10 likes
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  18. Retweeted
    Feb 25

    New blog post! Here is how you can use MSBuild’s UnregisterAssembly task to execute arbitrary code in a .NET assembly. ⤵️

    1 reply . 115 retweets 213 likes
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  19. Retweeted
    Feb 21

    Just wrote a new article about how I found a Remote Command Execution 0-day (CVE-2020-8813) via static analysis in Cacti v1.2.8 the popular infrastructure graphing solution. I also explained how to exploit it without authentication in some cases.

    14 replies . 239 retweets 614 likes
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  20. Retweeted
    Feb 18

    Slides from my talk on iMessage exploitation: More technical details in the blog post: Great conference again, thanks team! :)

    2 replies . 114 retweets 313 likes
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  21. Retweeted
    Feb 17

    [PoC] CVE-2020-0618 Microsoft SQL Server Reporting Services RCE Vulnerability POST /ReportServer/pages/ReportViewer.aspx HTTP/1.1 Host: target ... ... NavigationCorrector$PageState=NeedsCorrection&NavigationCorrector$ViewState=[PayloadHere]&__VIEWSTATE=

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    4 replies . 186 retweets 349 likes
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