JUMPSEC LABS

The JUMPSEC Lab is a place where the the technical team get creative and showcase their latest security research, publications, interesting news and general thoughts!  We love what we do and are passionate about security, with some great upcoming projects planned, bookmark our site and stick around to see what we are working on.

PRINTNIGHTMARE NETWORK ANALYSIS

By Dray Agha The infosec community has been busy dissecting the PrintNightmare exploit. There are now variations of the exploit that can have various...

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Overcoming Issues Using Custom Python Scripts with Burp Suite Professional

Summary / TL:DR I recently encountered some issues when using Burp Suite Professional which led me to playing around with the Python Scripter extension. The extension allows running custom Python scripts on every request/response processed by Burp, including those generated by functionality such as Burp's active scanner. This has a number of potential use cases, but I found it particularly...

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Win a place @HackFu 2021 Community Edition!

Hello world!At JUMPSEC we’ve managed to get our hands on tickets to what is probably the greatest cyber security event in the calendar, HackFu!In order to be in with a chance of winning you simply need to complete the following challenge which you can download here (the download contains all the information needed to complete the challenge):...

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Detecting known DLL hijacking and named pipe token impersonation attacks with Sysmon

Recently we posted a bunch of advisories relating to Ivanti Unified Endpoint Manager, a couple of which are for vulnerabilities which can be used to achieve local privilege escalation. We will give a brief explanation of the vulnerabilities and an example of Sysmon configuration rules to log exploitation attempts, along with the rationale behind them so you can adapt them to your existing configuration if needed.

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Advisory CVE-2020-13773 – Ivanti Unified Endpoint Manager Reflected XSS

Software: Ivanti Endpoint ManagerAffected Versions: <= 2020.1.1Vendor page: www.ivanti.comCVE Reference: CVE-2020-13773Published: 13/11/2020CVSS 3.1 Score: 5.5 - AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:LAttack Vector: Remote, authenticatedCredits: Andrei Constantin Scutariu, Lenk Ratchakrit, Calvin Yau Summary Various web pages on Ivanti Unified Endpoint Manager web management console lack proper...

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Advisory CVE-2020-13774 – Ivanti Unified Endpoint Manager authenticated RCE via file upload

Improper validation on file upload functionality present in Ivanti Unified Endpoint Manager’s web management console permits an authenticated user to upload .aspx files and execute them on the MS IIS server’s context. The issue is caused by insufficient file extension validation and insecure file operations on the uploaded image, which upon failure will leave the temporarily created files in an accessible location on the server.

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GitHub Activity

@JumpsecLabs
JumpsecLabs pushed to main in JumpsecLabs/Guidance-Advice Jul 20, 2021
1 commit to main
@JumpsecLabs
JumpsecLabs pushed to master in JumpsecLabs/shad0w Jul 20, 2021
2 commits to master

 

Twitter

1 week ago
You can now use our tool to check if your machine has bad SAM read permissions set and whether it's vulnerable to privilege escalation and password theft #hivepermissions #VSS

https://t.co/vfLL96Gsp6
1 week ago
Awesome research from @jeffmcjunkin and
@wdormann with the #hivepermission bug! Big thank you for your work on this. https://t.co/t3WLkmo1Ch
Jeff McJunkin @jeffmcjunkin
Okay, with @wdormann 's help I narrowed down this #hivepermission bug.

Win10 1809 and above are vulnerable, whether fresh build or upgrade.

Win10 1803 and below are not vulnerable. Neither is Server.

So: trivial privesc on modern Windows clients.

cc @gentilkiwi @mpgn_x64 https://t.co/bpPxdPAADP
1 week ago
What do Red Teamers and magicians have in common? The art of misdirection.

Checkout Shd's thoughts on command-and-control obfuscation, and maybe pick up some tips on hiding your #C2 as well.

https://t.co/yuiqWfAtSD
3 weeks ago
Building on @SpecterOps @harmj0y & @tifkin_ secure against new offensive techniques. It was tough!
#OffensiveSecurity #CyberSecurity
Check out our work. thx to @Purp1eW0lf
https://t.co/GtNUhv4z7R
3 weeks ago
We've put out some guidance around securing AD environments from certificate abuse.

https://t.co/GtNUhv4z7R

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