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Black Hat Ethical Hacking
PoC Exploit Circulating for Critical Windows Print Spooler Bug

https://www.blackhatethicalhacking.com/wp-content/uploads/2017/11/black-hat-locks-and-electronics.jpg PoC Exploit Circulating for Critical Windows Print Spooler BugPost Views: 49
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A proof-of-concept for a critical Windows security vulnerability that allows remote code execution (RCE) was dropped on GitHub on Tuesday – and while it was taken back down within a few hours, the code was copied and is still out there circulating on the platform.
The “PrintNightmare” bug may not be fully patched, some experts are warning, leaving the door open for widespread remote code-execution attacks.

The bug (CVE-2021-1675) exists in the Windows Print Spooler and has been dubbed “PrintNightmare” by researchers. It was originally addressed in June’s Patch Tuesday updates from Microsoft as a minor elevation-of-privilege vulnerability, but the listing was updated last week after researchers from Tencent and NSFOCUS TIANJI Lab figured out it could be used for RCE.

“There are 40 entries in Microsoft’s list of affected products, from Windows 7 to Windows 10 and from Server 2008 to Server 2019,” Dirk Schrader, global vice president of security research at New Net Technologies (NNT), now part of Netwrix, told Threatpost. “Given this broad surface, it is likely that this vulnerability will become an element in the tool chain of current malware families.”

On Sunday, the QiAnXin security team tweeted a video showing successful RCE – but it held back any technical or PoC details. Two days later, though, a full-blown PoC with a complete technical analysis appeared on GitHub, authored by another security firm, Sangfor.
See Also: Data for 700M LinkedIn Users Posted for Sale in Cyber-Underground Claire Tills, senior security engineer with Tenable, which spotted the PoC posting, noted that “the GitHub repository was publicly available long enough for others to clone it. The PoC is likely still circulating and is likely to resurface publicly, if it hasn’t already done so.”

And indeed, according to one security practitioner, the code was successfully forked to another page.
Looks like the original PoC for PrintNightmare (CVE-2021-1675) got deleted but someone has forked it since https://t.co/8MiP62SlzC

— Andy Gill (@ZephrFish) June 29, 2021
See Also: Offensive Security Tool: Pixload
On Wednesday, other researchers tweeted videos and more analysis that could be used for successful exploitation as word spread of the PoC.
Impacket implementation of CVE-2021-1675 https://s.w.org/images/core/emoji/13.0.1/72x72/1f525.png https://t.co/UpKOueij4c

— Cube0x0 (@cube0x0) June 29, 2021 See Also: Hacking Stories: Andrian Lamo – The ‘homeless’ Hacker It should be noted that some sources are also saying that the existing Microsoft patch doesn’t remedy the RCE version. Cube0x0’a impacket implementation above for instance works on a fully patched Windows machine, the authors said.

“We’re still evaluating the efficacy of the patch ourselves, but there are multiple reports indicating the proof-of-concept code works against fully patched systems,” Dustin Childs, of Trend Micro’s Zero Day Initiative, told Threatpost. “This does indicate the patch released in June does not completely address the root cause of the bug. Either way, enterprises should treat this as an incomplete fix and implement other workarounds, such as disabling the print spooler and blocking TCP ports 135 and 445 at the perimeter.”

He made note of Microsoft’s CVE nomenclature too: “It’s curious that the CVE here is -1675 while most of the CVEs Microsoft patched in June are -31000 and higher. This could be an indicato[...]

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Black Hat Ethical Hacking
PoC Exploit Circulating for Critical Windows Print Spooler Bug

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Motivation to learn Cybersecurity

Hi,i am Tejas 14 year old moreover cybersec enthusiast.If you need a mentor or guidence feel free to contact me on twitter.Continue reading on Medium »
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Deep Web
can discord report crimes to the police?

if an account gets banned for breaking discords TOS can they take this to the police if it was also a crime ?

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can discord report crimes to the police?

if an account gets banned for breaking discords TOS can they take this to the police if it was also a crime ?

19 views08:37

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hacking: security in practice
App Isolation

Is it possible to take an app like Tik Tok and isolate it so that it cannot collect any user or device information, while still being able to functionally use the app?

I know using it on a separate device would achieve the same result but I wondered if this way were possible.

submitted by /u/DemonNecron
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App Isolation

Is it possible to take an app like Tik Tok and isolate it so that it cannot collect any user or device information, while still being able to...

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