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Monday, 15 March 2021 11:36

PoC for Microsoft Exchange Server re-appears on GitHub with comments Featured

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PoC for Microsoft Exchange Server re-appears on GitHub with comments Pixabay

The proof-of-concept code for the Microsoft Exchange Server vulnerabilities, that was posted on code repository GitHub and removed by the company, has now been re-posted by a number of people other than the original poster.

A security researcher, who has the Twitter handle Vess, [real name Dr Vesselin Vladimirov Bontchev] posted a screenshot of the message from one individual who re-posted the PoC, saying: "Lulz. The original ProxyLogon exploit is back on GitHub – uploaded not by the author but by several others, sometimes accompanied with a nice comment."

The code was originally published on GitHub on 10 March by a Vietnamese researcher Nguyen Jang, according to a report in The Record, a website owned by the CIA-backed threat intelligence firm Recorded Future.

But hours later, GitHub took down the code. iTWire asked the company why it did this, but has so far received no reply.

British security researcher Marcus Hutchins, the first to make mention of the PoC, said in a tweet that it did not work in its original state, but needed some tweaks.

Some other researchers were flabbergasted by the actions of GitHub. David Kennedy, the chief executive and founder of security firm TrustedSec, said in a tweet: "Wow, I am completely speechless here. Microsoft really did remove the PoC code from GitHub.

"This is huge, removing a security researchers code from GitHub against their own product and which has already been patched. This is not good."

The comment referred to by Vess was this: "Why does GitHub remove this exploit because it is against the acceptable use policy – but tons of other proof of concept exploits and frameworks are OK?

"Is it because GitHub is owned by Microsoft?

"Censoring exploits is bad for security, even if an individual exploit sometimes can put companies at risk which should have already fixed their systems. And GitHub puts up a bad precedence."

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Sam Varghese

Sam Varghese has been writing for iTWire since 2006, a year after the site came into existence. For nearly a decade thereafter, he wrote mostly about free and open source software, based on his own use of this genre of software. Since May 2016, he has been writing across many areas of technology. He has been a journalist for nearly 40 years in India (Indian Express and Deccan Herald), the UAE (Khaleej Times) and Australia (Daily Commercial News (now defunct) and The Age). His personal blog is titled Irregular Expression.

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