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'Tens of Thousands' of SharePoint Servers at Risk. Microsoft Issues No Patch (msn.com) 65

"Anybody who's got a hosted SharePoint server has got a problem," the senior VP of cybersecurity firm CrowdStrike told the Washington Post. "It's a significant vulnerability."

And it's led to a new "global attack on government agencies and businesses" in the last few days, according to the article, "breaching U.S. federal and state agencies, universities, energy companies and an Asian telecommunications company, according to state officials and private researchers..."

"Tens of thousands of such servers are at risk, experts said, and Microsoft has issued no patch for the flaw, leaving victims around the world scrambling to respond." (Microsoft says they are "working on" security updates "for supported versions of SharePoint 2019 and SharePoint 2016," offering various mitigation suggestions, and CISA has released their own recommendations.)

From the Washington Post's article Sunday: Microsoft has suggested that users make modifications to SharePoint server programs or simply unplug them from the internet to stanch the breach. Microsoft issued an alert to customers but declined to comment further... "We are seeing attempts to exploit thousands of SharePoint servers globally before a patch is available," said Pete Renals, a senior manager with Palo Alto Networks' Unit 42. "We have identified dozens of compromised organizations spanning both commercial and government sectors.''

With access to these servers, which often connect to Outlook email, Teams and other core services, a breach can lead to theft of sensitive data as well as password harvesting, Netherlands-based research company Eye Security noted. What's also alarming, researchers said, is that the hackers have gained access to keys that may allow them to regain entry even after a system is patched. "So pushing out a patch on Monday or Tuesday doesn't help anybody who's been compromised in the past 72 hours," said one researcher, who spoke on the condition of anonymity because a federal investigation is ongoing.

The breaches occurred after Microsoft fixed a security flaw this month. The attackers realized they could use a similar vulnerability, according to the Department of Homeland Security's Cybersecurity and Infrastructure Security Agency. CISA spokeswoman Marci McCarthy said the agency was alerted to the issue Friday by a cyber research firm and immediately contacted Microsoft... The nonprofit Center for Internet Security, which staffs an information-sharing group for state and local governments, notified about 100 organizations that they were vulnerable and potentially compromised, said Randy Rose, the organization's vice president. Those warned included public schools and universities. Others that were breached included a government agency in Spain, a local agency in Albuquerque and a university in Brazil, security researchers said.

But there's many more breaches, according to the article:
  • "Eye Security said it has tracked more than 50 breaches, including at an energy company in a large state and several European government agencies."
  • "At least two U.S. federal agencies have seen their servers breached, according to researchers."
  • "One state official in the eastern U.S. said the attackers had 'hijacked' a repository of documents provided to the public to help residents understand how their government works. The agency involved can no longer access the material..."

"It was not immediately clear who is behind the hacking of global reach or what its ultimate goal is. One private research company found the hackers targeting servers in China..."


'Tens of Thousands' of SharePoint Servers at Risk. Microsoft Issues No Patch

Comments Filter:
  • Just stop (Score:5, Insightful)

    by PPH ( 736903 ) on Sunday July 20, 2025 @08:00PM (#65533586)

    Stop using toy operating systems for doing corporate work. If someone wants to put up a personal blog or a cute kittens website, I suppose this stuff will do. Other than that, don't.

    • I did a fresh install of win 11 today. It just "felt different". In the past I could change the hard drive partition, I felt like I was in control, yet... now MS is in control. It made me open a cloud account. I won't touch it. I will check this week if a Linux installation will let me have control of a hard drive partition, I want that. I have installed hundreds, maybe thousands of OS's in my life, and the experience of MS Win 11 felt ... like I was helpless. I had to give it information,
      • Re:Just stop (Score:4, Insightful)

        by johnnys ( 592333 ) on Sunday July 20, 2025 @08:37PM (#65533658)
        You are not the customer: You are the product. Your information belongs to Microsoft. Your computer belongs to Microsoft. If they could get your soul, they would.
        • I think about 10 years ago, there was a theory that people could own their own information, and even monetize it. I see from facebook that we do not own our information, that we just give it to Billionaires and Oligarchs. What is facebooks latest scheme? I think it is AR glasses, something that I do not want, and certainly do not need. It is certainly in the average persons power to simply put facebook out of business, we simply have to not use it for a few months. I never use it, and I encourage e
          • AI is the future. Ignore the previous failures. AI is the future.

            • AI is very interesting, almost as interesting as the invention of a microcomputer, in my humble opinion. I find it profoundly interesting and useful. There are about 8 Billion people now on the planet earth. How it will impact us all ... I am looking forward to watching it all unfold.
              • by DrYak ( 748999 )

                almost as interesting as the invention of a microcomputer

                lolwut?

                One is suddenly making available to the regular person at home a tool to do computations (despite a lot less complex and powerful) that was previously available only to universities, government and corporations,
                while the other is money extraction scheme designed to keep hopes of growth and confidence in stocks of a few big corporations who are in a race of "who is going to build the largest possible datacenter / boil lakes the fastest / and completely break the internet with AI slop?"

                To keep with you

        • EULA (Score:4, Insightful)

          by DrYak ( 748999 ) on Monday July 21, 2025 @07:54AM (#65534280) Homepage

          If they could get your soul, they would.

          You haven't been paying attention to the 143 pages of legalese in the EULA, have you?

          (In a time-line where Disney would try to lawyer out of a allergy death on the grounds of the arbitration clause of a trial subscription to a steaming service couple of years before, I am only half joking)

      • by gweihir ( 88907 )

        There are obscure options and files you can add to the installation image that give you choice back. I just tried to install Win11 pro over Win11 home (fresh install, wipe everything) and that only worked after I added some file to the install disk. Before the installer just checks the serial stored on that machine and gives you no choice. Really unprofessional.

        Win11 is much more difficult to figure out than Linux ever was. Fortunately, there is web-search. Unfortunately, I think I cannot quite do without W

        • Linux was never very difficult to figure out. For you maybe.

          • 0) to answer the predictable objections to searching out obscure options and install your next OS as you want, if you already know you want to partition your storage to your preference, you should have looked into this before you started installing.

            1) Ditto for wanting to install a second bootable OS. Or have the option later.

            2) Linux was never intended to be 'easy to use', merely rational and understandable. Until Systemd. Then the 'easy to use' turned into 'not a lot like Linux used to be'. Be careful wh

            • by gweihir ( 88907 )

              2) Linux was never intended to be 'easy to use', merely rational and understandable. Until Systemd. Then the 'easy to use' turned into 'not a lot like Linux used to be'. Be careful what you ask for.

              I do not run Systemd. So far I avoided 2 (!) rather serious security issues because of that and probably quite a few smaller issues. And all my installations run just fine.

          • by gweihir ( 88907 )

            You need to learn the difference between a relative and an absolute comparison. If you are smart enough to understand it.

        • by DrYak ( 748999 )

          Unfortunately, I think I cannot quite do without Windows at this time.

          There's always the option of going Linux for your main OS and using VirtualBox for the 1 or 2 small things that still require Windows.

          (Spoken from personal experience a decade ago or so. By now my universities' office 365 can run in Firefox (container) tabs, ProtonDB on my SteamDeck is stellar, I don't own any electronic gizmo that requires a Windows app to sync/updateetc.(*), and I don't care enough about anything else to dust off that VM)

          (*): By now electronic gizmos either have Wifi to update themselves

        • Unfortunately, I think I cannot quite do without Windows at this time.

          I have a corporate customer for whom I install Linux and VirtualBox on the bare metal, then install Windows in VirtualBox. It works great.

      • In the past I could change the hard drive partition

        You still can. The option isn't just presented in a big list of tools in the control panel. Ironically for your complaint Disk Management and the way it is done is one of the very few things that *hasn't* changed in over a decade. In fact a few years ago they made it easier since you can now open disk management by right clicking on the start button and clicking disk management (which is strange because I'm surprised Microsoft would elevate such a rarely used MMC snapin to such a prominent and easy to acces

    • The OS isn't the problem. The problem is all the CIOs who think that ChatGPT can replace all their SysAdmins.

      They're too busy renegotiating their parking space, or choosing a colour for their business cards to think about security or redundancy or risk management.

      The sales rep with the shiny new Beemer told them that everything would be fine, so they just signed a cheque and went back to the board with a glowing quarter report.

      Anyone who uses Sharepoint is getting exactly what they deserve. And the
    • by gweihir ( 88907 )

      Indeed. These fuckups are a fossil from the times that software did not have to be secure. And they never adapted and probably cannot adapt. Remember that security is, at this time, still their "highest priority", which means this crap is really the best they can do. And it does not cut it.

      Although quite a few people use a real OS and real server software for their personal stuff.

      • These fuckups are a fossil from the times that software did not have to be secure.

        When did that change?

        • by gweihir ( 88907 )

          When the Internet became widespread. Or before users hat accounts on regular computers, take your pick.

    • You shouldn't have Sharepoint on the open internet. It needs to be behind a VPN. The VPN should be the only exposed entrypoint on the internet.
    • Why? No serious, give me some numbers. Show me how the GDP or profits would change as a result of using a different system. That's all we care about. You arbitrarily label one thing a "toy" and I say "well our competitor who is making $10bn / month is using that toy so clearly it's not a toy".

      To be clear this isn't an argument for or against any system. It is an argument that you and other Linux proponents will never win simply by childishly slagging off the competition, especially since that competition is

      • Do go on playing with your toy for ever and ever, and one day they will bronze you and hang you up on the wall like baby shoes.

    • Do you really think this is an operating system problem (unless you want to call Azure an OS)? It is an application built upon the OS not the OS itself. SharePoint is the target because there are just so many users of it and they are putting high value data in it (along with a lot of junk... as the funny comment below said). Any other program that achieved that level of value would also be a target.

      This type of thing would happen even if it were Linux (or any other "non-toy" OS). There is always some bug in

  • by awwshit ( 6214476 ) on Sunday July 20, 2025 @08:03PM (#65533598)

    Microsoft cheese is like a cross between American cheese and Swiss cheese. Microsoft cheese is not too hard and full of holes, like swiss cheese, at the same time Microsoft cheese is mostly fake and tastes awful, like American cheese.

  • by 93 Escort Wagon ( 326346 ) on Sunday July 20, 2025 @08:26PM (#65533642)

    The product is called SharePoint, right? And what's happening is your files are being shared with everybody in the world. So what's with all the whining?

    It's right there in the name!

  • The root cause is the added AI stuff.
    • Me neither.

      However, would that type of information stored on Sharepoint servers not also be a data "goldmine" for AI dataset harvesters? So now you do not need to shield yourself from hackers and ransomware groups, but AI "harvesters" as well? Probably even more so, now that those can relentlessly attack and learn without stopping, under the guise of "but China...".

      Just as there was/is a need for software that severely limits the rate of login attempts, there is now also a need for similar software to block

    • Right now there are a bunch of Microsoft junior devs in the "vibe coding" department of the Sharepoint division arguing about what prompts they need to get the AI to fix the bug it introduced.

      Kid1: "See! With my prompt, it says it's fixed the bug, and produces tests to prove it"
      Kid2: "Yes, but the security researchers say the problem still exists"
      Kid1: "But... the AI says its fixed - we should ship this"

  • by Waffle Iron ( 339739 ) on Sunday July 20, 2025 @08:35PM (#65533654)

    The bad news: Hackers have gained access to thousands of SharePoint servers.

    The good news: It will be of no use to them, because just like the befuddled employees who are stuck using SharePoint, the hackers won't be able to find any relevant information in the byzantine hierarchy of pseudo folders packed with stale artifacts.

    • by Tablizer ( 95088 )

      Sharepoint is a piece of crap. Many groups in our org turned to email to "publish" internal info instead of use Sharepoint. Now our in-boxes are full of distracting crap. We had a self-rolled intranet CMS before Sharepoint, and it was fairly decent, but instead of improving it, they threw it out and replaced it with Sharepoint, which everybody hated.

  • by quonset ( 4839537 ) on Sunday July 20, 2025 @08:45PM (#65533672)

    Burn it down. At this point it's the only option against Microsoft.

    Considering how much these people are being overpaid and the number of bugs which appear on a near daily basis, at some point you have to tear it down and start fresh.

    • Microsoft doesn't overpay it's people. It only fires people nowadays.

      What Microsoft does do too much of, overestimating the quality of their CoPilot products.

    • by gweihir ( 88907 )

      This is also the only option because there are strong indicators they have piled up to much technological debt that their stuff cannot be fixed anymore. Or make any real progress.

  • If MS sells software and support to government agencies, they should be on the hook if or when their software creates critical vulnerabilities in infrastructure. Especially if they don't have a patch immediately!

    • by HiThere ( 15173 ) <charleshixsn @ e a r t h l i n k .net> on Sunday July 20, 2025 @10:25PM (#65533808)

      To be fair, it sounds as if they haven't figured out a decent patch. I mean when they're recommend that users make the systems safe by unplugging them, it doesn't sound like they've got a better idea.

      • Well, they can always recommend a new CPU and expanding the RAM. That used to work on Win95 so it should work now, right?
      • To be fair, it sounds as if they haven't figured out a decent patch. I mean when they're recommend that users make the systems safe by unplugging them, it doesn't sound like they've got a better idea.

        Or, perhaps they’ve suggested the most amazing incredible bulletproof patch fix to ever exist for Microsoft products! I mean, an unplugged Sharepoint server? Talk about secure!

        Why, I’d dare suggest the only thing safer would be if it were behind a closet door. With a lock, and a sign hanging that reads “Don’t Feed The Frameworks”.

        /s

  • by gweihir ( 88907 ) on Sunday July 20, 2025 @10:05PM (#65533778)

    Well, on this thing, probably, but after their last disaster they have to be counted as the dumbest fucks you can find in IT security.

  • by Rujiel ( 1632063 ) on Sunday July 20, 2025 @11:11PM (#65533844)
    Its original money-making OS is less than 10% of its revenue now, and is more useful as a package deal and a trojan horse for invasive telemetry. It doesn't want to focus on video games or selling streaming movies / TV, either, and now this. how would this company survive if not for its entitlement to all that government money, which arrives no matter how many times they mess up?
  • by Mirnotoriety ( 10462951 ) on Monday July 21, 2025 @06:16AM (#65534174)
    "Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network"
  • It is called "SharePoint" after all, not "SelfishPoint", right?

  • From Bleeping Computer -
    The KB5002754 update for Microsoft SharePoint Server 2019.
    The KB5002768 update for Microsoft SharePoint Subscription Edition.
    The update for Microsoft SharePoint Enterprise Server 2016 has not been released yet.
  • The vulnerability is related to this:
    https://www.zerodayinitiative.... [zerodayinitiative.com]

    "As you can see, the steps for parsing content at processing time are very similar to the parsing steps at verification time. However, there is a critical one-line difference:

    text4 = HttpUtility.HtmlDecode(text4);

    At processing time, attribute values are HTML-decoded by the parser, but there is no corresponding line at verification time. This means that if we have an ASPX tag with an attribute suc

  • On-prem has a critical flaw and MS wants everyone to rent time on their trash-tier, slow, overpriced cloud solutions so they're stuck there while they gradually jack prices. And shockingly enough, they haven't fixed it in a reasonable amount of time. I wonder if those two things are related.

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