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Denial of Service Vulnerability Fix by steemitblog

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· @steemitblog ·
Denial of Service Vulnerability Fix
![Vulnerability Fix.png](https://cdn.steemitimages.com/DQmathdARXUyMG3hAz869iVocgyYjm65RuGcpBRB7SJ2a73/Vulnerability%20Fix.png) 

Hello Steemians, for the last couple of weeks we have been working on a fix to a Denial of Service vulnerability at the same time we are wrapping up our work on MIRA. 

<h1>The Vulnerability</h1>

The vulnerability involved the pending transaction queue. We've been working on, and testing, various solutions since we were informed of the vulnerability by @netuoso about 2 weeks ago. Due to the nature of the attack, we could not publicly disclose our work on this issue and we even limited knowledge of the vulnerability within the organization to minimize risk. 

<h1>Witnesses & Exchanges</h1>

Earlier today we upgraded our nodes and proposed our fix to the Witnesses all of whom have since upgraded. This fix has been tested on a private testnet on which we were able to demonstrate that it successfully mitigates the underlying issue. **All nodes including exchanges should be upgraded as soon as possible with this patch. We will be available for technical support for those exchanges that require it.**

This vulnerability was brought to our attention by the Steem community developer, @netuoso. This highlights how important Steem’s amazing developer community is to the protocol. Their continued inspection of the chain, and effective communication of their findings, is a critical component of maintaining a safe and secure network. Thanks again to @netuoso for discovering this vulnerability and helping us develop a patch that resolves the vulnerability.

_The Steemit Team_
πŸ‘  , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , and 354 others
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vote details (418)
@acidyo ·
$0.03
Great job @neutoso and to the Steemit team for fixing it!
πŸ‘  
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vote details (1)
@andrewsmodels ·
Bugger. I was hoping this had to do with ISPs blocking access to dtube.
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@apshamilton ·
$0.28
Amazing demonstration of how a decentralized system is better than a centralized one. FaceBook outages are becoming a monthly affair. 

Posted using [Partiko iOS](https://partiko.app/referral/apshamilton)
πŸ‘  , ,
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vote details (3)
@arifullah · (edited)
Thank you @netuouso.  Amazing demonstration of how a decentralized system is better than a centralized one. FaceBook outages are becoming a monthly affair.
πŸ‘  ,
πŸ‘Ž  
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vote details (3)
@ayogom · (edited)
$0.05
I'm a Backup witness, but I have not heard of this solution. Where can I get a mention?
πŸ‘  ,
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vote details (2)
@justinw ·
Check #witness in steem.chat

Is there another place that you are monitoring for witness related matters?
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@ayogom ·
I'm already involved in it, but I don't think the content was first disclosed there.
I checked the update through the alarm, but Top witnesses were already updated. Do they have a separate channel?
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@briandenver ·
Is that way I could not place an order to buy Steem at a set price?
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@dogfud ·
$0.06
Hi @steemitblog, thanks for sharing. Are you from the Steemit team? Your profile doesn’t say all that much about you. Looks like you follow just 5 people… @roboza @cgame @thecryptofiend @alkafir and @rmach. Those people must be your core team members? Good to know! Anywho, it might be a good idea to update your profile info so that people know more about who you are and what kind of blog you have. Let’s start with something simple. A profile pic!  

If you’d like to add a profile pic, click settings and upload a photo… Wait… the β€œsettings” tab can’t do that. First… you actually need to click the β€œwallet” tab. OK… then you’ll arrive at steemitwallet.com, it’s another website. Don’t worry though… it will all make sense soon. So you’ve arrived at steemitwallet.com to change your profile picture. OK… you’ll notice that you’re not logged in anymore. You need to log into your account a second time using one of those four passwords. Wait… actually, a login window will pop up and suggest that you use the posting key, but that’s actually not right… it’s the active key that does stuff for the wallet. Right? Not sure. From there, click the wallet settings button to upload an image for your profile. So simple! Now click update at the bottom. Great! It’ll take some time to show up but it does show up eventually. Now you want to back to your profile. To return to your profile page, click the tiny β€œblog” tab hiding in the corner. OK, now we are back in action! Congratulations @steemitblog, you now have a profile picture.
πŸ‘  ,
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vote details (2)
@ats-david ·
Yeah, but you’re probably still logged into your wallet since it hasn’t been auto-signing out when you close your browser. 

It’s possible that this has been fixed though. Maybe.
πŸ‘  , ,
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vote details (3)
@dogfud ·
Humrph, so many steps.
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@rmach ·
Hello, I'm not part of the team. Just a regular Steemian.
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@dogfud ·
`` Β―\_(ツ)_/Β―``
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@yonny ·
$0.09
Thanks! Lol this actually helped me with what I was looking for
πŸ‘  , ,
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vote details (3)
@glenalbrethsen ·
Hey, @steemitblog.

Thanks for the update. I appreciate the idea of keeping the potential vulnerability of a denial of service attack secret except for a select few, and that now that you have the patch employed, you've let us know about it. I am trying to follow these updates as frequently as they come out, and hope that others will too. So keep them coming. :)

I believe it was on the last blog talking about the splitting of condenser and the wallet that someone else and myself brought up some quirks in the steemitwallet. It does not stay logged in, even though the box to do is checked. In order to claim rewards, the page needs to be refreshed (which is the same), but then requires a new login every time. Is this going to be the case going forward, or is there a fix forthcoming? Or is it perhaps something I'm doing or not doing on my end. Since I've never had trouble before the separation being able to login once and stay that way for periods of time, I'm still wondering what's up.

Thanks for any attention anyone can give in this matter. :)
πŸ‘  ,
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vote details (2)
@andrarchy ·
$0.03
I believe this will be fixed, but it is much easier to discuss and address UX issues like this if a PR is submitted and shared. Then I can say whether the PR will be approved or not. Also it may well be the case that a PR has already been submitted, in which case we can skip the discussion and move straight to the meat, "Will this get merged." The goal is to fix all UX issues so that it is a seamless experience, so any poor UX should be resolved.
πŸ‘  
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vote details (1)
@glenalbrethsen ·
Hey, @andrarchy

I think I'm looking at the PR list on steemit/steem's github now. I don't see anything. The most recent thing has to do with the Steem Proposal System (worker proposals via blocktrades), and some median feed update from 29 days ago.

Can anyone submit a pull request? I wouldn't know where to begin. I'm sure there's more technical terms for "stay logged in check box when checked doesn't stay logged in." :) I'm willing to learn, though, I'd just need to be pointed in the direction of some tutorials or something.
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@goldmanmorgan ·
![XoUeNY8.gif](https://cdn.steemitimages.com/DQmSXv1vCMJUqpBeEtu987xT279aKSK43yBYxKeynyTKeFq/XoUeNY8.gif)
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@hiroyamagishi ·
Good job @netuoso! A person like you needs to be here
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@informatio ·
nice great work move on
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@jondoe · (edited)
What exactly does Ned and the rest of steemit,inc do all day? Is steemit.inc and steemit just a hobby for you guys? What does the new steemit director do? Why does everything move at a snail's pace? Serious question.
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vote details (9)
@kawaiicrush · (edited)
He is busy downvoting everyone as Bernie Sanders. They say the truth is often stranger than fiction. However the blockchain points to this based on stats. Makes sense why Dan Larimer left. Just a spoiled rich kid.. drunk on power.. spending Daddies money.  It's all a joke to him. Also demented in the head like a little kid that pulls the wings off of a bug for fun. Deranged. 

Your welcome.
πŸ‘  
πŸ‘Ž  ,
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@iflagtrash ·
$0.04
You have received a negative vote.
πŸ‘  
πŸ‘Ž  
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@jondoe ·
Where is the evidence for this?
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vote details (7)
@jrcornel ·
There appears to be a bug with the 100% power up comment option

Nor sure if you guys are aware:

https://steemit.com/steem/@jrcornel/bug-report
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vote details (11)
@mattockfs ·
This I feel ones more underlines the need for a bounty system for vulnerabilities. Kudus for @netuoso for identifying this bug while forgoing on what currently seems the only, rather meagre insentive of posting about the bug with appropriate @utopian-io tags.
πŸ‘  
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@moemanmoesly · (edited)
Ok that must explain why the reputation scores were all messed up for a while, good work Steemit team.
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@themarkymark ·
That was a different issue.
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vote details (7)
@mus ·
Dude, WHEN are you releasing SMT?
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@netuoso ·
$34.50
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vote details (62)
@always1success ·
Thank you! Now we can sleep well!
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@apostle-thomas ·
Outstanding!  That is the Steemian Singularity that make this blockchain so very special! GODSPEED!
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@steem-bet ·
&#127873; Dear @apostle-thomas,<br /><p>SteemBet Seed round SPT sale is about to <strong><a href="https://steem-bet.com/">start in 2 days!</a></strong></p><p>When our started the development of SteemBet Dice game, we couldn’t imagine that our game would go so viral and that SteemBet would become one of the pioneers in this field. </p><p>In order to give back to our beloved community, we’ll distribute <a href="https://steem-bet.com/"><strong>4000 STEEM</strong> to SPT holders immediately</a> after Seed sale. Plus, investors in this earliest round will be given <a href="https://steem-bet.com/"><strong>60% more tokens</strong></a> as reward and overall <a href="https://steem-bet.com/">Return on Investment is estimated at 300%!</a></p><p>Join the whitelist on <strong><a href="https://steem-bet.com/">SteemBet webiste</a></strong> now and start investing! Feel free to ask us anything on <a href="https://discord.gg/tNWJEAD"><strong>Discord https://discord.gg/tNWJEAD</strong></a></p>![spt-sale-2-day.jpg](https://res.cloudinary.com/forgelab-io/image/upload/c_scale,w_400/v1555744963/steembet/spt-sale-2-day.jpg)
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@arcange ·
$0.04
Grenat work @netuoso! Thanks for being our protocol guardian angel.
πŸ‘  ,
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vote details (2)
@ayogom ·
$0.03
thank you!
πŸ‘  
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vote details (1)
@erikaflynn ·
Thanks for monitoring our security.
Good work!
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@exyle ·
Good catch. Thanks!
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@gadrian ·
Thank you!
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@glenalbrethsen ·
$0.11
Looks like you, @netuouso, are the hero of the day. :) Kudos for actually being on the lookout for something wrong, finding the vulnerability and working to fix it. A perfect trifecta of work and effort.

Now, for those of us who can appreciate this, but aren't certain just what it all may have meant for the pending transaction queue had it been attacked, is there anything you can explain about it that would help me to better understand what you all fixed without making any disclosures that shouldn't be disclosed? If not, that's okay. I'm still thankful for all you did. :)
πŸ‘  
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vote details (1)
@happyme ·
$0.03
A Denial Of Service (DOS) attack is where someone does something to keep the servers busy doing unnecessary work to slow the system down and prevent others from being able to access the service of the server. It would seem that there was a way to cause the transaction que to loop or do some other work that would keep it busy for a lengthy period of time and this was now fixed to prevent such an attack.
πŸ‘  ,
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vote details (2)
@isacoin ·
oh yeah @netuoso is great at breaking STEEM with no mention by the elite in control then they seem to make a false vulnerability to give another of steemit incs stooges a leg up

https://steemit.com/steem/@naturicia/nijeah-who-broke-the-blockchain
πŸ‘  ,
πŸ‘Ž  
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vote details (3)
@gtg ·
$0.03
Good work!
πŸ‘  
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vote details (1)
@isarmoewe ·
Thank *you*! :)
πŸ‘  ,
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vote details (2)
@mrosenquist ·
Well done!  You have my full upvote sir.
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@newageinv ·
Great work and appreciate you keeping your eye out for these things!  

Posted using [Partiko iOS](https://partiko.app/referral/newageinv)
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@nuancedthought ·
$0.03
Oh hey he comes out of hibernation to actually use the steem blockchain this month! haha
But thanks for the fix. 
πŸ‘  
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@netuoso ·
$0.03
Wonder what is more important for me to be doing... Commenting and posting about my life and my dogs? Or spending time building a business and working towards improving the security and resilience of the Steem blockchain. Hrmmmmmmmmmmmm.
πŸ‘  , , ,
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vote details (4)
@resiliencia ·
Thank you!  :)

Posted using [Partiko Android](https://partiko.app/referral/resiliencia)
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@ronel ·
Thanks man!

https://media.giphy.com/media/1lk1IcVgqPLkA/giphy.gif
πŸ‘  
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vote details (1)
@steemfeed ·
Thanks
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@steevc ·
$0.03
Thanks for spotting this and helping the team to deal with it. Perfect security is impossible, but I would hope the people will work together to make Steem more resilient
πŸ‘  
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@nuancedthought ·
So this was a vulnerability to the BlockChain itself?
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@andrarchy ·
Yes. Every piece of software has vulnerabilities, the goal is to make sure they are found and mitigated before they can be leveraged by a malicious actor.
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@pastrane ·
We are getting stronger.

![](https://cdn.steemitimages.com/DQmbLhqy9rG3d24jAuodWiytCi5GfvcD2zvt54wCsx5i4qE/image.png)
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@rishi556 ·
Thanks @netuoso. Community support is the way to go.
πŸ‘  
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@sativazeee ·
$0.04
sounds like there is a low level of trust within the organization... hopefully that improves..
πŸ‘  , , , , , , , ,
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vote details (9)
@netuoso ·
$0.03
This is how IT security traditionally works. There is a "need-to-know" basis around such things. IT admins often have access to highly sensitive information or data and need to keep it quiet.

Something such as a vulnerability shouldn't be discussed with too many people before a fix is made because word of mouth tends to spread quickly.

Kudos to the SteemIt team for keeping things quiet and quickly issuing a fix.
πŸ‘  , , ,
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vote details (4)
@ssteemhunter ·
![](https://cdn.steemitimages.com/DQmX68E1UCVUTK3GAqSM7MJSnTerz2dkiKXzmCfbF4neoZk/image.png)
![](https://cdn.steemitimages.com/DQmVyMc6fMi6eK8Deggvs6zpqZDZ9tQN7XiHBcoSJk23NTQ/image.png)  @netuoso
πŸ‘  
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vote details (1)
@steemitboard ·
Congratulations @steemitblog! You have completed the following achievement on the Steem blockchain and have been rewarded with new badge(s) :

<table><tr><td>https://steemitimages.com/60x70/http://steemitboard.com/@steemitblog/voted.png?201904170418</td><td>You received more than 50000 upvotes. Your next target is to reach 55000 upvotes.</td></tr>
</table>

<sub>_You can view [your badges on your Steem Board](https://steemitboard.com/@steemitblog) and compare to others on the [Steem Ranking](http://steemitboard.com/ranking/index.php?name=steemitblog)_</sub>
<sub>_If you no longer want to receive notifications, reply to this comment with the word_ `STOP`</sub>



###### [Vote for @Steemitboard as a witness](https://v2.steemconnect.com/sign/account-witness-vote?witness=steemitboard&approve=1) to get one more award and increased upvotes!
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@theguruasia ·
$0.15
@steemitblog,
Thank you for sharing this update and personally I was not aware about this problem till I read this post!

@netuoso,
Thank you for highlighting such important issues and really appreciate it!

Cheers~
πŸ‘  , , , ,
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vote details (5)
@tts ·
To listen to the audio version of this article click on the play image.
[![](https://s18.postimg.org/51o0kpijd/play200x46.png)](http://ec2-52-72-169-104.compute-1.amazonaws.com/steemitblog__denial-of-service-vulnerability-fix.mp3)
Brought to you by [@tts](https://steemit.com/tts/@tts/introduction). If you find it useful please consider upvoting this reply.
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@uyobong ·
Good work and update to #Steem users. Thanks @STeemitblog. Glad we  have users like @netuoso - Thanks  man!
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