avatarAnne Bonfert

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Abstract

7156">I covered user-specific secrets here:</p><div id="744d" class="link-block"> <a href="https://readmedium.com/create-a-per-user-secret-in-secrets-manager-part-1-bb97b66e2a2d"> <div> <div> <h2>User-Specific Secrets on AWS: IAM Policies</h2> <div><h3>ACM.82 IAM Policies to allow users to describe their own secrets</h3></div> <div><p>medium.com</p></div> </div> <div> <div style="background-image: url(https://miro.readmedium.com/v2/resize:fit:320/1*PcniDpBJq2db0jbdryc_Nw.png)"></div> </div> </div> </a> </div><h2 id="aada">Create the user-specific Secret to store the automation credentials</h2><p id="a515">Next I create <b>SandboxDevAutomationSecret</b> in Secrets Manager, encrypted with my <b>Sandbox KMS key</b>.</p><figure id="e15e"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*DQonCyF8UzPnZZoiGOKD9w.png"><figcaption></figcaption></figure><figure id="f7b3"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*zITxEtD__wFDwpPrBpqv4w.png"><figcaption></figcaption></figure><h2 id="2e63">Create a user-specific EC2 instance role for the SandboxDev user</h2><p id="3417">Next I create an EC2 instance role that the developer is allowed to pass to EC2 instances named <b>SandboxDevEC2Role</b>.</p><figure id="44ef"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*__fohZeTWjwdYrS__B4imQ.png"><figcaption></figcaption></figure><p id="eee9">The role will have a prefix with the username:</p><figure id="7afa"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*7dKW5KiQMivtKqjgzA_1Gw.png"><figcaption></figcaption></figure><p id="a338">This role is granted access to:</p><ul><li>Read the<b> SandboxDevSecret.</b></li><li>Pull containers from the <b>sandbox Elastic Container Repository.</b></li><li>Use the <b>sandbox KMS key </b>to access decrypt the secret and the container in the repository</li></ul><h2 id="df90">Create the Automation user</h2><p id="b752">Create the <b>SandboxDevAutomation</b> user. Do not give this user console access.</p><figure id="ddeb"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*QWVvQMA9aDCtmiVxSR61iw.png"><figcaption></figcaption></figure><p id="c19e">Remember that I already have a role (<b>CloneGitHubtoCodeCommitRole</b>) used by my batch job from prior posts. Create a policy that allows the SandboxDevAutomation user to use STS to assume that role.</p><p id="559f">The <b>SandboxDev</b> user needs permission to change the <b>credentials</b> <b>and</b> MFA device of the <b>SandboxDevAutomation</b> user.</p><h2 id="0f53">Edit the batch job role trust policy to allow the SandboxDevAutomation role to assume it</h2><p id="7f1d">We need to modify the trust policy to allow the <b>SandboxDevAutomation</b> <b>user</b> to assume the <b>CloneGitHubtoCodeCommitRole</b> role with MFA.</p><figure id="6ad1"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*xAHGslW3SSbv6c5NO8mhzg.png"><figcaption></figcaption></figure><p id="7ad0">Edit the trust policy:</p><figure id="cfaf"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*Vna71G_F2e-8Vdtw4yBwFw.png"><figcaption></figcaption></figure><p id="6a5a">Change the user to SandboxDev:</p><figure id="f788"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*vpSqEqjFa_qg59v_dnPCzQ.png"><figcaption></figcaption></figure><h2 id="49b3">Add permissions to KMS Key Resource Policy</h2><p id="8cf1">Next I need to allow the <b>SandboxDev</b> user to encrypt and decrypt and the <b>SanboxDevEC2Role</b> to decrypt with the <b>sandbox KMS Key.</b> I edit my automation to add those two roles to the encrypt and decrypt users.</p><figure id="380f"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*UkzCt10p0iqCR4OpMs6uhQ.png"><figcaption></figcaption></figure><h2 id="d015">Login as SandboxDev</h2><p id="725d">Log into the AWS Console with the SandboxDev user. If you’ve been following along, you have an account with a prefix specific to your organization and -Dev at the end if you used my deployment scripts.</p><figure id="13d5"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*5L-3C9ORVXOWv6KRdCkBLg.png"><figcaption></figcaption></figure><h2 id="d260">Add MFA devices</h2><p id="5cca">Add a Hardware MFA device to the SandboxDev User.</p><figure id="21f0"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*8s8rTuyWOsLAQUEqfwTtOQ.png"><figcaption></figcaption></figure><p id="c0e6">Add a Virtual MFA device to the SandboxDevAutomation User.</p><p id="5cec">I explain why I do not use a Yubikey to generate MFA codes here:</p><div id="1308" class="link-block"> <a href="https://readmedium.com/the-yubikey-cli-and-aws-mfa-50e6be0698a7"> <div> <div> <h2>The Yubikey CLI and AWS MFA</h2> <div><h3>ACM.11 Considering the attack surface and MFA choices for our Security Batch Jobs</h3></div> <div><p>medium.com</p></div> </div> <div> <div style="background-image: url(https://miro.readmedium.com/v2/resize:fit:320/1*SFAKbcK__GlbJbJJJVXK9w.png)"></div> </div> </div> </a> </div><figure id="5893"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*iFl4DTQNuplt-SGONHpNYw.png"><figcaption></figcaption></figure><h2 id="d7df">Create automation credentials</h2><p id="b9e4">Create an <b>Access key</b> for the <b>SandboxDevAutomation</b> user.</p><figure id="7f1e"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*KoVfxp-aJvzBiacPyFeMlA.png"><figcaption></figcap

Options

tion></figure><p id="217e">I have explained before that I disagree with the verbiage on this page. The CLI in the browser has a much larger attack surface and it depends how you are using the keys.</p><figure id="0423"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*_CCe4xu8AcNLloUHgvF5Aw.png"><figcaption></figcaption></figure><h2 id="8caa">Store the credentials in the SandboxDevAutomationSecret</h2><p id="24aa">Head to the Secrets Manager dashboard.</p><p id="432d">Click on the SandboxDevAutomationSecret.</p><figure id="6893"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*cz9jnYSnBsGXf9Y8VZjGPQ.png"><figcaption></figcaption></figure><p id="f616">Store the secret key id and secret access key.</p><figure id="4b95"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*-G9eR929nKSsGWrsOuzucg.png"><figcaption></figcaption></figure><h2 id="5496">Test Launching an EC2 Instance with the SandboxDev role</h2><p id="8907">Head over the EC2 dashboard and test launching an EC2 Instance. Recall that the Instance name needs to match what we specified in the policy above.</p><figure id="a1c7"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*FqCLLp7V854JJZa88TIdvA.png"><figcaption></figcaption></figure><p id="2bc8">If you need to decode any error messages I explained how to do that here:</p><div id="bb13" class="link-block"> <a href="https://readmedium.com/decoding-aws-error-messages-db0e0cbecf0d"> <div> <div> <h2>Decoding AWS Error Messages</h2> <div><h3>Free Content on Jobs in Cybersecurity | Sign up for the Email List</h3></div> <div><p>medium.com</p></div> </div> <div> <div style="background-image: url(https://miro.readmedium.com/v2/resize:fit:320/1*4oxP4LXk8l8c3mpRvO7ejg.png)"></div> </div> </div> </a> </div><p id="bd85">Choose the existing networking created for EC2 instances from prior posts.</p><div id="a149" class="link-block"> <a href="https://readmedium.com/automating-cybersecurity-metrics-890dfabb6198"> <div> <div> <h2>Automating Cybersecurity Metrics (ACM)</h2> <div><h3>A series of blog posts on cybersecurity metrics and security automation</h3></div> <div><p>medium.com</p></div> </div> <div> <div style="background-image: url(https://miro.readmedium.com/v2/resize:fit:320/1*L9lEIsaWt6xm2Op2ww-G5w.png)"></div> </div> </div> </a> </div><p id="2937">Choose the role we created under Advanced details.</p><figure id="8870"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/1*oHJior3Ueea6woDB1zqqKQ.png"><figcaption></figcaption></figure><p id="a822">One note that took me a bit to resolve. The message when your user does not have permission to pass the IAM role to the EC2 instance is a bit ambiguous.</p><div id="a0fb" class="link-block"> <a href="https://readmedium.com/ambiguous-error-message-when-a-user-doesnt-have-permission-to-pass-a-specific-iam-role-to-an-ec2-b005f338b6df"> <div> <div> <h2>Ambiguous Error Message When a User Doesn’t Have Permission to Pass a Specific IAM Role to an EC2…</h2> <div><h3>This error message needs to be more specific and doesn’t show up in CloudTrail for the User Name</h3></div> <div><p>medium.com</p></div> </div> <div> <div style="background-image: url(https://miro.readmedium.com/v2/resize:fit:320/1*4oxP4LXk8l8c3mpRvO7ejg.png)"></div> </div> </div> </a> </div><p id="51b2">Getting the resources setup took some time because I realized I had to revise my approach. I didn’t automate any of this but I will in the future. For now I just want to make sure it works. I can also figure out what permissions each policy requires.</p><p id="1fb5">I will test the initialization script in the next post.</p><p id="2c31">Follow for updates.</p><p id="4a3a">Teri Radichel | <i>© <a href="https://2ndsightlab.com/?source=post_page---------------------------">2nd Sight Lab</a> 2023</i></p><div id="8b5f"><pre><span class="hljs-section">About Teri Radichel:

⭐️ Author: Cybersecurity Books
⭐️ Presentations: Presentations by Teri Radichel
⭐️ Recognition: SANS Award, AWS Security Hero, IANS Faculty
⭐️ Certifications: SANS ~ GSE 240
⭐️ Education: BA Business, Master of Software Engineering, Master of Infosec
⭐️ Company: Penetration Tests, Assessments, Phone Consulting ~ 2nd Sight Lab</pre></div><div id="caae"><pre><span class="hljs-section">Need Help With Cybersecurity, Cloud, or Application Security?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span>
🔒 Request a penetration test or security assessment
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🔒 Cybersecurity Speaker for Presentation</pre></div><div id="530b"><pre>Follow <span class="hljs-keyword">for</span> more stories like <span class="hljs-keyword">this</span>:

❤️ Sign Up my Medium Email List ❤️ Twitter: <span class="hljs-meta">@teriradichel</span> ❤️ LinkedIn: https:<span class="hljs-comment">//www.linkedin.com/in/teriradichel</span> ❤️ Mastodon: <span class="hljs-meta">@teriradichel</span><span class="hljs-meta">@infosec</span>.exchange ❤️ Facebook: 2nd Sight Lab ❤️ YouTube: @2ndsightlab</pre></div><figure id="eecf"><img src="https://cdn-images-1.readmedium.com/v2/resize:fit:800/0*H9Ew1KCl-29nZiPR.jpeg"><figcaption></figcaption></figure></article></body>

WRITING PROMPT RESPONSE

Seasons in Life

And in nature

Credit: Anne Bonfert

Seasons. There is so much in my life getting described in seasons. I am a seasonal worker. I take leave in the off-season. I travel across countries to avoid the season of winter. And I experience different seasons on different continents.

So where should I start?

Credit: Anne Bonfert

High and low season

My work. Or the work I used to do. Sandboarding. I used to teach tourists how to board down a sand dune. Similar to snowboarding. But on the sand. In the desert.

A job like every other one in tourism. Season related. We had a high season. In some years I would work three months straight through. Without having a single day off.

And then there would come low season. Where I would work sometimes only two or three days a week. This is usually when I would take off. For a month or so. To go travel abroad.

I got paid per trip. So the income fluctuated tremendously. From one month to another. Saving money in the high season was vital for the low season. To get through the year one had to do some planning.

Credit: Anne Bonfert

Off-season

Later I became a skydiving instructor. The life between high and low season continued. Starting to work abroad to avoid off-seasons. Because off-seasons means no income. Or at least very little.

But there is always somewhere in the world the right season for skydiving. Which is usually summer. In some places, you can even jump all year around. Like in Namibia for example.

In other places, you can only jump and therefore work for half a year. Like in Germany for example. The season for us was a few months short due to Covid last year.

But hopefully this year we will get again a full season. Because everything tourism related is in off-season right now. And it feels like already for a year. Hopefully for not much longer.

Credit: Anne Bonfert

Winter and summer

I must admit. Together with the new hobby that I turned into my job I started to avoid one season. Winter. And I do miss it. I love snow. I love snowboarding. I love building igloos. And I love having snowball fights.

But when did I last get to experience a proper winter? With snow. With snowboarding. And cross country skiing. And igloos. It has been a while. Four years to be exact.

I’ve seen snow in between. On my hikes high up in the alps during the European summers. But that’s not the same. I would love to be in Europe right now. They have the winter of a lifetime.

A season like no other.

But don’t get me wrong. I love them all. Every season. Spring, Summer, Autumn, and winter. I live them as they come. Yet they aren’t all the same. A Namibian winter is far from a winter I grew up with.

Bringing me to the next topic…

Credit: Anne Bonfert

Rainy season

I got introduced to this kind of season about seven years ago. Every time I talk about it I have to add another year to it. But it has been that many years already since I stepped foot onto the African continent for the first time.

And that is when I got introduced to the dry season and rainy season. Ghana was the first African country I went to explore. And I got drained in heavy rain for the first few months and then all of a sudden there was no rain at all.

Which was new to me. Back home in Germany, I can expect rain every day of the year. In all four seasons. Even in winter. It doesn’t always come down as snow. It rains as well in winter.

But it doesn’t rain in the dry season in Ghana. That’s what I learned.

Credit: Anne Bonfert

And later on, I learned in Namibia what the rainy season really means. The word doesn’t just refer to the fact we get rain. It also refers to the outcome. Which is nature changing the country into a green landscape.

In a way, I’ve never seen that before. Germany is green even at the very end of winter. Don’t try to disagree with me or I’ll send you a picture of the desert in the dry season. Then you’ll know what I mean.

The changes this country does between dry and rainy season are incredible. I am talking about Namibia. A sub-Saharan country that is home to the oldest desert in the world. The Namib desert.

But also to a country that has large areas of semi-deserts and savannas. Bushland that only turns into a bush if it receives rain. Which it didn’t for most of my years being here.

Until this year.

Credit: Anne Bonfert Dry season 2017 vs. rainy season 2021

This year I learned what the rainy season means. The power of water is unbelievable. What it does to a landscape. Breathtakingly beautiful.

Credit: Anne Bonfert

Seasons in life

I’m going through phases in my life which could also be described as seasons. What is a season? A certain time period that is characteristic of something.

Just before I left for Africa I used to play Handball. Actively. I played around four times a week excluding the matches on the weekends. Our season would go from September until April.

Later on, I went through other sports which I would do for a season or a bit longer. Like rock climbing. Or surfing. That didn’t last very long. But now I picked up stand up paddleboarding. And that seems to be my latest passion.

Being an active outdoorsy person my seasons do go around nature and work. Which mostly get influenced by each other. I hope you got an insight into the seasons of my life.

Thanks Dennett for the creative writing prompt once again and I can’t wait to read everyone else’s writing prompt responses.

More about my writing prompt responses in W&W…

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Anne Bonfert is a traveler. Photographer. Writer. Teacher. Skydiving instructor. Adventure enthusiast. Nature lover. And fell in love with the African continent.

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