avatarTeri Radichel

Summary

Teri Radichel has identified a history bug affecting AWS CloudShell and other environments like a Mac terminal connected via SSH to an Amazon Linux EC2 instance, suggesting a potential issue with the underlying compute environment or network rather than the browser or terminal.

Abstract

The article discusses a history bug initially observed in AWS CloudShell, which has since been found to affect other environments. Teri Radichel, a cybersecurity expert, points out that the issue is not isolated to CloudShell or the Chrome browser but also occurs in a terminal window on a Mac when connected to an Amazon Linux instance on EC2. The problem manifests when pressing the up arrow key, resulting in unexpected behavior, regardless of the commands being used. Radichel hypothesizes that the root cause may lie within the network, the Amazon Linux operating system, or the underlying hardware, as the anomaly persists across different code bases. The article invites readers to follow for updates and provides links to Radichel's work, including cybersecurity books, presentations, and her company, 2nd Sight Lab, which offers penetration testing, security assessments, and consulting services.

Opinions

  • The author believes the history bug is not specific to AWS CloudShell but is a broader issue, possibly related to the underlying compute environment.
  • Radichel suggests that the problem is unlikely to be with the browser or terminal, as different code bases yield the same incorrect results.
  • The possibility of a network issue or a flaw within the Amazon Linux OS is considered as a potential cause of the bug.
  • The article implies that the bug might be related to the underlying hardware, though this has not been deeply investigated yet.

History Bug in AWS Compute?

This problem originally reported as a AWS CloudShell bug is not specific to CloudShell

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I originally reported this problem in AWS CloudShell when using Chrome but apparently it is not specific to CloudShell.

The same issue is also occuring in a terminal window on a Mac when connected via SSH to an EC2 Amazon Linux instance.

As you can see from the last post and this one it is happening when I am running completely different commands. So it seems like possibly a problem with the underlying compute environment?

It’s definitely not the browser or the terminal. Two completely different code bases produce the same results. It could be a network issue? Or something deep in the mac OS? But it seems to make the most sense that this is a problem with the Amazon Linux OS or the underlying hardware without digging into it much more.

Follow for updates.

Teri Radichel | © 2nd Sight Lab 2023

About Teri Radichel:
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⭐️ 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
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❤️ Twitter: @teriradichel
❤️ LinkedIn: https://www.linkedin.com/in/teriradichel
❤️ Mastodon: @teriradichel@infosec.exchange
❤️ Facebook: 2nd Sight Lab
❤️ YouTube: @2ndsightlab
Bug
AWS
Amazon Linux
Hardware
Shell
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