Something’s Fishy: Unraveling the Shocking Vulnerability in Fish Command Line Shell

A vulnerability in the Fish command line shell could allow a cyber attacker to execute arbitrary commands. There’s no workaround, so upgrading your software is the only solution. Don’t flounder, act now!

Hot Take:

Well, well, well, looks like the wise-cracking, all-knowing command line shell Fish has found itself in a bit of hot water. Seems like it has been caught floundering around with a vulnerability that could allow some cyber punk to execute arbitrary code. And no, this is not some geeky version of “Finding Nemo”. It’s a full-blown, high-tech whodunit where the villain could be lurking in your very own git repository. So, let’s dive deeper, shall we?

Key Points:

  • A vulnerability has been found in Fish, a command line shell used on macOS, Linux, and other operating systems.
  • The flaw could allow for the execution of arbitrary code if a user unknowingly enters a compromised git repository.
  • There is currently no known workaround, hence a software upgrade is recommended.
  • Versions of Fish 3.4.0 and above are not affected by this vulnerability.
  • The issue has been assigned the identifier CVE-2022-20001.

The Back Channel:

"Something's Fishy Here"

Fish, the command line shell known for its user-friendly features like syntax highlighting and autosuggest-as-you-type, has been caught in a net of its own making. A vulnerability has been discovered that could potentially allow a cyber attacker to execute arbitrary commands. And you thought your worst problem was a fish bone stuck in your throat!

"Hook, Line and Sinker"

The flaw comes into play if a user is tricked into entering a git repository that is under the control of an attacker. This could occur on a shared filesystem or even when unpacking an archive. Once in, the attacker could potentially execute arbitrary commands. So it's not just phishing we have to worry about, now it's fishing too!

"No Fisherman's Friend"

Sadly, there's no known workaround for this vulnerability at this time. The only solution is to upgrade your software. Gentoo Linux users are advised to upgrade to the latest version of Fish, 3.4.0 or above. So, it's time to throw back that old version and reel in a new one!

"In Deep Water"

This vulnerability is no small fry. It has been assigned the identifier CVE-2022-20001 and has been classified as having a severity level of 'Normal.' But as we know, in the digital ocean, even 'Normal' can quickly escalate to 'Titanic' if not addressed promptly. So, let's not leave any room for floundering, shall we?

Tags: arbitrary code execution, Fish Vulnerability, Gentoo Linux, Git Repository, Linux Security Advisory, operating systems, Security Bugs