Iterm2 Mac Terminal App

A 7-year-old critical remote code execution vulnerability has been discovered in iTerm2 macOS terminal emulator app—one of the most popular open source replacements for Mac's built-in terminal app.

Original Post from Security Affairs
Author: Pierluigi Paganini

Security experts discovered a critical remote code execution vulnerability, tracked as CVE-2019-9535, in the GPL-licensed iTerm2 macOS terminal emulator app.

Security experts at cybersecurity firm Radically Open Security (ROS) discovered a 7-year old critical remote code execution vulnerability in the GPL-licensed iTerm2 macOS terminal emulator app.

The iTerm2 macOS terminal emulator app is one of the most popular open-source replacements for Mac’s built-in terminal app.

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The RCE flaw tracked as CVE-2019-9535 was discovered as part of an independent security audit funded by the Mozilla Open Source Support Program (MOSS).

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“A security audit funded by the Mozilla Open Source Support Program (MOSS) has discovered a critical security vulnerability in the widely used macOS terminal emulator iTerm2.” reads the security advisory published by Mozilla. “During the audit, ROS identified a critical vulnerability in the tmux integration feature of iTerm2; this vulnerability has been present in iTerm2 for at least 7 years. An attacker who can produce output to the terminal can, in many cases, execute commands on the user’s computer.”

The RCE vulnerability resides in the tmux integration feature of iTerm2, it could be exploited by an attacker to execute arbitrary commands by providing malicious output to the terminal.

The experts published a video PoC that shows how to exploit the vulnerability by producing output to the terminal. Possible attack vectors would be connecting to an attacker-controlled SSH server or commands like curl http://attacker.com and tail -f /var/log/apache2/referer_log.

“Typically, this vulnerability would require some degree of user interaction or trickery; but because it can be exploited via commands generally considered safe, there is a high degree of concern about the potential impact,” Mozilla concludes.

The iTerms2 version 3.3.6 addresses the flaw that affects prior versions.

(SecurityAffairs –iTerms2, hacking)

The post Ops, popular iTerm2 macOS Terminal App is affected by a critical RCE since 2012 appeared first on Security Affairs.

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Author: Pierluigi Paganini

What is iTerm2?
iTerm2 is a replacement for Terminal and the successor to iTerm. It works on Macs with macOS 10.12 or newer. iTerm2 brings the terminal into the modern age with features you never knew you always wanted.

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Why do you need it?

If you spend a lot of time in a terminal, then you'll appreciate all the little things that add up to a lot. It is free software and you can find the source code on Github.
In most MacOS application you can hold ⌥ button and one of the arrow keys to jump words for faster navigation while editing large blocks of code.
Unfortunately, iTerm2 does not have these shortcuts by default, so having to change an argument in a long command (or correct a typo) can be a case of pressing ← and waiting.

Easiest way to setup KeyBoard Shortcut.

Iterm2 Mac Download

preference -> profile -> keys -> Natural key Editing

List of Keyboard Combination Below.