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CVE-2019-9535

9.8 · CRITICAL

A vulnerability exists in the way that iTerm2 integrates with tmux's control mode, which may allow an attacker to execute arbitrary commands by providing malicious output to the terminal.

Published Oct 9, 2019CWE-349EPSS 2.46%

Overview

CVE-2019-9535 is a critical-severity vulnerability. It was published on October 9, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A vulnerability exists in the way that iTerm2 integrates with tmux's control mode, which may allow an attacker to execute arbitrary commands by providing malicious output to the terminal. This affects versions of iTerm2 up to and including 3.3.5. This vulnerability may allow an attacker to execute arbitrary commands on their victim's computer by providing malicious output to the terminal. It could be exploited using command-line utilities that print attacker-controlled content.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refblog.mozilla.org/security/2019/10/09/iterm2-critical-issue-moss-audit/Refgroups.google.com/forum/#%21topic/iterm2-discuss/57k_AuLdQa4Refkb.cert.org/vuls/id/763073/Refblog.mozilla.org/security/2019/10/09/iterm2-critical-issue-moss-audit/Refgroups.google.com/forum/#%21topic/iterm2-discuss/57k_AuLdQa4Refkb.cert.org/vuls/id/763073/

How CyberStrike helps

Frequently asked questions

What is CVE-2019-9535?

CVE-2019-9535 is a critical-severity vulnerability. It was published on October 9, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2019-9535?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-9535?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-9535?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-9535 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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