CVE-2024-27301: support app Privilege Escalation

Description

Support App is an opensource application specialized in managing Apple devices. It's possible to abuse a vulnerability inside the postinstall installer script to make the installer execute arbitrary code as root. The cause of the vulnerability is the fact that the shebang `#!/bin/zsh` is being used. When the installer is executed it asks for the users password to be executed as root. However, it'll still be using the $HOME of the user and therefore loading the file `$HOME/.zshenv` when the `postinstall` script is executed. An attacker could add malicious code to `$HOME/.zshenv` and it will be executed when the app is installed. An attacker may leverage this vulnerability to escalate privilege on the system. This issue has been addressed in version 2.5.1 Rev 2. All users are advised to upgrade. There are no known workarounds for this vulnerability.

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CVSS v3.1 Score

7.3

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-269 CWE-269

Affected Products

Vendor	Product	Versions
root3	support_app	2.3.1 — 2.5.1

References

Advisories & Patches

https://github.com/root3nl/SupportApp/commit/e866b2aa4028f6a982977f462c0f7550d952c5d0 https://github.com/root3nl/SupportApp/security/advisories/GHSA-jr78-247f-rhqc https://github.com/root3nl/SupportApp/commit/e866b2aa4028f6a982977f462c0f7550d952c5d0 https://github.com/root3nl/SupportApp/security/advisories/GHSA-jr78-247f-rhqc

Exploits

https://github.com/root3nl/SupportApp/security/advisories/GHSA-jr78-247f-rhqc https://github.com/root3nl/SupportApp/security/advisories/GHSA-jr78-247f-rhqc

Frequently Asked Questions

What is CVE-2024-27301? +

Support App is an opensource application specialized in managing Apple devices. It's possible to abuse a vulnerability inside the postinstall installer script to make the installer execute arbitrary code as root. The cause of the vulnerability is the fact that the shebang `#!/bin/zsh` is being used. When the installer is executed it asks for the users password to be executed as root. However, it'll still be using the $HOME of the user and therefore loading the file `$HOME/.zshenv` when the `postinstall` script is executed. An attacker could add malicious code to `$HOME/.zshenv` and it will be executed when the app is installed. An attacker may leverage this vulnerability to escalate privilege on the system. This issue has been addressed in version 2.5.1 Rev 2. All users are advised to upgrade. There are no known workarounds for this vulnerability. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2024-27301? +

CVE-2024-27301 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-27301? +

CVE-2024-27301 affects products from root3, specifically: support_app. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-27301? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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