MediumPublic exploit

Reflected XSS in Umbrel use-auth.tsx login redirect

IdentifiersCVE-2024-49379CWE-79· Improper Neutralization of Input…

A reflected cross-site scripting (XSS) vulnerability exists in the login functionality of Umbrel before version 1.2.2, specifically in the use-auth.tsx component. The vulnerability is triggered when a malicious JavaScript URL is supplied to the 'redirect' query parameter. Upon successful login, the supplied JavaScript is executed in the user's browser context.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of the victim's session after login, potentially leading to session hijacking, credential theft, or further attacks against the user's environment.

Mitigation

If you can’t patch tonight, do this now.

As an interim measure, users should avoid clicking on login links with untrusted or suspicious 'redirect' parameters. Web application firewalls (WAFs) or browser-based XSS protections may provide partial mitigation, but upgrading to the fixed version is strongly recommended.

Remediation

Patch, then assume compromise.

Upgrade Umbrel to version 1.2.2 or later, where the vulnerability in the use-auth.tsx login redirect parameter has been fixed.

PUBLIC EXPLOITS

Exploits

1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.

VALID 1 / 1 TOTALView more in app

CVE-2024-49379MaturityPoCVerified exploit

This repository provides a Python-based Proof of Concept (PoC) exploit for CVE-2024-49379, a critical XSS vulnerability in UmbrelOS versions prior to 1.2.2. The repository contains two files: a detailed README.md explaining the vulnerability, exploitation steps, and mitigation, and poc.py, a Python script that generates a malicious URL targeting the vulnerable login page. The exploit leverages a crafted 'redirect' parameter to inject JavaScript, which, when executed in a victim's browser, opens a WebSocket connection to the Umbrel terminal and sends commands to exfiltrate sensitive data (such as /etc/shadow) to a file on the server. The exploit is a proof-of-concept and requires the victim to be tricked into clicking the malicious link. The repository is not part of any exploit framework and is intended for educational and authorized testing purposes only.

OHDUDEOKNICEDisclosed Nov 16, 2024pythonbrowsernetwork

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType

UmbrelUmbrelapplication

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ACTIVITY FEED

Recent activity

No public activity tracked yet. Mallory keeps watching.

0 SOURCESView more in app

No public activity observed for this vulnerability.

What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

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Social activity