CVE-2024-5739

6.1 · MEDIUM

Published Jun 12, 2024 linecorp CWE-79 EPSS 0.27% (19th pctl) CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Overview

CVE-2024-5739 is a medium-severity vulnerability affecting linecorp line. It was published on June 12, 2024 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical Description

The in-app browser of LINE client for iOS versions below 14.9.0 contains a Universal XSS (UXSS) vulnerability. This vulnerability allows for cross-site scripting (XSS) where arbitrary JavaScript can be executed in the top frame from an embedded iframe on any displayed web site within the in-app browser. The in-app browser is usually opened by tapping on URLs contained in chat messages, and for the attack to be successful, the victim must trigger a click event on a malicious iframe. If an iframe embedded in any website can be controlled by an attacker, this vulnerability could be exploited to capture or alter content displayed in the top frame, as well as user session information. This vulnerability affects LINE client for iOS versions below 14.9.0 and does not affect other LINE clients such as LINE client for Android. Please update LINE client for iOS to version 14.9.0 or higher.

Remediation

Check the references section for vendor advisories and patches from linecorp. Update line to the latest patched version. 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.

Affected Products

Vendor	Product	Versions	Status
linecorp	line	>= 14.0.0, < 14.9.0	Affected

References

Ref hackerone.com/reports/2284129 Ref hackerone.com/reports/2284129

Frequently Asked Questions

What is CVE-2024-5739?

CVE-2024-5739 is a medium-severity vulnerability affecting linecorp line. It was published on June 12, 2024 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2024-5739?

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-5739?

How can CyberStrike help with CVE-2024-5739?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-5739 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

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