Cyber Resilience

CVE-2024-43793

MediumPublic PoC

Published: 11 September 2024

Published
11 September 2024
Modified
16 September 2024
KEV Added
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Patch
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CVSS Score v3.1 6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.0012 30.5th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-43793 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Halo Halo. Its CVSS base score is 6.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Drive-by Compromise (T1189); ranked at the 30.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

Halo is an open source website building tool. A security vulnerability has been identified in versions prior to 2.19.0 of the Halo project. This vulnerability allows an attacker to execute malicious scripts in the user's browser through specific HTML and…

more

JavaScript code, potentially leading to a Cross-Site Scripting (XSS) attack. This vulnerability is fixed in 2.19.0.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1189 Drive-by Compromise Initial Access
Adversaries may gain access to a system through a user visiting a website over the normal course of browsing.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
attack.mitre.org →
T1217 Browser Information Discovery Discovery
Adversaries may enumerate information about browsers to learn more about compromised environments.
attack.mitre.org →
T1539 Steal Web Session Cookie Credential Access
An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.
attack.mitre.org →
T1555.003 Credentials from Web Browsers Credential Access
Adversaries may acquire credentials from web browsers by reading files specific to the target browser.
attack.mitre.org →
Why these techniques?

Stored XSS in Halo editor's <a> tag enables low-privileged authenticated attackers to inject JavaScript payloads into content viewed by users, facilitating drive-by compromise (T1189), public-facing app exploitation (T1190), JS execution (T1059.007), browser discovery (T1217), web session cookie theft (T1539), and browser credential theft (T1555.003).

Affected Assets

halo
halo
≤ 2.19.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation
addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering
addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References