CVE-2023-5726

Gentoo Linux Security Advisory 202402-25

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A website could have obscured the full screen notification by using the file open dialog. This could have led to user confusion and possible spoofing attacks. *Note: This issue only affected macOS operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

Un sitio web podría haber oscurecido la notificación de pantalla completa utilizando el cuadro de diálogo de apertura de archivo. Esto podría haber generado confusión en los usuarios y posibles ataques de suplantación de identidad. *Nota: Este problema solo afectó a los sistemas operativos macOS. Otros sistemas operativos no se ven afectados.* Esta vulnerabilidad afecta a Firefox < 119, Firefox ESR < 115.4 y Thunderbird < 115.4.1.

This update for MozillaFirefox fixes the following issues. Updated to version 115.4.0 ESR. Fixed a potential clickjack via queued up rendering. Fixed a cross-Origin size and header leakage. Fixed unexpected errors when handling invalid cookie characters. Fixed a crash due to a large WebGL draw. Fixed an issue where WebExtensions could open arbitrary URLs. Fixed an issue where fullscreen notifications would be obscured by file the open dialog on macOS. Fixed a download protection bypass on on Windows. Fixed a crash caused by improper object tracking during GC in the JavaScript engine. Fixed an issue where fullscreen notifications would be obscured by WebAuthn prompts. Fixed multiple memory safety issues. Fixed multiple memory safety issues.

*Credits: Edgar Chen and Hafiizh

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-10-23 CVE Reserved
2023-10-24 CVE Published
2024-09-11 CVE Updated
2025-04-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://bugzilla.mozilla.org/show_bug.cgi?id=1846205	2023-11-02
https://www.mozilla.org/security/advisories/mfsa2023-45	2023-11-02
https://www.mozilla.org/security/advisories/mfsa2023-46	2023-11-02
https://www.mozilla.org/security/advisories/mfsa2023-47	2023-11-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"	Firefox Search vendor "Mozilla" for product "Firefox"	< 119.0 Search vendor "Mozilla" for product "Firefox" and version " < 119.0"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Mozilla Search vendor "Mozilla"	Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"	< 115.4 Search vendor "Mozilla" for product "Firefox Esr" and version " < 115.4"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Mozilla Search vendor "Mozilla"	Thunderbird Search vendor "Mozilla" for product "Thunderbird"	< 115.4.1 Search vendor "Mozilla" for product "Thunderbird" and version " < 115.4.1"	-	Affected	in	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe