CVE-2022-26383

Mozilla: Browser window spoof using fullscreen mode

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

When resizing a popup after requesting fullscreen access, the popup would not display the fullscreen notification. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.

Al cambiar el tamaño de una ventana emergente después de solicitar acceso a pantalla completa, la ventana emergente no mostraba la notificación en pantalla completa. Esta vulnerabilidad afecta a Firefox < 98, Firefox ESR < 91,7 y Thunderbird < 91.7.

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as: When resizing a popup after requesting fullscreen access, the popup would not display the fullscreen notification.

USN-5321-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem. Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, spoof the browser UI, bypass security restrictions, obtain sensitive information, or execute arbitrary code. A TOCTOU bug was discovered when verifying addon signatures during install. A local attacker could potentially exploit this to trick a user into installing an addon with an invalid signature.

*Credits: N/A

CVSS Scores

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

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-03-03 CVE Reserved
2022-03-11 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-449: The UI Performs the Wrong Action

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://bugzilla.mozilla.org/show_bug.cgi?id=1742421	2022-12-30
https://www.mozilla.org/security/advisories/mfsa2022-10	2022-12-30
https://www.mozilla.org/security/advisories/mfsa2022-11	2022-12-30
https://www.mozilla.org/security/advisories/mfsa2022-12	2022-12-30
https://access.redhat.com/security/cve/CVE-2022-26383	2022-03-14
https://bugzilla.redhat.com/show_bug.cgi?id=2062220	2022-03-14

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"				< 98.0 Search vendor "Mozilla" for product "Firefox" and version " < 98.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 91.7 Search vendor "Mozilla" for product "Firefox Esr" and version " < 91.7"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 91.7 Search vendor "Mozilla" for product "Thunderbird" and version " < 91.7"		-		Affected