CVE-2019-11748

Mozilla: Persistence of WebRTC permissions in a third party context

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

WebRTC in Firefox will honor persisted permissions given to sites for access to microphone and camera resources even when in a third-party context. In light of recent high profile vulnerabilities in other software, a decision was made to no longer persist these permissions. This avoids the possibility of trusted WebRTC resources being invisibly embedded in web content and abusing permissions previously given by users. Users will now be prompted for permissions on each use. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.

WebRTC en Firefox respetará los permisos persistentes otorgados a los sitios para acceder a recursos de micrófono y cámara incluso en un contexto de terceros. A la luz de las recientes vulnerabilidades de alto perfil en otro software, se tomó la decisión de no conservar estos permisos. Esto evita la posibilidad de que los recursos confiables de WebRTC se incorporen de forma no visible en el contenido web y abusen de los permisos otorgados previamente por los usuarios. Ahora se solicitará a los usuarios permisos para cada uso. Esta vulnerabilidad afecta a Firefox versiones anteriores a 69 y Firefox ESR versiones anteriores a 68.1.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-05-03 CVE Reserved
2019-09-04 CVE Published
2024-08-04 CVE Updated
2024-09-20 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-281: Improper Preservation of Permissions
CWE-732: Incorrect Permission Assignment for Critical Resource

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html	2020-08-24
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html	2020-08-24
https://www.mozilla.org/security/advisories/mfsa2019-25	2020-08-24
https://www.mozilla.org/security/advisories/mfsa2019-26	2020-08-24
https://access.redhat.com/security/cve/CVE-2019-11748	2019-09-04
https://bugzilla.redhat.com/show_bug.cgi?id=1748665	2019-09-04

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"				< 69.0 Search vendor "Mozilla" for product "Firefox" and version " < 69.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 68.1.0 Search vendor "Mozilla" for product "Firefox Esr" and version " < 68.1.0"		-		Affected