CVE-2019-11743

Mozilla: Cross-origin access to unload event attributes

Severity Score

3.7

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Navigation events were not fully adhering to the W3C's "Navigation-Timing Level 2" draft specification in some instances for the unload event, which restricts access to detailed timing attributes to only be same-origin. This resulted in potential cross-origin information exposure of history through timing side-channel attacks. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

Los eventos de navegación no se adhirieron totalmente a la especificación borrador del "Navigation-Timing Level 2" de W3C en algunas instancias para el evento de descarga, que restringe el acceso a los atributos de sincronización detallados para que solo sean del mismo origen. Esto resultó en una posible exposición de información de origen cruzado mediante la sincronización de ataques de canal lateral. Esta vulnerabilidad afecta a Firefox versiones anteriores a 69, Thunderbird versiones anteriores a 68.1, Thunderbird versiones anteriores a 60.9, Firefox versiones anteriores a 60.9 y Firefox ESR versiones anteriores a 68.1.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

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
2024-08-04 First Exploit
2024-09-20 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-203: Observable Discrepancy
CWE-829: Inclusion of Functionality from Untrusted Control Sphere

CAPEC

References (14)

URL	Tag	Source

URL	Date	SRC
https://w3c.github.io/navigation-timing	2024-08-04

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html	2020-08-24
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html	2020-08-24
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://security.gentoo.org/glsa/201911-07	2020-08-24
https://usn.ubuntu.com/4150-1	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://www.mozilla.org/security/advisories/mfsa2019-27	2020-08-24
https://www.mozilla.org/security/advisories/mfsa2019-29	2020-08-24
https://www.mozilla.org/security/advisories/mfsa2019-30	2020-08-24
https://access.redhat.com/security/cve/CVE-2019-11743	2019-09-19
https://bugzilla.redhat.com/show_bug.cgi?id=1748654	2019-09-19

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"				< 60.9.0 Search vendor "Mozilla" for product "Firefox Esr" and version " < 60.9.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				>= 68.0 < 68.1.0 Search vendor "Mozilla" for product "Firefox Esr" and version " >= 68.0 < 68.1.0"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 60.9.0 Search vendor "Mozilla" for product "Thunderbird" and version " < 60.9.0"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				>= 68.0 < 68.1.0 Search vendor "Mozilla" for product "Thunderbird" and version " >= 68.0 < 68.1.0"		-		Affected