CVE-2019-11730

Mozilla: Same-origin policy treats all files in a directory as having the same-origin

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability exists where if a user opens a locally saved HTML file, this file can use file: URIs to access other files in the same directory or sub-directories if the names are known or guessed. The Fetch API can then be used to read the contents of any files stored in these directories and they may uploaded to a server. It was demonstrated that in combination with a popular Android messaging app, if a malicious HTML attachment is sent to a user and they opened that attachment in Firefox, due to that app's predictable pattern for locally-saved file names, it is possible to read attachments the victim received from other correspondents. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

Se presenta una vulnerabilidad donde, si un usuario abre un archivo HTML guardado localmente, este archivo puede usar URIs file: para acceder a otros archivos en el mismo directorio o subdirectorios si los nombres son conocidos o adivinados. La API Fetch puede ser usada para leer el contenido de los archivos almacenados en estos directorios y pueden ser cargados en un servidor. Se demostró que, en combinación con una popular aplicación de mensajería de Android, si un archivo adjunto HTML malicioso se envía a un usuario y lo abrió en Firefox, debido al patrón predecible de esta aplicación para los nombres de archivos guardados localmente, es posible leer los archivos adjuntos que la víctima recibió de otros corresponsales. Esta vulnerabilidad afecta a Firefox ESR anterior a versión 60.8, Firefox anterior a versión 68 y Thunderbird anterior a versión 60.8.

*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
2019-07-11 CVE Published
2019-12-22 First Exploit
2024-07-16 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-829: Inclusion of Functionality from Untrusted Control Sphere

CAPEC

References (15)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2019/08/msg00001.html	Mailing List
https://lists.debian.org/debian-lts-announce/2019/08/msg00002.html	Mailing List

URL	Date	SRC
https://github.com/alidnf/CVE-2019-11730	2019-12-22

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html	2023-01-31
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html	2023-01-31
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.html	2023-01-31
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html	2023-01-31
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html	2023-01-31
https://security.gentoo.org/glsa/201908-12	2023-01-31
https://security.gentoo.org/glsa/201908-20	2023-01-31
https://www.mozilla.org/security/advisories/mfsa2019-21	2023-01-31
https://www.mozilla.org/security/advisories/mfsa2019-22	2023-01-31
https://www.mozilla.org/security/advisories/mfsa2019-23	2023-01-31
https://access.redhat.com/security/cve/CVE-2019-11730	2019-07-16
https://bugzilla.redhat.com/show_bug.cgi?id=1728438	2019-07-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Suse Search vendor "Suse"	Package Hub Search vendor "Suse" for product "Package Hub"	-	-	Affected	in	Suse Search vendor "Suse"	Linux Enterprise Search vendor "Suse" for product "Linux Enterprise"	12.0 Search vendor "Suse" for product "Linux Enterprise" and version "12.0"	-	Safe
Mozilla Search vendor "Mozilla"		Firefox Search vendor "Mozilla" for product "Firefox"				< 68.0 Search vendor "Mozilla" for product "Firefox" and version " < 68.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 60.8 Search vendor "Mozilla" for product "Firefox Esr" and version " < 60.8"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 60.8 Search vendor "Mozilla" for product "Thunderbird" and version " < 60.8"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.0 Search vendor "Opensuse" for product "Leap" and version "15.0"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.1 Search vendor "Opensuse" for product "Leap" and version "15.1"		-		Affected