CVE-2019-11730 Detail

Current Description

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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  6.5 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1558299 Permissions Required 
https://lists.debian.org/debian-lts-announce/2019/08/msg00001.html Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2019/08/msg00002.html Third Party Advisory 
https://security.gentoo.org/glsa/201908-12
https://security.gentoo.org/glsa/201908-20
https://www.mozilla.org/security/advisories/mfsa2019-21/ Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2019-22/ Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2019-23/ Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

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Change History

9 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-11730
NVD Published Date:
07/23/2019
NVD Last Modified:
08/24/2020
Source:
Mozilla Corporation