9.3
CRITICAL
CVE-2019-9812
"Firefox Sync Account Escalation"
Description

Given a compromised sandboxed content process due to a separate vulnerability, it is possible to escape that sandbox by loading accounts.firefox.com in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then synchronized to the local machine and the compromised browser would restart without the sandbox if a crash is triggered. This vulnerability affects Firefox ESR < 60.9, Firefox ESR < 68.1, and Firefox < 69.

INFO

Published Date :

Jan. 8, 2020, 10:15 p.m.

Last Modified :

Oct. 21, 2024, 1:55 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.8

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2019-9812 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mozilla firefox
2 Mozilla firefox_esr
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-9812.

URL Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1538008 Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1538015 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2019-25/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-26/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-27/ Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-9812 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-9812 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CPE Deprecation Remap by [email protected]

    Oct. 21, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions from (including) 61.0 from (excluding) 68.1 OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions from (including) 61.0 from (excluding) 68.1
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Jul. 21, 2021

    Action Type Old Value New Value
    Changed CWE CWE-20 NVD-CWE-noinfo
  • Initial Analysis by [email protected]

    Jan. 13, 2020

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H
    Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1538008 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1538008 Permissions Required
    Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1538015 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1538015 Permissions Required
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2019-25/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2019-25/ Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2019-26/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2019-26/ Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2019-27/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2019-27/ Vendor Advisory
    Added CWE NIST CWE-20
    Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 69.0 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 60.9 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions from (including) 61.0 up to (excluding) 68.1
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-9812 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-9812 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.53 }} 0.16%

score

0.74441

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability