9.8
CRITICAL
CVE-2019-9791
Thunderbird/Javascript Type Confusion Vulnerability
Description

The type inference system allows the compilation of functions that can cause type confusions between arbitrary objects when compiled through the IonMonkey just-in-time (JIT) compiler and when the constructor function is entered through on-stack replacement (OSR). This allows for possible arbitrary reading and writing of objects during an exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

INFO

Published Date :

April 26, 2019, 5:29 p.m.

Last Modified :

March 30, 2022, 6:48 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2019-9791 has a 12 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2019-9791 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 Redhat enterprise_linux
2 Redhat enterprise_linux_server_aus
3 Redhat enterprise_linux_server_tus
4 Redhat enterprise_linux_eus
1 Mozilla firefox
2 Mozilla firefox_esr
3 Mozilla thunderbird
: Total Affected Vendor : 2 | Products : 7
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-2019-9791.

URL Resource
https://access.redhat.com/errata/RHSA-2019:0966 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1144 Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1530958 Exploit Issue Tracking Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-07/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-08/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-11/ 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).

Profile Photo
bmphx2/JSTargetFuzzer-v1.0

None

Dockerfile Shell Swift JavaScript Python C C++

Updated: 1 month, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Sept. 26, 2024, 7:52 p.m. This repo has been linked 44 different CVEs too.
Profile Photo
otravidaahora2t/js-vuln-db

None

Updated: 3 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : Aug. 2, 2024, 4:55 p.m. This repo has been linked 179 different CVEs too.
Profile Photo
TimerIzaya/fuzzilli-plus

None

Dockerfile Shell Swift JavaScript Python C

Updated: 2 months ago
0 stars 0 fork 0 watcher
Born at : July 28, 2024, 8:12 a.m. This repo has been linked 60 different CVEs too.
Profile Photo
TimerIzaya/izayailli

None

Dockerfile Shell Swift JavaScript Python C

Updated: 3 months, 4 weeks ago
0 stars 0 fork 0 watcher
Born at : July 10, 2024, 7:52 a.m. This repo has been linked 56 different CVEs too.
Profile Photo
zhangjiahui-buaa/MasterThesis

None

Dockerfile Shell Swift JavaScript Python C

Updated: 5 months, 4 weeks ago
0 stars 0 fork 0 watcher
Born at : May 4, 2024, 7:46 a.m. This repo has been linked 60 different CVEs too.
Profile Photo
RUB-SysSec/JIT-Picker

None

Dockerfile Shell OCaml Swift C

Updated: 2 months, 2 weeks ago
60 stars 8 fork 8 watcher
Born at : Oct. 10, 2022, 1:34 p.m. This repo has been linked 38 different CVEs too.
Profile Photo
Sp0pielar/CVE-2019-9791

Exploit chain for CVE-2019-9791 & CVE-2019-11708 against firefox 65.0 on windows 64bit

HTML JavaScript

Updated: 2 months, 4 weeks ago
2 stars 1 fork 1 watcher
Born at : Sept. 8, 2021, 2:38 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
ulexec/Exploits

Repository of exploits for research purposes

JavaScript Dockerfile Shell Python HTML Rich Text Format Makefile C

Updated: 6 months, 2 weeks ago
11 stars 0 fork 0 watcher
Born at : May 15, 2021, 4:15 p.m. This repo has been linked 6 different CVEs too.
Profile Photo
n0-traces/cve_monitor

Automatic monitor github cve using Github Actions

Python

Updated: 1 month, 3 weeks ago
1 stars 56 fork 56 watcher
Born at : April 7, 2021, 11:16 a.m. This repo has been linked 1007 different CVEs too.
Profile Photo
ZihanYe/web-browser-vulnerabilities

a list of web browser vulnerabilities

HTML JavaScript XSLT Python

Updated: 3 months, 2 weeks ago
20 stars 1 fork 1 watcher
Born at : April 26, 2020, 9:52 a.m. This repo has been linked 27 different CVEs too.
Profile Photo
googleprojectzero/fuzzilli

A JavaScript Engine Fuzzer

C Swift Shell Dockerfile JavaScript Python

Updated: 2 months ago
1851 stars 290 fork 290 watcher
Born at : March 20, 2019, 3:32 p.m. This repo has been linked 60 different CVEs too.
Profile Photo
tunz/js-vuln-db

A collection of JavaScript engine CVEs with PoCs

javascript cve vulnerability

Updated: 2 months, 1 week ago
2275 stars 387 fork 387 watcher
Born at : Aug. 6, 2016, 1:02 a.m. This repo has been linked 179 different CVEs too.

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

The following list is the news that have been mention CVE-2019-9791 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-9791 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.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Mar. 30, 2022

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://access.redhat.com/errata/RHSA-2019:0966 No Types Assigned https://access.redhat.com/errata/RHSA-2019:0966 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2019:1144 No Types Assigned https://access.redhat.com/errata/RHSA-2019:1144 Third Party Advisory
    Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1530958 Issue Tracking, Permissions Required, Vendor Advisory https://bugzilla.mozilla.org/show_bug.cgi?id=1530958 Exploit, Issue Tracking, Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*
  • CWE Remap by [email protected]

    Jul. 21, 2021

    Action Type Old Value New Value
    Changed CWE CWE-20 CWE-843
  • CVE Modified by [email protected]

    May. 13, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:1144 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 07, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:0966 [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 30, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2019-08/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2019-08/ Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2019-11/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2019-11/ Vendor Advisory
    Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1530958 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1530958 Issue Tracking, Permissions Required, Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2019-07/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2019-07/ Vendor Advisory
    Added CWE CWE-20
    Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 66.0 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 60.6.0 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 60.6.0
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-2019-9791 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-2019-9791 weaknesses.

Exploit Prediction

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

22.04 }} 1.50%

score

0.96588

percentile

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