Known Exploited Vulnerability
8.8
HIGH
CVE-2019-17026
Mozilla Firefox And Thunderbird Type Confusion Vul - [Actively Exploited]
Description

Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1.

INFO

Published Date :

March 2, 2020, 5:15 a.m.

Last Modified :

Nov. 16, 2022, 3 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Mozilla Firefox and Thunderbird contain a type confusion vulnerability due to incorrect alias information in the IonMonkey JIT compiler when setting array elements.

Required Action :

Apply updates per vendor instructions.

Public PoC/Exploit Available at Github

CVE-2019-17026 has a 13 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-2019-17026 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
3 Mozilla thunderbird
1 Canonical ubuntu_linux
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-2019-17026.

URL Resource
http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html Exploit Third Party Advisory VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1607443 Issue Tracking Permissions Required
https://security.gentoo.org/glsa/202003-02 Third Party Advisory
https://usn.ubuntu.com/4335-1/ Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2020-03/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-04/ 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).

Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.

cisa-kev vulnerability 0day cisa exploits

Updated: 1 week, 5 days ago
516 stars 32 fork 32 watcher
Born at : April 19, 2022, 8:58 a.m. This repo has been linked 1181 different CVEs too.

Config files for my GitHub profile.

config github-config

Updated: 2 years, 6 months ago
1 stars 0 fork 0 watcher
Born at : March 19, 2022, 9:25 p.m. This repo has been linked 38 different CVEs too.

A personalized/enhanced re-creation of the Darkhotel "Double Star" APT exploit chain with a focus on Windows 8.1 and mixed with some of my own techniques

cve-2020-0674 cve-2019-17026 double star exploit chain firefox jit shellcode wpad pac eop rpc alpc darkhotel apt

HTML JavaScript C Assembly

Updated: 1 month, 1 week ago
144 stars 28 fork 28 watcher
Born at : April 9, 2021, 4:53 p.m. This repo has been linked 2 different CVEs too.

None

Updated: 6 months, 2 weeks ago
33 stars 3 fork 3 watcher
Born at : March 12, 2021, 12:22 p.m. This repo has been linked 1063 different CVEs too.

None

JavaScript

Updated: 2 years, 1 month ago
3 stars 1 fork 1 watcher
Born at : Feb. 24, 2021, 1:18 p.m. This repo has been linked 1 different CVEs too.

2020年发布到阿尔法实验室微信公众号的所有安全资讯汇总

Updated: 3 weeks, 2 days ago
40 stars 16 fork 16 watcher
Born at : Jan. 11, 2021, 2:08 a.m. This repo has been linked 189 different CVEs too.

A collection of software bug types and articles showcasing the hunt for and exploitation of them.

awesome-list software-bug vulnerabilities

Updated: 4 months ago
20 stars 4 fork 4 watcher
Born at : Jan. 8, 2021, 9:35 p.m. This repo has been linked 13 different CVEs too.

None

Updated: 1 year, 1 month ago
17 stars 10 fork 10 watcher
Born at : Jan. 2, 2021, 10:19 p.m. This repo has been linked 1050 different CVEs too.

None

Updated: 1 month ago
82 stars 32 fork 32 watcher
Born at : Oct. 2, 2020, 2:49 p.m. This repo has been linked 1111 different CVEs too.

An exploit for CVE-2019-17026. It pops xcalc and was tested on Ubuntu (x64).

HTML

Updated: 1 month, 1 week ago
48 stars 14 fork 14 watcher
Born at : Aug. 27, 2020, 7:32 p.m. This repo has been linked 2 different CVEs too.

Script in PowerShell to detect vulnerable versions of Mozilla Firefox in a Windows domain.

PowerShell

Updated: 4 years, 6 months ago
1 stars 0 fork 0 watcher
Born at : Jan. 13, 2020, 5:03 p.m. This repo has been linked 1 different CVEs too.

Lansweeper SQL reports.

TSQL

Updated: 4 years, 8 months ago
0 stars 0 fork 0 watcher
Born at : Jan. 10, 2020, 12:30 p.m. This repo has been linked 1 different CVEs too.

The Unofficial Incomplete Spidermonkey Bibliography

Ruby

Updated: 2 months ago
16 stars 4 fork 4 watcher
Born at : Oct. 23, 2018, 7:36 p.m. This repo has been linked 3 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-2019-17026 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-17026 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]

    Nov. 16, 2022

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html No Types Assigned http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1607443 Permissions Required https://bugzilla.mozilla.org/show_bug.cgi?id=1607443 Issue Tracking, Permissions Required
    Changed Reference Type https://security.gentoo.org/glsa/202003-02 No Types Assigned https://security.gentoo.org/glsa/202003-02 Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4335-1/ No Types Assigned https://usn.ubuntu.com/4335-1/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
  • CVE Modified by [email protected]

    May. 13, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 29, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4335-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 12, 2020

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202003-02 [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 04, 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:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1607443 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1607443 Permissions Required
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2020-03/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2020-03/ Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2020-04/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2020-04/ Vendor Advisory
    Added CWE NIST CWE-843
    Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 72.0.1 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 68.4.1 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 68.4.1
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-2019-17026 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-2019-17026 weaknesses.

Exploit Prediction

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

47.10 }} 2.28%

score

0.97529

percentile

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