CVE-2019-17026

Mozilla Firefox And Thunderbird Type Confusion Vulnerability

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

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.

Una información de alias incorrecta en compilador IonMonkey JIT para establecer los elementos de la matriz podría conllevar a una confusión de tipo. Estamos conscientes de los ataques dirigidos "in the wild" abusando de este fallo. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 68.4.1, Thunderbird versiones anteriores a 68.4.1, y Firefox versiones anteriores a 72.0.1.

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

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-09-30 CVE Reserved
2020-01-09 CVE Published
2020-08-27 First Exploit
2021-11-03 Exploited in Wild
2022-05-03 KEV Due Date
2024-08-05 CVE Updated
2024-10-28 EPSS Updated

CWE

CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')

CAPEC

References (10)

URL	Tag	Source

URL	Date	SRC
https://www.exploit-db.com/exploits/49864	2021-05-13
https://github.com/maxpl0it/CVE-2019-17026-Exploit	2020-08-27
https://github.com/lsw29475/CVE-2019-17026	2021-02-24
http://packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.html	2024-08-05

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202003-02	2022-11-16
https://usn.ubuntu.com/4335-1	2022-11-16
https://www.mozilla.org/security/advisories/mfsa2020-03	2022-11-16
https://www.mozilla.org/security/advisories/mfsa2020-04	2022-11-16
https://access.redhat.com/security/cve/CVE-2019-17026	2020-01-30
https://bugzilla.redhat.com/show_bug.cgi?id=1789214	2020-01-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Firefox Search vendor "Mozilla" for product "Firefox"				< 72.0.1 Search vendor "Mozilla" for product "Firefox" and version " < 72.0.1"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 68.4.1 Search vendor "Mozilla" for product "Firefox Esr" and version " < 68.4.1"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 68.4.1 Search vendor "Mozilla" for product "Thunderbird" and version " < 68.4.1"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		esm		Affected