CVE-2019-11707

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

Act

*SSVC

Descriptions

A type confusion vulnerability can occur when manipulating JavaScript objects due to issues in Array.pop. This can allow for an exploitable crash. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 60.7.1, Firefox < 67.0.3, and Thunderbird < 60.7.2.

Se puede producir una vulnerabilidad de tipo confusión cuando se manipulan objetos de JavaScript debido a problemas en Array.pop. Esto puede permitir un accidente explotable. Somos conscientes de los ataques dirigidos en la naturaleza abusando de este fallo. Esta vulnerabilidad afecta a Firefox ESR anterior a la versión 60.7.1, Firefox anterior a la versión 67.0.3 y Thunderbird anterior a la versión 60.7.2.

A type confusion bug was discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could exploit this by causing a denial of service, or executing arbitrary code. It was discovered that a sandboxed child process could open arbitrary web content in the parent process via the Prompt:Open IPC message. When combined with another vulnerability, an attacker could potentially exploit this to execute arbitrary code. Various other issues were also addressed.

Mozilla Firefox and Thunderbird contain a type confusion vulnerability that can occur when manipulating JavaScript objects due to issues in Array.pop, allowing for an exploitable crash.

*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

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Act

Exploitation

Active

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2019-05-03 CVE Reserved
2019-06-19 CVE Published
2019-06-25 First Exploit
2022-05-23 Exploited in Wild
2022-06-13 KEV Due Date
2025-02-07 CVE Updated
2025-03-30 EPSS Updated

CWE

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

CAPEC

References (11)

URL	Tag	Source

URL	Date	SRC
https://packetstorm.news/files/id/165816	2022-02-02
https://packetstorm.news/files/id/153422	2019-06-25
https://www.exploit-db.com/exploits/47038	2019-06-26
https://www.exploit-db.com/exploits/50691	2022-02-02
https://github.com/vigneshsrao/CVE-2019-11707	2019-08-18
https://github.com/flabbergastedbd/cve-2019-11707	2023-09-28

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/201908-12	2023-01-31
https://www.mozilla.org/security/advisories/mfsa2019-18	2023-01-31
https://www.mozilla.org/security/advisories/mfsa2019-20	2023-01-31
https://access.redhat.com/security/cve/CVE-2019-11707	2019-07-08
https://bugzilla.redhat.com/show_bug.cgi?id=1721789	2019-07-08

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"				< 60.7.3 Search vendor "Mozilla" for product "Firefox" and version " < 60.7.3"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 60.7.1 Search vendor "Mozilla" for product "Firefox Esr" and version " < 60.7.1"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 60.7.2 Search vendor "Mozilla" for product "Thunderbird" and version " < 60.7.2"		-		Affected