CVE-2020-15669

Mozilla: Use-After-Free when aborting an operation

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.

Cuando se anula una operación, como una recuperación, puede ser eliminada una señal de cancelación mientras se alerta a los objetos que deben ser notificados. Esto resulta en un uso de la memoria previamente liberada y suponemos que con suficiente esfuerzo podría haber sido explotado para ejecutar código arbitrario. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 68.12 y Thunderbird versiones anteriores a 68.12

*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

2020-07-10 CVE Reserved
2020-08-26 CVE Published
2024-08-04 CVE Updated
2024-08-05 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.mozilla.org/security/advisories/mfsa2020-37	2020-10-02
https://www.mozilla.org/security/advisories/mfsa2020-40	2020-10-02
https://access.redhat.com/security/cve/CVE-2020-15669	2020-09-08
https://bugzilla.redhat.com/show_bug.cgi?id=1872532	2020-09-08

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 Esr Search vendor "Mozilla" for product "Firefox Esr"				< 68.12 Search vendor "Mozilla" for product "Firefox Esr" and version " < 68.12"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 68.12 Search vendor "Mozilla" for product "Thunderbird" and version " < 68.12"		-		Affected