CVE-2019-9792

Spidermonkey - IonMonkey Leaks JS_OPTIMIZED_OUT Magic Value to Script

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

El compilador IonMonkey just-in-time (JIT) puede filtrar un valor mágico interno JS_OPTIMIZED_OUT para la ejecución script durante un rescate. JavaScript puede utilizar este valor mágico para lograr daños en la memoria, lo que lleva a un fallo potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird versión <60.6, Firefox ESR versión <60.6 y Firefox versión <66.

Spidermonkey IonMonkey can, during a bailout, leak an internal JS_OPTIMIZED_OUT magic value to the running script. This magic value can then be used to achieve memory corruption.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

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:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-03-14 CVE Reserved
2019-03-20 CVE Published
2019-05-29 First Exploit
2024-08-04 CVE Updated
2024-09-16 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (10)

URL	Tag	Source

URL	Date	SRC
https://www.exploit-db.com/exploits/46939	2019-05-29
http://packetstormsecurity.com/files/153106/Spidermonkey-IonMonkey-JS_OPTIMIZED_OUT-Value-Leak.html	2024-08-04
https://bugzilla.mozilla.org/show_bug.cgi?id=1532599	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2019:0966	2022-03-30
https://access.redhat.com/errata/RHSA-2019:1144	2022-03-30
https://www.mozilla.org/security/advisories/mfsa2019-07	2022-03-30
https://www.mozilla.org/security/advisories/mfsa2019-08	2022-03-30
https://www.mozilla.org/security/advisories/mfsa2019-11	2022-03-30
https://access.redhat.com/security/cve/CVE-2019-9792	2019-05-13
https://bugzilla.redhat.com/show_bug.cgi?id=1690677	2019-05-13

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"				< 66.0 Search vendor "Mozilla" for product "Firefox" and version " < 66.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 60.6.0 Search vendor "Mozilla" for product "Firefox Esr" and version " < 60.6.0"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 60.6.0 Search vendor "Mozilla" for product "Thunderbird" and version " < 60.6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.1 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.1"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.2 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				8.4 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				8.2 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				8.4 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				8.2 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				8.4 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.4"		-		Affected