Vulnerability Details : CVE-2019-9792

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.

Vulnerability category: Memory Corruption

Published 2019-04-26 17:29:02

Updated 2022-03-30 18:49:19

Source Mozilla Corporation

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2019-9792

Probability of exploitation activity in the next 30 days: 13.41%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 95 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2019-9792

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	[email protected]
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	[email protected]
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2019-9792

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

Assigned by: [email protected] (Primary)

References for CVE-2019-9792

http://packetstormsecurity.com/files/153106/Spidermonkey-IonMonkey-JS_OPTIMIZED_OUT-Value-Leak.html

Exploit;Third Party Advisory;VDB Entry
https://access.redhat.com/errata/RHSA-2019:0966

Third Party Advisory

CVEs referencing this url
https://www.mozilla.org/security/advisories/mfsa2019-08/

Vendor Advisory

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2019:1144

Third Party Advisory

CVEs referencing this url
https://bugzilla.mozilla.org/show_bug.cgi?id=1532599

Exploit;Issue Tracking;Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-11/

Vendor Advisory

CVEs referencing this url
https://www.mozilla.org/security/advisories/mfsa2019-07/

Vendor Advisory

CVEs referencing this url

Products affected by CVE-2019-9792

Redhat » Enterprise Linux » Version: 8.0
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux Eus » Version: 8.1
cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux Eus » Version: 8.2
cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux Eus » Version: 8.4
cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux Server Aus » Version: 8.2
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux Server Aus » Version: 8.4
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux Server Tus » Version: 8.2
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux Server Tus » Version: 8.4
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*
Matching versions
Mozilla » Firefox
Versions before (<) 66.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Matching versions
Mozilla » Thunderbird
Versions before (<) 60.6.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Matching versions
Mozilla » Firefox Esr
Versions before (<) 60.6.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Matching versions