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
Products affected by CVE-2019-9792
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-9792
17.25%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 96 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-9792
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
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
|
NIST |
CWE ids for CVE-2019-9792
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-9792
-
http://packetstormsecurity.com/files/153106/Spidermonkey-IonMonkey-JS_OPTIMIZED_OUT-Value-Leak.html
Spidermonkey IonMonkey JS_OPTIMIZED_OUT Value Leak ≈ Packet StormExploit;Third Party Advisory;VDB Entry
-
https://access.redhat.com/errata/RHSA-2019:0966
RHSA-2019:0966 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2019-08/
Security vulnerabilities fixed in Firefox ESR 60.6 — MozillaVendor Advisory
-
https://access.redhat.com/errata/RHSA-2019:1144
RHSA-2019:1144 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1532599
Access DeniedExploit;Issue Tracking;Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2019-11/
Security vulnerabilities fixed in Thunderbird 60.6 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2019-07/
Security vulnerabilities fixed in Firefox 66 — MozillaVendor Advisory
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