CVE-2018-12387
CVSS v3
9.1
CRITICAL
EPSS Score
33.4 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.
Technical details
- Published
- 2018-10-18
Frequently asked questions
What is CVE-2018-12387?
A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.
Is CVE-2018-12387 actively exploited?
Active exploitation of CVE-2018-12387 has not been confirmed. The EPSS score is 33.4%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-12387?
CVE-2018-12387 has a CVSS v3 base score of 9.1 (CRITICAL severity).
Is CVE-2018-12387 affecting your environment?
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