Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.5 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Workstation | 6.0 |
| Debian | Debian Linux | 9.0 |
| Canonical | Ubuntu Linux | 14.04 |
| Mozilla | Firefox | < 60.2.2 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/105460Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041770Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:2881Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2884Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1493903ExploitIssue TrackingPatch
- https://security.gentoo.org/glsa/201810-01Third Party Advisory
- https://usn.ubuntu.com/3778-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4310Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2018-24/Vendor Advisory
- http://www.securityfocus.com/bid/105460Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041770Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:2881Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2884Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1493903ExploitIssue TrackingPatch
- https://security.gentoo.org/glsa/201810-01Third Party Advisory
FAQ
What is CVE-2018-12387?
CVE-2018-12387 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 addre...
How severe is CVE-2018-12387?
CVE-2018-12387 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2018-12387?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Server Tus.