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.

• CWE-20

• http://www.securityfocus.com/bid/105460Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1041770Third Party Advisory, VDB 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=1493903Exploit, Issue Tracking, Patch, Vendor Advisory
• 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 Advisory, VDB Entry
• http://www.securitytracker.com/id/1041770Third Party Advisory, VDB 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=1493903Exploit, Issue Tracking, Patch, Vendor Advisory
• 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

Published

Oct 18, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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