CVE-2018-12387

MEDIUM

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.

References

http://www.securityfocus.com/bid/105460

http://www.securitytracker.com/id/1041770

https://access.redhat.com/errata/RHSA-2018:2881

https://access.redhat.com/errata/RHSA-2018:2884

https://bugzilla.mozilla.org/show_bug.cgi?id=1493903

https://security.gentoo.org/glsa/201810-01

https://usn.ubuntu.com/3778-1/

https://www.debian.org/security/2018/dsa-4310

https://www.mozilla.org/security/advisories/mfsa2018-24/

Details

Source: MITRE

Published: 2018-10-18

Updated: 2018-12-06

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 6.4

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P

Impact Score: 4.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Impact Score: 5.2

Exploitability Score: 3.9

Severity: CRITICAL