Critical severity · published Oct 18, 2018
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
9.1
CVSS
9.6%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)9.6% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 60.2.2; before 62.0.3 · source: NVD
DL
Debian Linux · Debian
9.0 · source: NVD
EL
Enterprise Linux Desktop · Redhat
6.0; 7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
6.0; 7.0 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
7.6 · source: NVD
EL
Enterprise Linux Server Eus · Redhat
7.5; 7.6 · source: NVD
EL
Enterprise Linux Server Tus · Redhat
7.6 · source: NVD
EL
Enterprise Linux Workstation · Redhat
6.0; 7.0 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-12387
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-12387
Third Party Advisory
http://www.securityfocus.com/bid/105460
Third Party Advisory
http://www.securitytracker.com/id/1041770
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2881
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2884
Exploit
https://bugzilla.mozilla.org/show_bug.cgi?id=1493903
Third Party Advisory
https://security.gentoo.org/glsa/201810-01
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