High severity · published Oct 18, 2018
CVE-2018-12386
A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write
8.1
CVSS
13.5%
EPSS
No
On KEV
Description
A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered. 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:R/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)13.5% · higher than 96% 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-2018-12386
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-12386
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=1493900
Third Party Advisory
https://security.gentoo.org/glsa/201810-01
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