CVE-2018-12359

high-risk
Published 2018-10-18

A buffer overflow can occur when rendering canvas content while adjusting the height and width of the canvas element dynamically, causing data to be written outside of the currently computed boundaries. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60, Thunderbird < 52.9, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61.

Do I need to act?

~
3.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Debian Redhat Mozilla Canonical

References (40)

Third Party Advisory http://www.securityfocus.com/bid/104555
Third Party Advisory http://www.securitytracker.com/id/1041193
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2112
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2113
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2251
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2252
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1459162
Mailing List https://lists.debian.org/debian-lts-announce/2018/06/msg00014.html
Mailing List https://lists.debian.org/debian-lts-announce/2018/07/msg00013.html
Third Party Advisory https://security.gentoo.org/glsa/201810-01
Third Party Advisory https://security.gentoo.org/glsa/201811-13
Third Party Advisory https://usn.ubuntu.com/3705-1/
Third Party Advisory https://usn.ubuntu.com/3714-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4235
Third Party Advisory https://www.debian.org/security/2018/dsa-4244
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-15/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-16/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-17/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-18/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-19/
and 20 more references
56
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 6/34 · Minimal
Exposure 20/34 · Moderate