CVE-2018-18493

high-risk
Published 2019-02-28

A buffer overflow can occur in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

Do I need to act?

!
24.3% chance of exploitation in next 30 days
EPSS score — higher than 76% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (17)

Affected Vendors

Debian Redhat Mozilla Canonical

References (30)

Third Party Advisory http://www.securityfocus.com/bid/106168
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3831
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3833
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0159
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0160
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1504452
Mailing List https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html
Third Party Advisory https://security.gentoo.org/glsa/201903-04
Third Party Advisory https://usn.ubuntu.com/3844-1/
Third Party Advisory https://usn.ubuntu.com/3868-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4354
Third Party Advisory https://www.debian.org/security/2019/dsa-4362
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-29/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-30/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-31/
Third Party Advisory http://www.securityfocus.com/bid/106168
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3831
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3833
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0159
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0160
and 10 more references
66
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 15/34 · Moderate
Exposure 19/34 · Moderate