CVE-2018-18498

high-risk
Published 2019-02-28

A potential vulnerability leading to an integer overflow can occur during buffer size calculations for images when a raw value is used instead of the checked value. This leads to a possible out-of-bounds write. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

Do I need to act?

~
7.8% 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
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (18)

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=1500011
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
61
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 10/34 · Low
Exposure 19/34 · Moderate