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CVE-2018-18493 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://access.redhat.com/errata/RHSA-2018:3831	CVE	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3833	CVE	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0159	CVE	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0160	CVE	Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1504452	CVE	Issue TrackingPermissions RequiredVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html	CVE	Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/201903-04	CVE	Third Party Advisory
https://usn.ubuntu.com/3844-1/	CVE	Third Party Advisory
https://usn.ubuntu.com/3868-1/	CVE	Third Party Advisory
https://www.debian.org/security/2018/dsa-4354	CVE	Third Party Advisory
https://www.debian.org/security/2019/dsa-4362	CVE	Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-29/	CVE	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2018-30/	CVE	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2018-31/	CVE	Vendor Advisory
http://www.securityfocus.com/bid/106168	CVE	Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:3831	[email protected]	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3833	[email protected]	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0159	[email protected]	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0160	[email protected]	Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1504452	[email protected]	Issue TrackingPermissions RequiredVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html	[email protected]	Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/201903-04	[email protected]	Third Party Advisory
https://usn.ubuntu.com/3844-1/	[email protected]	Third Party Advisory
https://usn.ubuntu.com/3868-1/	[email protected]	Third Party Advisory
https://www.debian.org/security/2018/dsa-4354	[email protected]	Third Party Advisory
https://www.debian.org/security/2019/dsa-4362	[email protected]	Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-29/	[email protected]	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2018-30/	[email protected]	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2018-31/	[email protected]	Vendor Advisory
http://www.securityfocus.com/bid/106168	[email protected]	Third Party AdvisoryVDB Entry

see all 30 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	[email protected]

Affected Products

Product	Versions
mozilla firefox	< 60.4.0 < 64.0
CPE cpe:2.3:a:mozilla:firefox:::::::: Remediation No remediation found in references.
mozilla thunderbird	< 60.4.0
CPE cpe:2.3:a:mozilla:thunderbird:::::::: Remediation No remediation found in references.
debian debian linux	8.0 9.0
CPE cpe:2.3:o:debian:debian_linux:8.0:::::::* cpe:2.3:o:debian:debian_linux:9.0:::::::* Remediation No remediation found in references.
canonical ubuntu linux	14.04 16.04 18.04 18.10
CPE cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts::: cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts::: cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts::: cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::* Remediation No remediation found in references.
redhat enterprise linux desktop	6.0 7.0
CPE cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:::::::* cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::* Remediation No remediation found in references.
redhat enterprise linux server	6.0 7.0
CPE cpe:2.3:o:redhat:enterprise_linux_server:6.0:::::::* cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::* Remediation No remediation found in references.
redhat enterprise linux server aus	7.6
CPE cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:::::::* Remediation No remediation found in references.
redhat enterprise linux server eus	7.6
CPE cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:::::::* Remediation No remediation found in references.
redhat enterprise linux server tus	7.6
CPE cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:::::::* Remediation No remediation found in references.
redhat enterprise linux workstation	6.0 7.0
CPE cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:::::::* cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::* Remediation No remediation found in references.

Change History

9 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 25, 2025	CPE Deprecation Remap	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Mar 11, 2019	Modified Analysis	[email protected]
Mar 11, 2019	CVE Modified	[email protected]
Mar 1, 2019	Modified Analysis	[email protected]
Mar 1, 2019	CVE Modified	[email protected]
Feb 28, 2019	Initial Analysis	[email protected]

CVE-2018-18493 Details

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Affected Products

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