critical
CVE-2018-18493
Mozilla: Buffer overflow in accelerated 2D canvas with Skia
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by NVD, Amazon. Rated lower by Red Hat (high), Oracle (high), Ubuntu (medium).
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.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 2 | thunderbird, thunderbird-debuginfo | 60.5.0-1.amzn2.0.1 |
| debian 11 | firefox-esr, thunderbird | 60.4.0esr-1 and 1 more |
| debian 12 | firefox-esr, thunderbird | 60.4.0esr-1 and 1 more |
| debian 13 | firefox-esr, thunderbird | 60.4.0esr-1 and 1 more |
| debian 14 | firefox-esr, thunderbird | 60.4.0esr-1 and 1 more |
| debian 8 | firefox-esr, thunderbird | 60.4.0esr-1~deb8u1 and 1 more |
| debian 9 | firefox-esr, thunderbird | 60.4.0esr-1~deb9u1 and 1 more |
| echo | firefox-esr, thunderbird | 60.4.0esr-1 and 1 more |
| Oracle Linux 6 | firefox, thunderbird | 60.4.0-1.0.1.el6 |
| Oracle Linux 7 | firefox, thunderbird | 60.4.0-1.0.1.el7 and 1 more |
| ubuntu 14.04 | firefox, thunderbird | 64.0+build3-0ubuntu0.14.04.1 and 1 more |
| ubuntu 16.04 | firefox, thunderbird | 64.0+build3-0ubuntu0.16.04.1 and 1 more |
Show all 28 entries from 14 sources
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 2 | thunderbird | 60.5.0-1.amzn2.0.1 |
| amazon linux 2 | thunderbird-debuginfo | 60.5.0-1.amzn2.0.1 |
| debian 11 | firefox-esr | 60.4.0esr-1 |
| debian 11 | thunderbird | 1:60.4.0-1 |
| debian 12 | firefox-esr | 60.4.0esr-1 |
| debian 12 | thunderbird | 1:60.4.0-1 |
| debian 13 | firefox-esr | 60.4.0esr-1 |
| debian 13 | thunderbird | 1:60.4.0-1 |
| debian 14 | firefox-esr | 60.4.0esr-1 |
| debian 14 | thunderbird | 1:60.4.0-1 |
| debian 8 | firefox-esr | 60.4.0esr-1~deb8u1 |
| debian 8 | thunderbird | 1:60.4.0-1~deb8u1 |
| debian 9 | firefox-esr | 60.4.0esr-1~deb9u1 |
| debian 9 | thunderbird | 1:60.4.0-1~deb9u1 |
| echo | firefox-esr | 60.4.0esr-1 |
| echo | thunderbird | 1:60.4.0-1 |
| Oracle Linux 6 | firefox | 60.4.0-1.0.1.el6 |
| Oracle Linux 6 | thunderbird | 60.4.0-1.0.1.el6 |
| Oracle Linux 7 | firefox | 60.4.0-1.0.1.el7 |
| Oracle Linux 7 | thunderbird | 60.4.0-1.0.1.el7_6 |
| ubuntu 14.04 | firefox | 64.0+build3-0ubuntu0.14.04.1 |
| ubuntu 14.04 | thunderbird | 1:60.4.0+build2-0ubuntu0.14.04.1 |
| ubuntu 16.04 | firefox | 64.0+build3-0ubuntu0.16.04.1 |
| ubuntu 16.04 | thunderbird | 1:60.4.0+build2-0ubuntu0.16.04.1 |
| ubuntu 18.04 | firefox | 64.0+build3-0ubuntu0.18.04.1 |
| ubuntu 18.04 | thunderbird | 1:60.4.0+build2-0ubuntu0.18.04.1 |
| ubuntu 18.10 | firefox | 64.0+build3-0ubuntu0.18.10.1 |
| ubuntu 18.10 | thunderbird | 1:60.4.0+build2-0ubuntu0.18.10.1 |
References
- http://www.securityfocus.com/bid/106168
- https://access.redhat.com/errata/RHSA-2018:3831
- https://access.redhat.com/errata/RHSA-2018:3833
- https://access.redhat.com/errata/RHSA-2019:0159
- https://access.redhat.com/errata/RHSA-2019:0160
- https://access.redhat.com/security/cve/CVE-2018-18493
- https://bugzilla.mozilla.org/show_bug.cgi?id=1504452
- https://linux.oracle.com/cve/CVE-2018-18493.html
All 25 references
- https://linux.oracle.com/errata/ELSA-2019-0160.html
- https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-18493
- https://security.gentoo.org/glsa/201903-04
- https://ubuntu.com/security/notices/USN-3844-1
- https://ubuntu.com/security/notices/USN-3868-1
- https://usn.ubuntu.com/3844-1/
- https://usn.ubuntu.com/3868-1/
- https://www.cve.org/CVERecord?id=CVE-2018-18493
- https://www.debian.org/security/2018/dsa-4354
- https://www.debian.org/security/2019/dsa-4362
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/#CVE-2018-18493
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18493
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-31/#CVE-2018-18493
- https://www.mozilla.org/security/advisories/mfsa2018-29/
- https://www.mozilla.org/security/advisories/mfsa2018-30/
- https://www.mozilla.org/security/advisories/mfsa2018-31/