CVE-2018-18493: Buffer Overflow
First published: Tue Dec 11 2018(Updated: )
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.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Thunderbird | <60.4 | 60.4 |
| Firefox | <64 | 64 |
| Firefox ESR | <60.4 | 60.4 |
| Firefox | <64.0 | |
| Firefox ESR | <60.4.0 | |
| Thunderbird | <60.4.0 | |
| Debian Linux | =8.0 | |
| Debian Linux | =9.0 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =18.10 | |
| Red Hat Enterprise Linux Desktop | =6.0 | |
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux Server | =6.0 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Server | =7.6 | |
| Red Hat Enterprise Linux Server | =7.6 | |
| Red Hat Enterprise Linux Server | =7.6 | |
| Red Hat Enterprise Linux Workstation | =6.0 | |
| Red Hat Enterprise Linux Workstation | =7.0 | |
| debian/firefox | 137.0.1-1 | |
| debian/firefox-esr | 115.14.0esr-1~deb11u1 128.9.0esr-1~deb11u1 128.8.0esr-1~deb12u1 128.9.0esr-1~deb12u1 128.9.0esr-2 | |
| debian/thunderbird | 1:115.12.0-1~deb11u1 1:128.9.0esr-1~deb11u1 1:128.8.0esr-1~deb12u1 1:128.9.0esr-1~deb12u1 1:128.9.0esr-1 |
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Reference Links
- http://www.securityfocus.com/bid/106168
- https://bugzilla.mozilla.org/show_bug.cgi?id=1504452
- https://www.mozilla.org/security/advisories/mfsa2018-29/
- https://www.mozilla.org/security/advisories/mfsa2018-30/
- https://www.mozilla.org/security/advisories/mfsa2018-31/
- https://www.debian.org/security/2018/dsa-4354
- https://www.debian.org/security/2019/dsa-4362
- https://security.gentoo.org/glsa/201903-04
- https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html
- 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://usn.ubuntu.com/3844-1/
- https://usn.ubuntu.com/3868-1/
- https://launchpad.net/bugs/cve/CVE-2018-18493
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18493
- https://bugzilla.redhat.com/show_bug.cgi?id=1658400
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-31/
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/#CVE-2018-12407
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/#CVE-2018-18493
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-31/#CVE-2018-18493
- https://security-tracker.debian.org/tracker/CVE-2018-18493
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18493
- https://nvd.nist.gov/vuln/detail/CVE-2018-18493
- https://ubuntu.com/security/CVE-2018-18493
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is CVE-2018-18493?
CVE-2018-18493 is a vulnerability in the Skia library that can result in a buffer overflow during buffer offset calculations with hardware accelerated canvas 2D actions.
Which software versions are affected by CVE-2018-18493?
Firefox ESR versions prior to 60.4 and Thunderbird versions prior to 60.4 are affected by CVE-2018-18493.
How severe is CVE-2018-18493?
CVE-2018-18493 has a severity rating of 9.8, which is considered critical.
What is the remedy for CVE-2018-18493?
To fix CVE-2018-18493, you should update to Thunderbird version 60.4 or newer, or Firefox ESR version 60.4 or newer.
Where can I find more information about CVE-2018-18493?
You can find more information about CVE-2018-18493 on the Mozilla security advisories page and the bugzilla.mozilla.org page.
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