Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 60.4.0 |
| Mozilla | Thunderbird | < 60.4.0 |
| Debian | Debian Linux | 8.0 |
| Canonical | Ubuntu Linux | 14.04 |
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.6 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Workstation | 6.0 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/106168Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:3831Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3833Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0159Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0160Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1504452Issue TrackingPermissions RequiredVendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/12/msg00002.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/201903-04Third 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-4354Third Party Advisory
- https://www.debian.org/security/2019/dsa-4362Third Party 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/Vendor Advisory
FAQ
What is CVE-2018-18493?
CVE-2018-18493 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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...
How severe is CVE-2018-18493?
CVE-2018-18493 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2018-18493?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Thunderbird, Debian Debian Linux, Canonical Ubuntu Linux, Redhat Enterprise Linux Desktop.