Vulnerability Details : CVE-2018-18493
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.
Vulnerability category: Overflow
Exploit prediction scoring system (EPSS) score for CVE-2018-18493
Probability of exploitation activity in the next 30 days: 0.81%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 79 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2018-18493
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
nvd@nist.gov |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
nvd@nist.gov |
CWE ids for CVE-2018-18493
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The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-18493
-
https://www.mozilla.org/security/advisories/mfsa2018-29/
Security vulnerabilities fixed in Firefox 64 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2018-30/
Security vulnerabilities fixed in Firefox ESR 60.4 — MozillaVendor Advisory
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https://access.redhat.com/errata/RHSA-2019:0159
RHSA-2019:0159 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://www.debian.org/security/2018/dsa-4354
Debian -- Security Information -- DSA-4354-1 firefox-esrThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:0160
RHSA-2019:0160 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3831
RHSA-2018:3831 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html
[SECURITY] [DLA 1605-1] firefox-esr security updateMailing List;Third Party Advisory
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https://bugzilla.mozilla.org/show_bug.cgi?id=1504452
1504452 - (CVE-2018-18493) heap-buffer-overflow write in add_lineIssue Tracking;Permissions Required;Vendor Advisory
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https://www.debian.org/security/2019/dsa-4362
Debian -- Security Information -- DSA-4362-1 thunderbirdThird Party Advisory
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https://usn.ubuntu.com/3844-1/
USN-3844-1: Firefox vulnerabilities | Ubuntu security noticesThird Party Advisory
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https://security.gentoo.org/glsa/201903-04
Mozilla Firefox: Multiple vulnerabilities (GLSA 201903-04) — Gentoo securityThird Party Advisory
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https://usn.ubuntu.com/3868-1/
USN-3868-1: Thunderbird vulnerabilities | Ubuntu security noticesThird Party Advisory
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https://access.redhat.com/errata/RHSA-2018:3833
RHSA-2018:3833 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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http://www.securityfocus.com/bid/106168
Mozilla Firefox and Firefox ESR Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
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https://www.mozilla.org/security/advisories/mfsa2018-31/
Security vulnerabilities fixed in Thunderbird 60.4 — MozillaVendor Advisory
Products affected by CVE-2018-18493
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
- 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:*:*:*:*:*:*:*