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
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:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-18493
1.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 85 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-18493
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
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
|
NIST |
CWE ids for CVE-2018-18493
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.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
-
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
-
https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html
[SECURITY] [DLA 1605-1] firefox-esr security updateMailing List;Third Party Advisory
-
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
-
https://www.debian.org/security/2019/dsa-4362
Debian -- Security Information -- DSA-4362-1 thunderbirdThird Party Advisory
-
https://usn.ubuntu.com/3844-1/
USN-3844-1: Firefox vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://security.gentoo.org/glsa/201903-04
Mozilla Firefox: Multiple vulnerabilities (GLSA 201903-04) — Gentoo securityThird Party Advisory
-
https://usn.ubuntu.com/3868-1/
USN-3868-1: Thunderbird vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3833
RHSA-2018:3833 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.securityfocus.com/bid/106168
Mozilla Firefox and Firefox ESR Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
-
https://www.mozilla.org/security/advisories/mfsa2018-31/
Security vulnerabilities fixed in Thunderbird 60.4 — MozillaVendor Advisory
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