Vulnerability Details : CVE-2018-18500
A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
Vulnerability category: Memory Corruption
Products affected by CVE-2018-18500
- 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-2018-18500
9.92%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 95 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-18500
| 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-2018-18500
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The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-18500
-
https://security.gentoo.org/glsa/201904-07
Mozilla Thunderbird and Firefox: Multiple vulnerabilities (GLSA 201904-07) — Gentoo security
-
https://access.redhat.com/errata/RHSA-2019:0218
RHSA-2019:0218 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://www.debian.org/security/2019/dsa-4376
Debian -- Security Information -- DSA-4376-1 firefox-esrThird Party Advisory
-
https://usn.ubuntu.com/3874-1/
USN-3874-1: Firefox vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://www.securityfocus.com/bid/106781
Mozilla Firefox Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
-
https://usn.ubuntu.com/3897-1/
USN-3897-1: Thunderbird vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html
[security-announce] openSUSE-SU-2019:1758-1: important: Security update
-
https://www.mozilla.org/security/advisories/mfsa2019-01/
Security vulnerabilities fixed in Firefox 65 — MozillaVendor Advisory
-
https://access.redhat.com/errata/RHSA-2019:0269
RHSA-2019:0269 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html
[SECURITY] [DLA 1648-1] firefox-esr security updateMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:0270
RHSA-2019:0270 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:0219
RHSA-2019:0219 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2019-03/
Security vulnerabilities fixed in Thunderbird 60.5 — MozillaVendor Advisory
-
https://www.debian.org/security/2019/dsa-4392
Debian -- Security Information -- DSA-4392-1 thunderbirdThird Party Advisory
-
https://security.gentoo.org/glsa/201903-04
Mozilla Firefox: Multiple vulnerabilities (GLSA 201903-04) — Gentoo securityThird Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2019-02/
Security vulnerabilities fixed in Firefox ESR 60.5 — MozillaVendor Advisory
-
https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html
[SECURITY] [DLA 1678-1] thunderbird security updateMailing List;Third Party Advisory
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