CVE-2018-18500

CVSS V2 High 7.5 CVSS V3 Critical 9.8

Description

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.

Overview

CVE ID
CVE-2018-18500

Assigner
security@mozilla.org

Vulnerability Status
Modified

Published Version
2019-02-05T21:29:00

Last Modified Date
2019-04-02T07:29:06

Weakness Enumerations

CWE	URL
CWE-416	http://cwe.mitre.org/data/definitions/416.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
cpe:2.3:a:mozilla:firefox::::::::	1	OR	65.0
cpe:2.3:a:mozilla:firefox_esr::::::::	1	OR	60.5
cpe:2.3:a:mozilla:thunderbird::::::::	1	OR	60.5
cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:8.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:9.0:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_server:6.0:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
7.5

Severity
HIGH

Exploitability Score
10

Impact Score
6.4

CVSS Version 3

Version
3.0

Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
9.8

Base Severity
CRITICAL

Exploitability Score
3.9

Impact Score
5.9

References

Reference URL	Reference Tags
https://www.mozilla.org/security/advisories/mfsa2019-03/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-02/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-01/	Vendor Advisory
https://www.debian.org/security/2019/dsa-4376	Third Party Advisory
https://usn.ubuntu.com/3874-1/	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html	Mailing List Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0270	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0269	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0219	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0218	Third Party Advisory
http://www.securityfocus.com/bid/106781	Third Party Advisory VDB Entry
https://www.debian.org/security/2019/dsa-4392	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html	Mailing List Third Party Advisory
https://usn.ubuntu.com/3897-1/	Third Party Advisory
https://security.gentoo.org/glsa/201903-04	Third Party Advisory
https://security.gentoo.org/glsa/201904-07
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2018-18500
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18500

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 17:44:46				Added to TrackCVE
2022-12-03 17:09:51	2019-02-05T21:29Z	2019-02-05T21:29:00	CVE Published Date	updated
2022-12-03 17:09:51		2019-04-02T07:29:06	CVE Modified Date	updated
2022-12-03 17:09:51		Modified	Vulnerability Status	updated