CVE-2018-18500

CVE Details

Release Date:	2019-02-05
Impact:	Critical	What is this?

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.

See more information about CVE-2018-18500 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	9.8
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (firefox)	ELSA-2019-0218	2019-01-30
Oracle Linux version 6 (thunderbird)	ELSA-2019-0269	2019-02-04
Oracle Linux version 7 (firefox)	ELSA-2019-0219	2019-01-31
Oracle Linux version 7 (thunderbird)	ELSA-2019-0270	2019-02-04