CVE-2021-23999

CVE Details

Release Date:	2021-06-24
Impact:	None	What is this?

Description

If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

See more information about CVE-2021-23999 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:	8.8
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	Required
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (firefox)	ELSA-2021-1363	2021-04-27
Oracle Linux version 7 (thunderbird)	ELSA-2021-1350	2021-04-27
Oracle Linux version 8 (firefox)	ELSA-2021-1360	2021-04-27
Oracle Linux version 8 (thunderbird)	ELSA-2021-1353	2021-04-27