CVE-2020-6821

CVE Details

Release Date:	2020-04-24
Impact:	None	What is this?

Description

When reading from areas partially or fully outside the source resource with WebGL's <code>copyTexSubImage</code> method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.

See more information about CVE-2020-6821 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:	7.5
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	None
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (firefox)	ELSA-2020-1429	2020-07-07
Oracle Linux version 6 (thunderbird)	ELSA-2020-1488	2020-07-07
Oracle Linux version 7 (firefox)	ELSA-2020-1420	2020-04-11
Oracle Linux version 7 (thunderbird)	ELSA-2020-1489	2020-04-17
Oracle Linux version 8 (firefox)	ELSA-2020-1406	2020-04-09
Oracle Linux version 8 (thunderbird)	ELSA-2020-1495	2020-04-18