CVE-2021-23953

CVE Details

Release Date:	2021-02-26
Impact:	None	What is this?

Description

If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

See more information about CVE-2021-23953 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:	4.3
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	Required
Scope:	Unchanged
Confidentiality Impact:	Low
Integrity Impact:	None
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (firefox)	ELSA-2021-0290	2021-01-28
Oracle Linux version 7 (thunderbird)	ELSA-2021-0297	2021-01-29
Oracle Linux version 8 (firefox)	ELSA-2021-0288	2021-01-28
Oracle Linux version 8 (thunderbird)	ELSA-2021-0298	2021-01-29