CVE-2021-38503

CVE Details

Release Date:

2021-12-08

Description

The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

See more information about CVE-2021-38503 from MITRE CVE dictionary and NIST NVD

CVSS v3.0 metrics

NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score:	10	Base Metrics:	AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Access Vector:	Network	Attack Complexity:	Low
Privileges Required:	None	User Interaction:	None
Scope:	Changed	Confidentiality Impact:	High
Integrity Impact:	High	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (firefox)	ELSA-2021-4116	2021-11-04
Oracle Linux version 7 (thunderbird)	ELSA-2021-4134	2021-11-05
Oracle Linux version 8 (firefox)	ELSA-2021-4123	2021-11-04
Oracle Linux version 8 (thunderbird)	ELSA-2021-4130	2021-11-05

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team