CVE-2021-43539

CVE Details

Release Date:

2021-12-08

Description

Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

See more information about CVE-2021-43539 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:	8.8	Base Metrics:	AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Access 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-2021-5014	2021-12-08
Oracle Linux version 7 (thunderbird)	ELSA-2021-5046	2021-12-10
Oracle Linux version 8 (firefox)	ELSA-2021-5013	2021-12-09
Oracle Linux version 8 (thunderbird)	ELSA-2021-5045	2021-12-10

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