CVE-2020-12403

CVE Details

Release Date:

2021-05-27

Description

A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS in versions before 3.55. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from this vulnerability is to confidentiality and system availability.

See more information about CVE-2020-12403 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:	9.1	Base Metrics:	AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Access Vector:	Network	Attack Complexity:	Low
Privileges Required:	None	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	High
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (nspr)	ELSA-2020-4076	2020-10-08
Oracle Linux version 7 (nss)	ELSA-2020-4076	2020-10-08
Oracle Linux version 7 (nss-softokn)	ELSA-2020-4076	2020-10-08
Oracle Linux version 7 (nss-util)	ELSA-2020-4076	2020-10-08
Oracle Linux version 8 (nss)	ELSA-2021-0538	2021-02-17

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