CVE-2020-12403

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.

CVSS v3 9.1 CRITICAL
CVSS v2.0 6.4 MEDIUM

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

6.4^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:P

Exploitability : 10.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1868931	Issue Tracking Patch Third Party Advisory
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.55_release_notes	Release Notes Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html
https://security.netapp.com/advisory/ntap-20230324-0006/

Configurations

Configuration 1 (hide)

cpe:2.3:a:mozilla:nss:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-05-27 19:15

Updated : 2024-02-28 18:28

NVD link : CVE-2020-12403

Mitre link : CVE-2020-12403

CVE.ORG link : CVE-2020-12403

JSON object : View

Products Affected

mozilla

nss

CWE

CWE-125

Out-of-bounds Read

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