CVE-2020-12403

CRITICAL Year: 2020
CVSS v3 Score
9.1
Critical
CVSS v2 Score
6.4
Medium
Weakness Type
CWE-125
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Vulnerability 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.

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