CVE-2020-12403
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-12403
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12403.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2020-12403
- Downstream
- Related
- Published
- 2021-05-27T19:15:07Z
- Modified
- 2025-08-09T19:01:27Z
- Severity
-
- 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References