VDB
DEBIAN-CVE-2020-12403
DEBIAN-CVE-2020-12403
PUBLISHED
CVSS 9.100000381469727 CRITICAL
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.
Risk Scores
CVSS 3.1
9.100000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | nss | 0, 0, 0 |
| Debian:11 | nss | 0, 0, 0 |
| Debian:13 | nss | 0, 0, 0 |
| Debian:14 | nss | 0, 0, 0 |
Timeline
- May 27, 2021 CVE Published
- Apr 28, 2026 CVE Updated