CVEvulnerability
CVE-2020-12403
9.1 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2021-05-27
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- CVSS 2.0 ([email protected])
- 6.4 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:P
- Weaknesses
- CWE-125
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.
Affected configurations
• mozilla nss (< 3.55)
Related
Weakness · CWE (1)
- CWE-125 Out-of-bounds Read weakness
References
- 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 lists.debian.org
- https://security.netapp.com/advisory/ntap-20230324-0006/ security.netapp.com
- 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 lists.debian.org
- https://security.netapp.com/advisory/ntap-20230324-0006/ security.netapp.com