CVE-2020-12403
CVSS V2 Medium 6.4
CVSS V3 Critical 9.1
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.
Overview
- CVE ID
- CVE-2020-12403
- Assigner
- security@mozilla.org
- Vulnerability Status
- Modified
- Published Version
- 2021-05-27T19:15:07
- Last Modified Date
- 2023-03-24T16:15:07
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:mozilla:nss:*:*:*:*:*:*:*:* | 1 | OR | 3.55 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 6.4
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.1
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| 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/ |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-12403 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12403 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:12:14 | Added to TrackCVE | |||
| 2022-12-05 03:10:46 | 2021-05-27T19:15Z | 2021-05-27T19:15:07 | CVE Published Date | updated |
| 2022-12-05 03:10:46 | 2021-06-09T14:42:50 | CVE Modified Date | updated | |
| 2022-12-05 03:10:46 | Analyzed | Vulnerability Status | updated | |
| 2023-02-20 18:10:10 | 2023-02-20T17:15:11 | CVE Modified Date | updated | |
| 2023-02-20 18:10:10 | Analyzed | Modified | Vulnerability Status | updated |
| 2023-02-20 18:10:11 | References | updated | ||
| 2023-03-27 16:12:37 | 2023-03-24T16:15:07 | CVE Modified Date | updated | |
| 2023-03-27 16:12:37 | References | updated |