Executive Summary
This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
| Informations | |||
|---|---|---|---|
| Name | CVE-2021-20305 | First vendor Publication | 2021-04-05 |
| Vendor | Cve | Last vendor Modification | 2023-11-07 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 8.1 | ||
| Base Score | 8.1 | Environmental Score | 8.1 |
| impact SubScore | 5.9 | Temporal Score | 8.1 |
| Exploitabality Sub Score | 2.2 | ||
| Attack Vector | Network | Attack Complexity | High |
| Privileges Required | None | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | High |
| Integrity Impact | High | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 6.8 | Attack Range | Network |
| Cvss Impact Score | 6.4 | Attack Complexity | Medium |
| Cvss Expoit Score | 8.6 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST DSA, EDDSA & ECDSA) result in the Elliptic Curve Cryptography point (ECC) multiply function being called with out-of-range scalers, possibly resulting in incorrect results. This flaw allows an attacker to force an invalid signature, causing an assertion failure or possible validation. The highest threat to this vulnerability is to confidentiality, integrity, as well as system availability. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20305 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-787 | Out-of-bounds Write (CWE/SANS Top 25) |
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Application | 1 | |
| Application | 1 | |
| Application | 1 | |
| Os | 2 | |
| Os | 1 | |
| Os | 2 |
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2023-11-07 21:35:17 |
|
| 2021-12-06 17:23:15 |
|
| 2021-10-23 00:23:17 |
|
| 2021-09-18 21:23:28 |
|
| 2021-06-19 09:22:54 |
|
| 2021-06-02 17:22:55 |
|
| 2021-06-01 12:38:04 |
|
| 2021-05-26 17:22:58 |
|
| 2021-05-04 14:08:42 |
|
| 2021-04-22 03:14:46 |
|
| 2021-04-13 00:22:55 |
|
| 2021-04-09 17:23:21 |
|
| 2021-04-06 17:23:17 |
|
| 2021-04-06 05:22:56 |
|
