Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2020-13131 | First vendor Publication | 2020-07-09 |
| Vendor | Cve | Last vendor Modification | 2020-07-16 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N | |||
|---|---|---|---|
| Overall CVSS Score | 4.3 | ||
| Base Score | 4.3 | Environmental Score | 4.3 |
| impact SubScore | 3.6 | Temporal Score | 4.3 |
| Exploitabality Sub Score | 0.7 | ||
| Attack Vector | Physical | Attack Complexity | Low |
| Privileges Required | None | User Interaction | Required |
| Scope | Unchanged | Confidentiality Impact | High |
| Integrity Impact | None | Availability Impact | None |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:L/AC:M/Au:N/C:P/I:N/A:N) | |||
|---|---|---|---|
| Cvss Base Score | 1.9 | Attack Range | Local |
| Cvss Impact Score | 2.9 | Attack Complexity | Medium |
| Cvss Expoit Score | 3.4 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| An issue was discovered in Yubico libykpiv before 2.1.0. lib/util.c in this library (which is included in yubico-piv-tool) does not properly check embedded length fields during device communication. A malicious PIV token can misreport the returned length fields during RSA key generation. This will cause stack memory to be copied into heap allocated memory that gets returned to the caller. The leaked memory could include PINs, passwords, key material, and other sensitive information depending on the integration. During further processing by the caller, this information could leak across trust boundaries. Note that RSA key generation is triggered by the host and cannot directly be triggered by the token. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13131 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-125 | Out-of-bounds Read |
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Application | 1 | |
| Application | 1 |
Sources (Detail)
| Source | Url |
|---|---|
| CONFIRM | https://www.yubico.com/products/services-software/download/smart-card-drivers... |
| MISC | https://blog.inhq.net/posts/yubico-libykpiv-vuln/ |
Alert History
| Date | Informations |
|---|---|
| 2021-05-04 13:45:35 |
|
| 2021-04-22 02:57:37 |
|
| 2020-07-17 00:22:48 |
|
| 2020-07-10 00:22:44 |
|
