Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2021-3493 | First vendor Publication | 2021-04-17 |
| Vendor | Cve | Last vendor Modification | 2023-07-07 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 7.8 | ||
| Base Score | 7.8 | Environmental Score | 7.8 |
| impact SubScore | 5.9 | Temporal Score | 7.8 |
| Exploitabality Sub Score | 1.8 | ||
| Attack Vector | Local | Attack Complexity | Low |
| Privileges Required | Low | 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:L/AC:L/Au:N/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 7.2 | Attack Range | Local |
| Cvss Impact Score | 10 | Attack Complexity | Low |
| Cvss Expoit Score | 3.9 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an underlying file system. Due to the combination of unprivileged user namespaces along with a patch carried in the Ubuntu kernel to allow unprivileged overlay mounts, an attacker could use this to gain elevated privileges. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3493 |
CPE : Common Platform Enumeration
Metasploit Database
| id | Description |
|---|---|
| 2021-04-12 | 2021 Ubuntu Overlayfs LPE |
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2023-12-22 02:16:02 |
|
| 2023-07-08 00:28:25 |
|
| 2023-03-30 02:07:47 |
|
| 2022-10-27 17:27:47 |
|
| 2021-12-16 21:23:15 |
|
| 2021-12-11 01:49:24 |
|
| 2021-12-04 00:23:14 |
|
| 2021-12-02 21:22:54 |
|
| 2021-05-31 21:23:13 |
|
| 2021-05-04 14:09:58 |
|
| 2021-05-04 13:24:51 |
|
| 2021-05-04 05:22:51 |
|
| 2021-04-23 01:10:32 |
|
| 2021-04-19 17:22:59 |
|
| 2021-04-17 12:37:39 |
|
