Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2018-18955 | First vendor Publication | 2018-11-16 |
| Vendor | Cve | Last vendor Modification | 2020-08-24 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 7 | ||
| Base Score | 7 | Environmental Score | 7 |
| impact SubScore | 5.9 | Temporal Score | 7 |
| Exploitabality Sub Score | 1 | ||
| Attack Vector | Local | Attack Complexity | High |
| 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:M/Au:N/C:P/I:P/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 4.4 | Attack Range | Local |
| Cvss Impact Score | 6.4 | Attack Complexity | Medium |
| Cvss Expoit Score | 3.4 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| In the Linux kernel 4.15.x through 4.19.x before 4.19.2, map_write() in kernel/user_namespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAP_SYS_ADMIN in an affected user namespace can bypass access controls on resources outside the namespace, as demonstrated by reading /etc/shadow. This occurs because an ID transformation takes place properly for the namespaced-to-kernel direction but not for the kernel-to-namespaced direction. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18955 |
CPE : Common Platform Enumeration
Metasploit Database
| id | Description |
|---|---|
| 2018-11-15 | Linux Nested User Namespace idmap Limit Local Privilege Escalation |
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2024-03-12 12:51:07 |
|
| 2024-02-02 01:55:07 |
|
| 2024-02-01 12:15:11 |
|
| 2023-12-29 01:49:21 |
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| 2023-11-22 01:48:51 |
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| 2023-09-05 12:52:59 |
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| 2023-09-05 01:14:55 |
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| 2023-09-02 12:52:27 |
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| 2023-09-02 01:15:12 |
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| 2023-08-12 12:56:14 |
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| 2023-08-12 01:14:28 |
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| 2023-08-11 12:50:17 |
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| 2023-08-11 01:14:52 |
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| 2023-08-06 12:48:47 |
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| 2023-08-06 01:14:26 |
|
| 2023-08-04 12:49:01 |
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| 2023-08-04 01:14:32 |
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| 2023-07-14 12:49:02 |
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| 2023-07-14 01:14:32 |
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| 2023-06-06 12:43:32 |
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| 2023-03-29 01:50:30 |
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| 2023-03-28 12:14:51 |
|
| 2023-01-25 01:40:54 |
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| 2022-10-11 12:43:54 |
|
| 2022-10-11 01:14:31 |
|
| 2022-09-09 01:39:20 |
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| 2022-03-11 01:36:15 |
|
| 2022-02-01 01:34:04 |
|
| 2021-12-11 12:34:47 |
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| 2021-12-11 01:32:53 |
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| 2021-08-19 12:30:13 |
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| 2021-05-25 12:28:39 |
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| 2021-05-04 13:12:01 |
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| 2021-04-22 02:25:42 |
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| 2021-03-27 01:25:50 |
|
| 2020-12-12 12:22:39 |
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| 2020-12-05 12:24:04 |
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| 2020-09-25 01:21:54 |
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| 2020-09-03 01:22:39 |
|
| 2020-08-11 12:21:53 |
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| 2020-08-08 01:21:44 |
|
| 2020-08-07 12:22:08 |
|
| 2020-08-07 01:22:51 |
|
| 2020-08-01 12:21:45 |
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| 2020-07-30 01:22:30 |
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| 2020-05-24 01:25:12 |
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| 2020-05-23 13:17:10 |
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| 2020-05-23 02:14:29 |
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| 2020-05-23 01:11:46 |
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| 2019-04-22 21:19:17 |
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| 2019-04-16 13:18:57 |
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| 2019-04-09 09:19:00 |
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| 2018-12-19 21:19:40 |
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| 2018-12-04 17:19:50 |
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| 2018-12-01 17:19:00 |
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| 2018-11-30 17:19:02 |
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| 2018-11-18 17:19:15 |
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| 2018-11-17 17:18:58 |
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| 2018-11-17 00:21:25 |
|
