Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2020-14382 | First vendor Publication | 2020-09-16 |
| Vendor | Cve | Last vendor Modification | 2023-11-07 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 | None | User Interaction | Required |
| 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 vulnerability was found in upstream release cryptsetup-2.2.0 where, there's a bug in LUKS2 format validation code, that is effectively invoked on every device/image presenting itself as LUKS2 container. The bug is in segments validation code in file 'lib/luks2/luks2_json_metadata.c' in function hdr_validate_segments(struct crypt_device *cd, json_object *hdr_jobj) where the code does not check for possible overflow on memory allocation used for intervals array (see statement "intervals = malloc(first_backup * sizeof(*intervals));"). Due to the bug, library can be *tricked* to expect such allocation was successful but for far less memory then originally expected. Later it may read data FROM image crafted by an attacker and actually write such data BEYOND allocated memory. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14382 |
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 | |
| Os | 1 | |
| Os | 2 | |
| Os | 1 |
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2023-11-07 21:36:48 |
|
| 2022-01-01 21:23:04 |
|
| 2021-05-04 13:46:09 |
|
| 2021-04-22 02:58:17 |
|
| 2020-09-26 05:22:46 |
|
| 2020-09-23 00:22:52 |
|
| 2020-09-20 09:22:45 |
|
| 2020-09-18 21:23:11 |
|
| 2020-09-16 21:23:12 |
|
