Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2020-15563 | First vendor Publication | 2020-07-07 |
| Vendor | Cve | Last vendor Modification | 2023-11-07 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 6.5 | ||
| Base Score | 6.5 | Environmental Score | 6.5 |
| impact SubScore | 4 | Temporal Score | 6.5 |
| Exploitabality Sub Score | 2 | ||
| Attack Vector | Local | Attack Complexity | Low |
| Privileges Required | Low | User Interaction | None |
| Scope | Changed | Confidentiality Impact | None |
| Integrity Impact | None | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:L/AC:M/Au:N/C:N/I:N/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 4.7 | Attack Range | Local |
| Cvss Impact Score | 6.9 | Attack Complexity | Medium |
| Cvss Expoit Score | 3.4 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| An issue was discovered in Xen through 4.13.x, allowing x86 HVM guest OS users to cause a hypervisor crash. An inverted conditional in x86 HVM guests' dirty video RAM tracking code allows such guests to make Xen de-reference a pointer guaranteed to point at unmapped space. A malicious or buggy HVM guest may cause the hypervisor to crash, resulting in Denial of Service (DoS) affecting the entire host. Xen versions from 4.8 onwards are affected. Xen versions 4.7 and earlier are not affected. Only x86 systems are affected. Arm systems are not affected. Only x86 HVM guests using shadow paging can leverage the vulnerability. In addition, there needs to be an entity actively monitoring a guest's video frame buffer (typically for display purposes) in order for such a guest to be able to leverage the vulnerability. x86 PV guests, as well as x86 HVM guests using hardware assisted paging (HAP), cannot leverage the vulnerability. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15563 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-119 | Failure to Constrain Operations within the Bounds of a Memory Buffer |
CPE : Common Platform Enumeration
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2023-11-07 21:37:08 |
|
| 2022-05-03 17:23:20 |
|
| 2021-09-02 01:38:42 |
|
| 2021-08-05 01:37:23 |
|
| 2021-07-21 17:23:39 |
|
| 2021-06-24 12:35:35 |
|
| 2021-05-05 01:38:24 |
|
| 2021-05-04 13:47:46 |
|
| 2021-04-22 02:57:43 |
|
| 2021-03-27 01:33:29 |
|
| 2021-02-05 01:30:54 |
|
| 2020-09-03 01:29:43 |
|
| 2020-07-27 09:22:46 |
|
| 2020-07-23 09:22:48 |
|
| 2020-07-18 12:25:50 |
|
| 2020-07-16 09:22:46 |
|
| 2020-07-16 00:22:54 |
|
| 2020-07-15 21:23:09 |
|
| 2020-07-13 21:23:04 |
|
| 2020-07-07 21:23:06 |
|
| 2020-07-07 17:22:45 |
|
