Executive Summary
Informations | |||
---|---|---|---|
Name | CVE-2020-15564 | 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 | |||
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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:L/Au:N/C:N/I:N/A:C) | |||
---|---|---|---|
Cvss Base Score | 4.9 | Attack Range | Local |
Cvss Impact Score | 6.9 | Attack Complexity | Low |
Cvss Expoit Score | 3.9 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
An issue was discovered in Xen through 4.13.x, allowing Arm guest OS users to cause a hypervisor crash because of a missing alignment check in VCPUOP_register_vcpu_info. The hypercall VCPUOP_register_vcpu_info is used by a guest to register a shared region with the hypervisor. The region will be mapped into Xen address space so it can be directly accessed. On Arm, the region is accessed with instructions that require a specific alignment. Unfortunately, there is no check that the address provided by the guest will be correctly aligned. As a result, a malicious guest could cause a hypervisor crash by passing a misaligned address. A malicious guest administrator may cause a hypervisor crash, resulting in a Denial of Service (DoS). All Xen versions are vulnerable. Only Arm systems are vulnerable. x86 systems are not affected. |
Original Source
Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15564 |
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 |
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2023-11-07 21:37:08 |
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2022-05-03 17:23:20 |
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2021-09-02 01:38:42 |
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2021-08-05 01:37:23 |
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2021-07-21 17:23:39 |
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2021-06-24 12:35:35 |
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2021-05-05 01:38:24 |
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2021-05-04 13:47:46 |
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2021-04-22 02:57:43 |
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2021-03-27 01:33:29 |
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2021-02-05 01:30:54 |
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2020-09-03 01:29:43 |
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2020-07-27 09:22:46 |
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2020-07-23 09:22:48 |
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2020-07-16 09:22:47 |
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2020-07-15 21:23:09 |
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2020-07-13 21:23:04 |
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2020-07-07 21:23:06 |
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2020-07-07 17:22:45 |
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