Executive Summary
Informations | |||
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Name | CVE-2021-3308 | First vendor Publication | 2021-01-26 |
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:U/C:N/I:N/A:H | |||
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Overall CVSS Score | 5.5 | ||
Base Score | 5.5 | Environmental Score | 5.5 |
impact SubScore | 3.6 | Temporal Score | 5.5 |
Exploitabality Sub Score | 1.8 | ||
Attack Vector | Local | Attack Complexity | Low |
Privileges Required | Low | User Interaction | None |
Scope | Unchanged | 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) | |||
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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 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI pass through devices can force the allocation of all IDT vectors on the system by rebooting itself with MSI or MSI-X capabilities enabled and entries setup. Such reboots will leak any vectors used by the MSI(-X) entries that the guest might had enabled, and hence will lead to vector exhaustion on the system, not allowing further PCI pass through devices to work properly. HVM guests with PCI pass through devices can mount a Denial of Service (DoS) attack affecting the pass through of PCI devices to other guests or the hardware domain. In the latter case, this would affect the entire host. |
Original Source
Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3308 |
CPE : Common Platform Enumeration
Sources (Detail)
Alert History
Date | Informations |
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2023-11-07 21:35:57 |
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2023-08-02 02:05:38 |
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2022-04-26 21:23:31 |
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2021-09-02 01:44:22 |
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2021-08-05 01:43:05 |
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2021-07-12 12:41:15 |
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2021-05-04 14:09:21 |
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2021-04-22 03:14:47 |
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2021-03-26 12:38:46 |
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2021-02-04 17:23:01 |
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2021-01-31 09:23:01 |
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2021-01-27 09:23:23 |
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2021-01-27 00:23:07 |
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