Xen IOMMU Page Mapping access control

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Xen. It has been rated as critical. Impacted is an unknown function of the component IOMMU Page Mapping. This manipulation causes access control. This vulnerability is registered as CVE-2021-28695. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in Xen (Virtualization Software) (version unknown) and classified as critical. Affected by this vulnerability is an unknown function of the component IOMMU Page Mapping. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 08/28/2021. It is possible to read the advisory at xenbits.xenproject.org. This vulnerability is known as CVE-2021-28695. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Applying a patch is able to eliminate this problem.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.4

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/18/2021 🔍
08/28/2021 +162 days 🔍
08/28/2021 +0 days 🔍
09/01/2021 +4 days 🔍

Sourcesinfo

Advisory: xenbits.xenproject.org
Status: Confirmed

CVE: CVE-2021-28695 (🔍)
GCVE (CVE): GCVE-0-2021-28695
GCVE (VulDB): GCVE-100-181615

Entryinfo

Created: 08/28/2021 06:19
Updated: 09/01/2021 14:31
Changes: 08/28/2021 06:19 (36), 09/01/2021 14:31 (2)
Complete: 🔍
Cache ID: 216::103

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