Xen on ARM Dom0 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Xen on ARM. It has been classified as problematic. This issue affects some unknown processing of the component Dom0. Performing a manipulation results in denial of service. This vulnerability is cataloged as CVE-2022-33744. There is no exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as problematic has been found in Xen on ARM (Virtualization Software) (unknown version). This affects an unknown code block of the component Dom0. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests' memory pages.

The weakness was shared 07/05/2022. The advisory is shared at xenbits.xenproject.org. This vulnerability is uniquely identified as CVE-2022-33744 since 06/15/2022. Neither technical details nor an exploit are publicly available.

Applying a patch is able to eliminate this problem.

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Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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

06/15/2022 🔍
07/05/2022 +20 days 🔍
07/05/2022 +0 days 🔍
07/19/2022 +14 days 🔍

Sourcesinfo

Advisory: xenbits.xenproject.org
Status: Confirmed

CVE: CVE-2022-33744 (🔍)
GCVE (CVE): GCVE-0-2022-33744
GCVE (VulDB): GCVE-100-203229

Entryinfo

Created: 07/05/2022 17:19
Updated: 07/19/2022 09:05
Changes: 07/05/2022 17:19 (15), 07/05/2022 17:20 (24), 07/19/2022 09:05 (18)
Complete: 🔍
Cache ID: 216::103

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