| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.2 | $0-$5k | 0.00 |
Summary
A vulnerability classified as critical has been found in Xen on Intel. Affected by this issue is some unknown functionality of the component xAPIC Page Handler. Performing a manipulation results in access control. This vulnerability is identified as CVE-2022-42327. There is not any exploit available. It is recommended to apply a patch to fix this issue.
Details
A vulnerability was found in Xen on Intel (Virtualization Software) (version now known). It has been classified as critical. This affects some unknown processing of the component xAPIC Page Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
x86: unintended memory sharing between guests On Intel systems that support the "virtualize APIC accesses" feature, a guest can read and write the global shared xAPIC page by moving the local APIC out of xAPIC mode. Access to this shared page bypasses the expected isolation that should exist between two guests.
The weakness was released 11/01/2022. It is possible to read the advisory at xenbits.xen.org. This vulnerability is uniquely identified as CVE-2022-42327 since 10/03/2022. 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.
The vulnerability scanner Nessus provides a plugin with the ID 211096 (Fedora 37 : xen (2022-9f51d13fa3)), which helps to determine the existence of the flaw in a target environment.
Applying a patch is able to eliminate this problem.
The vulnerability is also documented in the vulnerability database at Tenable (211096). Be aware that VulDB is the high quality source for vulnerability data.
Product
Type
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.3VulDB Meta Temp Score: 6.2
VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.1
NVD Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Access controlCWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Physical: Partially
Local: Yes
Remote: Partially
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 211096
Nessus Name: Fedora 37 : xen (2022-9f51d13fa3)
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Timeline
10/03/2022 🔍11/01/2022 🔍
11/01/2022 🔍
05/06/2025 🔍
Sources
Advisory: FEDORA-2022-07438e12dfStatus: Confirmed
CVE: CVE-2022-42327 (🔍)
GCVE (CVE): GCVE-0-2022-42327
GCVE (VulDB): GCVE-100-212631
Entry
Created: 11/01/2022 15:54Updated: 05/06/2025 07:41
Changes: 11/01/2022 15:54 (39), 11/30/2022 14:45 (2), 11/30/2022 14:48 (11), 11/17/2024 07:49 (16), 05/06/2025 07:41 (1)
Complete: 🔍
Cache ID: 216::103
Be aware that VulDB is the high quality source for vulnerability data.
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