| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.9 | $0-$5k | 0.00 |
Summary
A vulnerability marked as problematic has been reported in Xen. The impacted element is an unknown function of the component Xenstore Node Handler. The manipulation leads to recursion. This vulnerability is referenced as CVE-2022-42321. No exploit is available. It is recommended to apply a patch to fix this issue.
Details
A vulnerability was found in Xen (Virtualization Software) (the affected version is unknown). It has been rated as problematic. This issue affects an unknown code of the component Xenstore Node Handler. The manipulation with an unknown input leads to a recursion vulnerability. Using CWE to declare the problem leads to CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. Impacted is availability. The summary by CVE is:
Xenstore: Guests can crash xenstored via exhausting the stack Xenstored is using recursion for some Xenstore operations (e.g. for deleting a sub-tree of Xenstore nodes). With sufficiently deep nesting levels this can result in stack exhaustion on xenstored, leading to a crash of xenstored.
The weakness was published 11/01/2022. It is possible to read the advisory at xenbits.xen.org. The identification of this vulnerability is CVE-2022-42321 since 10/03/2022. The technical details are unknown and an exploit is not publicly available.
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: 5.0VulDB Meta Temp Score: 4.9
VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.5
NVD Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: RecursionCWE: CWE-674 / CWE-404
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 🔍
11/17/2024 🔍
Sources
Advisory: FEDORA-2022-07438e12dfStatus: Confirmed
CVE: CVE-2022-42321 (🔍)
GCVE (CVE): GCVE-0-2022-42321
GCVE (VulDB): GCVE-100-212615
Entry
Created: 11/01/2022 15:41Updated: 11/17/2024 09:00
Changes: 11/01/2022 15:41 (38), 11/30/2022 12:19 (2), 11/30/2022 12:26 (11), 11/17/2024 09:00 (16)
Complete: 🔍
Cache ID: 216::103
Be aware that VulDB is the high quality source for vulnerability data.
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