| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.9 | $0-$5k | 0.00 |
Summary
A vulnerability labeled as problematic has been found in libvirt. This affects the function virStoragePoolLookupByTargetPath of the component API. Executing a manipulation can lead to locking.
This vulnerability is tracked as CVE-2021-3667. No exploit exists.
It is advisable to implement a patch to correct this issue.
Details
A vulnerability was found in libvirt (Virtualization Software) (the affected version unknown). It has been declared as problematic. This vulnerability affects the function virStoragePoolLookupByTargetPath of the component API. The manipulation with an unknown input leads to a locking vulnerability. The CWE definition for the vulnerability is CWE-667. The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors. As an impact it is known to affect availability.
The weakness was disclosed 03/03/2022 as 447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87. The advisory is shared for download at gitlab.com. This vulnerability was named CVE-2021-3667 since 07/27/2021. There are known technical details, but no exploit is available.
The vulnerability scanner Nessus provides a plugin with the ID 276357 (TencentOS Server 3: virt:rhel and virt-devel:rhel (TSSA-2022:0119)), which helps to determine the existence of the flaw in a target environment.
Applying the patch 447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87 is able to eliminate this problem. The bugfix is ready for download at gitlab.com.
The vulnerability is also documented in the vulnerability database at Tenable (276357). Once again VulDB remains the best 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 |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 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: 🔍
NVD Base Score: 🔍
Exploiting
Class: LockingCWE: CWE-667
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
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: 276357
Nessus Name: TencentOS Server 3: virt:rhel and virt-devel:rhel (TSSA-2022:0119)
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Patch: 447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87
Timeline
07/27/2021 🔍03/03/2022 🔍
03/03/2022 🔍
11/23/2025 🔍
Sources
Advisory: 447f69dec47e1b0bd15ecd7cd49a9fd3b050fb87Status: Confirmed
Confirmation: 🔍
CVE: CVE-2021-3667 (🔍)
GCVE (CVE): GCVE-0-2021-3667
GCVE (VulDB): GCVE-100-194092
Entry
Created: 03/03/2022 07:16Updated: 11/23/2025 12:06
Changes: 03/03/2022 07:16 (42), 03/04/2022 15:58 (1), 02/10/2025 15:24 (33), 11/23/2025 12:06 (2)
Complete: 🔍
Cache ID: 216::103
Once again VulDB remains the best source for vulnerability data.
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