CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.0 | $5k-$25k | 0.00 |
A vulnerability was found in QEMU (Virtualization Software) (version unknown) and classified as critical. Affected by this issue is an unknown function of the component virtio-fs Shared File System Daemon. The manipulation of the argument xattrmap
with an unknown input leads to a permissions vulnerability. Using CWE to declare the problem leads to CWE-281. The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended. Impacted is confidentiality, integrity, and availability.
The weakness was published 03/10/2021. The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2021-20263. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/29/2021). This vulnerability is assigned to T1222 by the MITRE ATT&CK project.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Product
Type
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.0VulDB Meta Temp Score: 4.0
VulDB Base Score: 4.6
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 3.3
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: PermissionsCWE: CWE-281 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Local: No
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 |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
12/17/2020 🔍03/10/2021 🔍
03/10/2021 🔍
03/29/2021 🔍
Sources
Product: qemu.orgAdvisory: bugzilla.redhat.com
Status: Not defined
CVE: CVE-2021-20263 (🔍)
Entry
Created: 03/10/2021 09:41Updated: 03/29/2021 14:32
Changes: 03/10/2021 09:41 (36), 03/29/2021 14:29 (2), 03/29/2021 14:32 (18)
Complete: 🔍
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