CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.1 | $0-$5k | 0.00 |
A vulnerability classified as problematic was found in Linux Kernel up to 5.4.91 (Operating System). Affected by this vulnerability is an unknown code block of the component BPF Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality.
The weakness was released 05/28/2021. The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2021-20239. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.
Upgrading to version 5.4.92 eliminates this vulnerability.
Product
Type
Vendor
Name
Version
- 5.4.0
- 5.4.1
- 5.4.2
- 5.4.3
- 5.4.4
- 5.4.5
- 5.4.6
- 5.4.7
- 5.4.8
- 5.4.9
- 5.4.10
- 5.4.11
- 5.4.12
- 5.4.13
- 5.4.14
- 5.4.15
- 5.4.16
- 5.4.17
- 5.4.18
- 5.4.19
- 5.4.20
- 5.4.21
- 5.4.22
- 5.4.23
- 5.4.24
- 5.4.25
- 5.4.26
- 5.4.27
- 5.4.28
- 5.4.29
- 5.4.30
- 5.4.31
- 5.4.32
- 5.4.33
- 5.4.34
- 5.4.35
- 5.4.36
- 5.4.37
- 5.4.38
- 5.4.39
- 5.4.40
- 5.4.41
- 5.4.42
- 5.4.43
- 5.4.44
- 5.4.45
- 5.4.46
- 5.4.47
- 5.4.48
- 5.4.49
- 5.4.50
- 5.4.51
- 5.4.52
- 5.4.53
- 5.4.54
- 5.4.55
- 5.4.56
- 5.4.57
- 5.4.58
- 5.4.59
- 5.4.60
- 5.4.61
- 5.4.62
- 5.4.63
- 5.4.64
- 5.4.65
- 5.4.66
- 5.4.67
- 5.4.68
- 5.4.69
- 5.4.70
- 5.4.71
- 5.4.72
- 5.4.73
- 5.4.74
- 5.4.75
- 5.4.76
- 5.4.77
- 5.4.78
- 5.4.79
- 5.4.80
- 5.4.81
- 5.4.82
- 5.4.83
- 5.4.84
- 5.4.85
- 5.4.86
- 5.4.87
- 5.4.88
- 5.4.89
- 5.4.90
- 5.4.91
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: 4.3VulDB Meta Temp Score: 4.1
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
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: Information disclosureCWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
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 |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Kernel 5.4.92
Timeline
12/17/2020 🔍05/28/2021 🔍
05/28/2021 🔍
06/03/2021 🔍
Sources
Vendor: kernel.orgAdvisory: bugzilla.redhat.com
Status: Confirmed
CVE: CVE-2021-20239 (🔍)
Entry
Created: 05/28/2021 16:15Updated: 06/03/2021 08:54
Changes: 05/28/2021 16:15 (40), 06/03/2021 08:54 (5)
Complete: 🔍
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