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Vulnerability Details :

CVE-2021-38788

Summary
Assigner-mitre
Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At-19 Jan, 2022 | 15:23
Updated At-04 Aug, 2024 | 01:51
Rejected At-
Credits

The Background service in Allwinner R818 SoC Android Q SDK V1.0 is used to manage background applications. Malicious apps can use the interface provided by the service to set the number of applications allowed to run in the background to 0 and add themselves to the whitelist, so that once other applications enter the background, they will be forcibly stopped by the system, causing a denial of service.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mitre
Assigner Org ID:8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At:19 Jan, 2022 | 15:23
Updated At:04 Aug, 2024 | 01:51
Rejected At:
▼CVE Numbering Authority (CNA)

The Background service in Allwinner R818 SoC Android Q SDK V1.0 is used to manage background applications. Malicious apps can use the interface provided by the service to set the number of applications allowed to run in the background to 0 and add themselves to the whitelist, so that once other applications enter the background, they will be forcibly stopped by the system, causing a denial of service.

Affected Products
Vendor
n/a
Product
n/a
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
textN/An/a
Type: text
CWE ID: N/A
Description: n/a
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.allwinnertech.com/index.php?c=product&a=index&id=92
x_refsource_MISC
https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.md
x_refsource_MISC
https://www.cnvd.org.cn/flaw/show/CNVD-2021-46928
x_refsource_MISC
https://vul.wangan.com/a/CNVD-2021-46928
x_refsource_MISC
Hyperlink: https://www.allwinnertech.com/index.php?c=product&a=index&id=92
Resource:
x_refsource_MISC
Hyperlink: https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.md
Resource:
x_refsource_MISC
Hyperlink: https://www.cnvd.org.cn/flaw/show/CNVD-2021-46928
Resource:
x_refsource_MISC
Hyperlink: https://vul.wangan.com/a/CNVD-2021-46928
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.allwinnertech.com/index.php?c=product&a=index&id=92
x_refsource_MISC
x_transferred
https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.md
x_refsource_MISC
x_transferred
https://www.cnvd.org.cn/flaw/show/CNVD-2021-46928
x_refsource_MISC
x_transferred
https://vul.wangan.com/a/CNVD-2021-46928
x_refsource_MISC
x_transferred
Hyperlink: https://www.allwinnertech.com/index.php?c=product&a=index&id=92
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.md
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://www.cnvd.org.cn/flaw/show/CNVD-2021-46928
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://vul.wangan.com/a/CNVD-2021-46928
Resource:
x_refsource_MISC
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@mitre.org
Published At:19 Jan, 2022 | 16:15
Updated At:12 Jul, 2022 | 17:42

The Background service in Allwinner R818 SoC Android Q SDK V1.0 is used to manage background applications. Malicious apps can use the interface provided by the service to set the number of applications allowed to run in the background to 0 and add themselves to the whitelist, so that once other applications enter the background, they will be forcibly stopped by the system, causing a denial of service.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary2.05.0MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
Type: Primary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Primary
Version: 2.0
Base score: 5.0
Base severity: MEDIUM
Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P
CPE Matches
allwinnertech
allwinnertech
>>r818>>*
cpe:2.3:h:allwinnertech:r818:*:*:*:*:*:*:*:*
allwinnertech
allwinnertech
>>android_q_sdk>>1.0
cpe:2.3:a:allwinnertech:android_q_sdk:1.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
NVD-CWE-noinfoPrimarynvd@nist.gov
CWE ID: NVD-CWE-noinfo
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.mdcve@mitre.org
Broken Link
Third Party Advisory
https://vul.wangan.com/a/CNVD-2021-46928cve@mitre.org
Third Party Advisory
https://www.allwinnertech.com/index.php?c=product&a=index&id=92cve@mitre.org
Product
Vendor Advisory
https://www.cnvd.org.cn/flaw/show/CNVD-2021-46928cve@mitre.org
Third Party Advisory
Hyperlink: https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.md
Source: cve@mitre.org
Resource:
Broken Link
Third Party Advisory
Hyperlink: https://vul.wangan.com/a/CNVD-2021-46928
Source: cve@mitre.org
Resource:
Third Party Advisory
Hyperlink: https://www.allwinnertech.com/index.php?c=product&a=index&id=92
Source: cve@mitre.org
Resource:
Product
Vendor Advisory
Hyperlink: https://www.cnvd.org.cn/flaw/show/CNVD-2021-46928
Source: cve@mitre.org
Resource:
Third Party Advisory

Change History

0
Information is not available yet

Similar CVEs

5Records found
CVE-2021-38787
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.79% / 72.91%
||
7 Day CHG~0.00%
Published-19 Jan, 2022 | 12:46
Updated-04 Aug, 2024 | 01:51
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

There is an integer overflow in the ION driver "/dev/ion" of Allwinner R818 SoC Android Q SDK V1.0 that could use the ioctl cmd "COMPAT_ION_IOC_SUNXI_FLUSH_RANGE" to cause a system crash (denial of service).

Action-Not Available
Vendor-allwinnertechn/a
Product-r818android_q_sdkn/a
CWE ID-CWE-190
Integer Overflow or Wraparound
CVE-2021-38786
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.79% / 72.92%
||
7 Day CHG~0.00%
Published-19 Jan, 2022 | 11:53
Updated-04 Aug, 2024 | 01:51
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

There is a NULL pointer dereference in media/libcedarc/vdecoder of Allwinner R818 SoC Android Q SDK V1.0, which could cause a media crash (denial of service).

Action-Not Available
Vendor-allwinnertechn/a
Product-r818android_q_sdkn/a
CWE ID-CWE-476
NULL Pointer Dereference
CVE-2021-38785
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.78% / 72.67%
||
7 Day CHG~0.00%
Published-18 Jan, 2022 | 13:46
Updated-04 Aug, 2024 | 01:51
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev/cedar_dev that could use the ioctl cmd IOCTL_GET_IOMMU_ADDR to cause a system crash.

Action-Not Available
Vendor-allwinnertechn/a
Product-r818android_q_sdkn/a
CWE ID-CWE-476
NULL Pointer Dereference
CVE-2021-38784
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.64% / 69.60%
||
7 Day CHG~0.00%
Published-18 Jan, 2022 | 13:10
Updated-04 Aug, 2024 | 01:51
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

There is a NULL pointer dereference in the syscall open_exec function of Allwinner R818 SoC Android Q SDK V1.0 that could executable a malicious file to cause a system crash.

Action-Not Available
Vendor-allwinnertechn/a
Product-r818android_q_sdkn/a
CWE ID-CWE-476
NULL Pointer Dereference
CVE-2021-38783
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-7.5||HIGH
EPSS-0.77% / 72.60%
||
7 Day CHG~0.00%
Published-18 Jan, 2022 | 12:43
Updated-04 Aug, 2024 | 01:51
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

There is a Out-of-Bound Write in the Allwinner R818 SoC Android Q SDK V1.0 camera driver "/dev/cedar_dev" through iotcl cmd IOCTL_SET_PROC_INFO and IOCTL_COPY_PROC_INFO, which could cause a system crash or EoP.

Action-Not Available
Vendor-allwinnertechn/a
Product-r818android_q_sdkn/a
CWE ID-CWE-787
Out-of-bounds Write
Details not found