Vulnerability in Allwinnertech Android Q Sdk
CVE-2021-38788
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.017 (76.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Allwinnertech Android Q Sdk — versions 1.0
- Allwinnertech R818
Public proof-of-concept exploits
References
- www.allwinnertech.com/index.php (Product, Vendor Advisory)
- github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner R818 SoC：background… (Third Party Advisory, Broken Link)
- www.cnvd.org.cn/flaw/show/CNVD-2021-46928 (Third Party Advisory)
- vul.wangan.com/a/CNVD-2021-46928 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-38788?
- CVE-2021-38788 is a high-severity vulnerability in Allwinnertech Android Q Sdk. CVSS score: 7.5/10. Published 2022-01-19.
- How severe is CVE-2021-38788?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-38788 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.