CVE-2020-7958

Public Exploit

Description

An issue was discovered on OnePlus 7 Pro devices before 10.0.3.GM21BA. The firmware was found to contain functionality that allows a privileged user (root) in the Rich Execution Environment (REE) to obtain bitmap images from the fingerprint sensor because of Leftover Debug Code. The issue is that the Trusted Application (TA) supports an extended number of commands beyond what is needed to implement a fingerprint authentication system compatible with Android. An attacker who is in the position to send commands to the TA (for example, the root user) is able to send a sequence of these commands that will result in the TA sending a raw fingerprint image to the REE. This means that the Trusted Execution Environment (TEE) no longer protects identifiable fingerprint data from the REE.

6.0

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.06%

Third-Party Advisory synopsys.com

Affected: n/a n/a

References

Link	Tags
https://www.synopsys.com/blogs/software-security/cve-2020-7958/	third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2020-7958?: CVE-2020-7958 has been scored as a medium severity vulnerability.
How to fix CVE-2020-7958?: To fix CVE-2020-7958, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-7958 being actively exploited in the wild?: It is possible that CVE-2020-7958 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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