CVE-2021-39680 — MEDIUM (4.4)

Vulnerability Description

In sec_SHA256_Transform of sha256_core.c, there is a possible way to read heap data due to uninitialized data. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-197965864References: N/A

CVSS Score

4.4

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Google	Android	-

Related Weaknesses (CWE)

CWE-908

References

https://source.android.com/security/bulletin/pixel/2022-01-01Vendor Advisory
https://source.android.com/security/bulletin/pixel/2022-01-01Vendor Advisory

FAQ

What is CVE-2021-39680?

CVE-2021-39680 is a vulnerability with a CVSS score of 4.4 (MEDIUM). In sec_SHA256_Transform of sha256_core.c, there is a possible way to read heap data due to uninitialized data. This could lead to local information disclosure with System execution privileges needed. ...

How severe is CVE-2021-39680?

CVE-2021-39680 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-39680?

Check the references section above for vendor advisories and patch information. Affected products include: Google Android.