CVE-2020-0407

MEDIUM

Android - Use of Insufficiently Random Values in f2fs Encryption IV Handling

Title source: llm

Description

In various functions in fscrypt_ice.c and related files in some implementations of f2fs encryption that use encryption hardware which only supports 32-bit IVs (Initialization Vectors), 64-bit IVs are used and later are truncated to 32 bits. This may cause IV reuse and thus weakened disk encryption. 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-153450752References: N/A

References (1)

Core 1

Core References

Vendor Advisory x_refsource_misc

https://source.android.com/security/bulletin/2020-09-01

Scores

CVSS v3 4.4

EPSS 0.0011

EPSS Percentile 1.5%

Attack Vector LOCAL

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

Details

CWE

CWE-330

Status published

Products (1)

google/android

Published Sep 17, 2020

Tracked Since Feb 18, 2026