CVE-2020-0407 - 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

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MEDIUM

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

Published Sep 17, 2020

4.4

MEDIUM

CVSS 3.1

EPSS 0.11%

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

Affected products

Vendor n/a Product Android Default
n/a
- Version
  Android kernel
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

n/a

Android

n/a

Version	Status	Constraints
Android kernel	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-330

Insufficient Randomness

References (2)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-1909
Advisory
https://source.android.com/security/bulletin/2020-09-01
x_refsource_MISCVendor Advisory

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-1909		Advisory
https://source.android.com/security/bulletin/2020-09-01		x_refsource_MISCVendor Advisory