Vulnerability Name:

CVE-2020-0407

Assigned:2019-10-17
Published:2020-09-17
Updated:2021-07-21
Summary: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
CVSS v3 Severity:4.4 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
4.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-326
References:Source: MITRE
Type: CNA
CVE-2020-0407

Source: MISC
Type: Vendor Advisory
https://source.android.com/security/bulletin/2020-09-01

Vulnerable Configuration:Configuration 1:
  • cpe:/o:google:android:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Vulnerability Name:

    CVE-2020-0407 (CCN-188487)

    Assigned:2019-10-17
    Published:2020-09-10
    Updated:2020-09-22
    Summary: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
    CVSS v3 Severity:4.4 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N)
    3.9 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
    Exploitability Metrics:Attack Vector (AV): Local
    Attack Complexity (AC): Low
    Privileges Required (PR): High
    User Interaction (UI): None
    Scope:Scope (S): Unchanged
    Impact Metrics:Confidentiality (C): High
    Integrity (I): None
    Availibility (A): None
    5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
    4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
    Exploitability Metrics:Attack Vector (AV): Local
    Attack Complexity (AC): Low
    Privileges Required (PR): Low
    User Interaction (UI): None
    Scope:Scope (S): Unchanged
    Impact Metrics:Confidentiality (C): High
    Integrity (I): None
    Availibility (A): None
    CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
    Exploitability Metrics:Access Vector (AV): Local
    Access Complexity (AC): Low
    Authentication (Au): None
    Impact Metrics:Confidentiality (C): Partial
    Integrity (I): None
    Availibility (A): None
    4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:N/A:N)
    Exploitability Metrics:Access Vector (AV): Local
    Access Complexity (AC): Low
    Athentication (Au): Single_Instance
    Impact Metrics:Confidentiality (C): Complete
    Integrity (I): None
    Availibility (A): None
    Vulnerability Type:CWE-326
    Vulnerability Consequences:Obtain Information
    References:Source: CCN
    Type: Google Web site
    Android

    Source: MITRE
    Type: CNA
    CVE-2020-0407

    Source: XF
    Type: UNKNOWN
    android-cve20200407-info-disc(188487)

    Source: CCN
    Type: Android Open Source Project
    Android Security Bulletin—September 2020

    Source: MISC
    Type: Vendor Advisory
    https://source.android.com/security/bulletin/2020-09-01

    Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:google:android:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    google android -
    google android -