Vulnerability Name:

CVE-2021-25338 (CCN-197773)

Assigned:2021-03-04
Published:2021-03-04
Updated:2022-10-25
Summary:Improper memory access control in RKP in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows an attacker, given a compromised kernel, to write certain part of RKP EL2 memory region.
CVSS v3 Severity:5.2 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L)
4.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Physical
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): Low
4.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:L)
3.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Physical
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): Low
CVSS v2 Severity:3.6 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): Partial
4.4 Medium (CCN CVSS v2 Vector: AV:L/AC:H/Au:M/C:N/I:C/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Athentication (Au): Multiple_Instances
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): Partial
Vulnerability Type:CWE-Other
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2021-25338

Source: XF
Type: UNKNOWN
samsung-cve202125338-sec-bypass(197773)

Source: MISC
Type: Vendor Advisory
https://security.samsungmobile.com

Source: CCN
Type: Samsung Mobile Web site
Security Updates

Source: CONFIRM
Type: Vendor Advisory
https://security.samsungmobile.com/securityUpdate.smsb

Vulnerable Configuration:Configuration 1:
  • cpe:/o:google:android:10.0:*:*:*:*:*:*:*
  • OR cpe:/o:google:android:11.0:*:*:*:*:*:*:*
  • AND
  • cpe:/h:samsung:exynos_9830:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    google android 10.0
    google android 11.0
    samsung exynos 9830 -