Vulnerability Name:

CVE-2021-27138 (CCN-197020)

Assigned:2021-02-15
Published:2021-02-15
Updated:2021-02-24
Summary:The boot loader in Das U-Boot before 2021.04-rc2 mishandles use of unit addresses in a FIT.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
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): None
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): None
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-27138

Source: XF
Type: UNKNOWN
dasuboot-cve202127138-unspecified(197020)

Source: CCN
Type: U-Boot GIT Repository
image: Check for unit addresses in FITs

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/u-boot/u-boot/commit/3f04db891a353f4b127ed57279279f851c6b4917

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/u-boot/u-boot/commit/79af75f7776fc20b0d7eb6afe1e27c00fdb4b9b4

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/u-boot/u-boot/commit/b6f4c757959f8850e1299a77c8e5713da78e8ec0

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-27138

Vulnerable Configuration:Configuration 1:
  • cpe:/a:denx:u-boot:*:*:*:*:*:*:*:* (Version <= 2021.01)
  • OR cpe:/a:denx:u-boot:2021.04:rc1:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    denx u-boot *
    denx u-boot 2021.04 rc1