Vulnerability CVE-2018-1000205

Vulnerability Name:

CVE-2018-1000205 (CCN-145694)

Assigned:

2018-06-03

Published:

2018-06-03

Updated:

2020-10-22

Summary:

U-Boot contains a CWE-20: Improper Input Validation vulnerability in Verified boot signature validation that can result in Bypass verified boot. This attack appear to be exploitable via Specially crafted FIT image and special device memory functionality.

CVSS v3 Severity:

5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): High Availibility (A): None

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): Low Availibility (A): None

CVSS v2 Severity:

4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

Vulnerability Type:

CWE-20

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2018-1000205

Source: XF
Type: UNKNOWN
uboot-cve20181000205-sec-bypass(145694)

Source: CCN
Type: U-Boot Mailing List, Sun Jun 3 18:46:50 UTC 2018
vboot: Do not use hashed-strings offset

Source: MISC
Type: Mailing List, Patch, Vendor Advisory
https://lists.denx.de/pipermail/u-boot/2018-June/330454.html

Source: MISC
Type: Mailing List, Mitigation, Vendor Advisory
https://lists.denx.de/pipermail/u-boot/2018-June/330898.html

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-1000205

Vulnerable Configuration:

Configuration 1:

cpe:/a:denx:u-boot:*:*:*:*:*:*:*:* (Version <= 2018.07)

Configuration CCN 1:

cpe:/h:denx:das_u-boot:-:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.xenial:def:201810002050000000	V	CVE-2018-1000205 on Ubuntu 16.04 LTS (xenial) - negligible.	2018-06-26
oval:com.ubuntu.artful:def:20181000205000	V	CVE-2018-1000205 on Ubuntu 17.10 (artful) - low.	2018-06-26
oval:com.ubuntu.xenial:def:20181000205000	V	CVE-2018-1000205 on Ubuntu 16.04 LTS (xenial) - low.	2018-06-26
oval:com.ubuntu.disco:def:201810002050000000	V	CVE-2018-1000205 on Ubuntu 19.04 (disco) - negligible.	2018-06-26
oval:com.ubuntu.bionic:def:20181000205000	V	CVE-2018-1000205 on Ubuntu 18.04 LTS (bionic) - low.	2018-06-26
oval:com.ubuntu.cosmic:def:201810002050000000	V	CVE-2018-1000205 on Ubuntu 18.10 (cosmic) - negligible.	2018-06-26
oval:com.ubuntu.cosmic:def:20181000205000	V	CVE-2018-1000205 on Ubuntu 18.10 (cosmic) - low.	2018-06-26
oval:com.ubuntu.bionic:def:201810002050000000	V	CVE-2018-1000205 on Ubuntu 18.04 LTS (bionic) - negligible.	2018-06-26
oval:com.ubuntu.trusty:def:20181000205000	V	CVE-2018-1000205 on Ubuntu 14.04 LTS (trusty) - low.	2018-06-26

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