Vulnerability CVE-2018-12182

Vulnerability Name:

CVE-2018-12182 (CCN-161214)

Assigned:

2018-06-11

Published:

2019-03-27

Updated:

2019-04-11

Summary:

Insufficient memory write check in SMM service for EDK II may allow an authenticated user to potentially enable escalation of privilege, information disclosure and/or denial of service via local access.

CVSS v3 Severity:

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

8.2 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)
7.1 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/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): High User Interaction (UI): None
Scope:	Scope (S): Changed
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

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

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

6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-441

Vulnerability Consequences:

Gain Privileges

References:

Source: MITRE
Type: CNA
CVE-2018-12182

Source: BID
Type: UNKNOWN
107648

Source: CCN
Type: EDK2 Security Advisory
SW SMI CONFUSED DEPUTY SMRAMSAVESTATE.C

Source: CONFIRM
Type: Patch, Vendor Advisory
https://edk2-docs.gitbooks.io/security-advisory/content/sw-smi-confused-deputy-smramsavestate_c.html

Source: XF
Type: UNKNOWN
tianocore-cve201812182-priv-esc(161214)

Source: FEDORA
Type: UNKNOWN
FEDORA-2019-d47a9d4b8b

Source: CONFIRM
Type: UNKNOWN
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03912en_us

Source: CCN
Type: Lenovo Security Advisory: LEN-25869
TianoCore EDK II BIOS Vulnerabilities

Source: CCN
Type: IBM Security Bulletin 958911 (Flex System x280)
IBM has released Unified Extensible Firmware Interface (UEFI) fixes in response to TianoCore EDK II BIOS Vulnerability (CVE-2018-12182)

Source: CCN
Type: TianoCore Web site
TianoCore EDK II

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-12182

Vulnerable Configuration:

Configuration 1:

cpe:/a:tianocore:edk_ii:-:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:tianocore:edk2:-:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.disco:def:2018121820000000	V	CVE-2018-12182 on Ubuntu 19.04 (disco) - low.	2019-03-27
oval:com.ubuntu.bionic:def:201812182000	V	CVE-2018-12182 on Ubuntu 18.04 LTS (bionic) - untriaged.	2019-03-27
oval:com.ubuntu.cosmic:def:2018121820000000	V	CVE-2018-12182 on Ubuntu 18.10 (cosmic) - untriaged.	2019-03-27
oval:com.ubuntu.cosmic:def:201812182000	V	CVE-2018-12182 on Ubuntu 18.10 (cosmic) - untriaged.	2019-03-27
oval:com.ubuntu.bionic:def:2018121820000000	V	CVE-2018-12182 on Ubuntu 18.04 LTS (bionic) - low.	2019-03-27
oval:com.ubuntu.trusty:def:201812182000	V	CVE-2018-12182 on Ubuntu 14.04 LTS (trusty) - untriaged.	2019-03-27
oval:com.ubuntu.xenial:def:2018121820000000	V	CVE-2018-12182 on Ubuntu 16.04 LTS (xenial) - low.	2019-03-27
oval:com.ubuntu.xenial:def:201812182000	V	CVE-2018-12182 on Ubuntu 16.04 LTS (xenial) - untriaged.	2019-03-27

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