Vulnerability CVE-2016-5349

Vulnerability Name:

CVE-2016-5349 (CCN-125668)

Assigned:

2016-06-09

Published:

2017-04-06

Updated:

2017-07-11

Summary:

The high level operating systems (HLOS) was not providing sufficient memory address information to ensure that secure applications inside Qualcomm Secure Execution Environment (QSEE) only write to legitimate memory ranges related to the QSEE secure application's HLOS client. When secure applications inside Qualcomm Secure Execution Environment (QSEE) receive memory addresses from a high level operating system (HLOS) such as Linux Android, those address have previously been verified as belonging to HLOS memory space rather than QSEE memory space, but they were not verified to be from HLOS user space rather than kernel space. This lack of verification could lead to privilege escalation within the HLOS.

CVSS v3 Severity:

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

7.8 High (CCN 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 (CCN 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

CVSS v2 Severity:

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

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

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-200

Vulnerability Consequences:

Gain Privileges

References:

Source: CCN
Type: Google Web site
Android

Source: MITRE
Type: CNA
CVE-2016-5349

Source: BID
Type: Third Party Advisory, VDB Entry
97364

Source: CCN
Type: BID-97364
Google Nexus Qualcomm TrustZone CVE-2016-5349 Information Disclosure Vulnerability

Source: SECTRACK
Type: UNKNOWN
1038201

Source: XF
Type: UNKNOWN
android-cve20165349-priv-esc(125668)

Source: CCN
Type: Android Open Source Project
Android Security BulletinApril 2017

Source: CONFIRM
Type: Vendor Advisory
https://source.android.com/security/bulletin/2017-04-01

Source: CONFIRM
Type: Issue Tracking, Patch, Third Party Advisory
https://www.codeaurora.org/insufficient-memory-address-information-prevent-arbitrary-memory-access-qsee-secure-applications-cve

Source: CONFIRM
Type: Vendor Advisory
https://www.qualcomm.com/company/product-security/security-advisories

Vulnerable Configuration:

Configuration 1:

cpe:/o:google:android:*:*:*:*:*:*:*:* (Version <= 7.1.1)

Configuration CCN 1:

cpe:/o:google:android:*:*:*:*:*:*:*:*

OR cpe:/h:google:nexus_6:-:*:*:*:*:*:*:*

OR cpe:/h:google:android_one:-:*:*:*:*:*:*:*

OR cpe:/h:google:nexus_5x:-:*:*:*:*:*:*:*

OR cpe:/h:google:nexus_6p:-:*:*:*:*:*:*:*

OR cpe:/h:google:pixel:-:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.precise:def:20165349000	V	CVE-2016-5349 on Ubuntu 12.04 LTS (precise) - medium.	2017-04-06
oval:com.ubuntu.trusty:def:20165349000	V	CVE-2016-5349 on Ubuntu 14.04 LTS (trusty) - medium.	2017-04-06
oval:com.ubuntu.xenial:def:20165349000	V	CVE-2016-5349 on Ubuntu 16.04 LTS (xenial) - medium.	2017-04-06
oval:com.ubuntu.xenial:def:201653490000000	V	CVE-2016-5349 on Ubuntu 16.04 LTS (xenial) - medium.	2017-04-06

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