VDB-150665 · CVE-2020-3836 · HT210920

Apple tvOS up to 13.3.0 Kernel memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.3	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Apple tvOS up to 13.3.0. This impacts an unknown function of the component Kernel. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-2020-3836. The attack can only be performed from a local environment. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple tvOS up to 13.3.0 (Digital Media Player) and classified as problematic. This issue affects an unknown code of the component Kernel. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality.

The weakness was published 01/28/2020 by Brandon Azad with Google Project Zero as HT210920 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2020-3836. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

An access issue was addressed with improved memory management.

Upgrading to version 13.3.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

Similar entries are available at VDB-150578, VDB-150598, VDB-150625 and VDB-150657. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Digital Media Player

Vendor

Apple

Name

tvOS

Version

License

commercial

Website

Vendor: https://www.apple.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: tvOS 13.3.1

Timelineinfo

12/18/2019 🔍
01/28/2020 +41 days 🔍
01/28/2020 +0 days 🔍
02/28/2020 +31 days 🔍
04/07/2024 +1500 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT210920
Researcher: Brandon Azad
Organization: Google Project Zero
Status: Confirmed

CVE: CVE-2020-3836 (🔍)
GCVE (CVE): GCVE-0-2020-3836
GCVE (VulDB): GCVE-100-150665
See also: 🔍

Entryinfo

Created: 02/28/2020 14:57
Updated: 04/07/2024 08:26
Changes: 02/28/2020 14:57 (47), 02/28/2020 15:02 (16), 04/07/2024 08:26 (19)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.