VDB-168136 · CVE-2020-9971 · HT211850

Apple macOS XPC Service launchd access control

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.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Apple macOS. Affected by this issue is some unknown functionality of the file launchd of the component XPC Service. Executing a manipulation can lead to access control. This vulnerability is handled as CVE-2020-9971. It is possible to launch the attack on the local host. Additionally, an exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Apple macOS (Operating System) (the affected version unknown). It has been declared as critical. This vulnerability affects an unknown part of the file launchd of the component XPC Service. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 01/20/2021 as HT211850. The advisory is shared for download at xlab.tencent.com. This vulnerability was named CVE-2020-9971. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1068.

It is possible to download the exploit at xlab.tencent.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Operating System

Vendor

Apple

Name

macOS

License

commercial

Website

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

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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: 🔍

0-Day Time: 🔍

Timelineinfo

03/02/2020 🔍
01/20/2021 +324 days 🔍
01/20/2021 +0 days 🔍
02/15/2021 +26 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT211850
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-9971 (🔍)
GCVE (CVE): GCVE-0-2020-9971
GCVE (VulDB): GCVE-100-168136
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 01/20/2021 08:30
Updated: 02/15/2021 16:33
Changes: 01/20/2021 08:30 (41), 01/20/2021 08:31 (6), 01/20/2021 08:32 (1), 02/15/2021 16:33 (1)
Complete: 🔍
Submitter: CSieberg
Cache ID: 216::103

Submitinfo

Accepted

Submit #6181: CVE-2020-9971 // Privilege Escalation in Apple iOS < 13.5, Apple macOS < 11.0 (by CSieberg)