VDB-254327 · CVE-2023-42836 · GCVE-0-2023-42836

Apple macOS+ iOS/iPadOS Home Directory 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.
5.3	$5k-$25k	0.00

Summaryinfo

A vulnerability has been found in Apple macOS+ iOS and iPadOS and classified as critical. The impacted element is an unknown function of the component Home Directory Handler. The manipulation leads to access control. This vulnerability is uniquely identified as CVE-2023-42836. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Apple macOS+ iOS and iPadOS (Tablet Operating System) (the affected version unknown) and classified as critical. This issue affects an unknown part of the component Home Directory Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A logic issue was addressed with improved checks. This issue is fixed in iOS 17.1 and iPadOS 17.1, macOS Ventura 13.6.3, macOS Sonoma 14.1, macOS Monterey 12.7.2. An attacker may be able to access connected network volumes mounted in the home directory.

The weakness was disclosed 02/21/2024. It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2023-42836 since 09/14/2023. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/06/2024). It is expected to see the exploit prices for this product increasing in the near future.The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Tablet Operating System

Vendor

Apple

Name

License

commercial

Website

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

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
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: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: 🔍

0-Day Time: 🔍

Timelineinfo

09/14/2023 🔍
02/21/2024 +160 days 🔍
02/21/2024 +0 days 🔍
12/06/2024 +289 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2023-42836 (🔍)
GCVE (CVE): GCVE-0-2023-42836
GCVE (VulDB): GCVE-100-254327
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 02/21/2024 10:11
Updated: 12/06/2024 15:10
Changes: 02/21/2024 10:11 (40), 12/06/2024 15:10 (26)
Complete: 🔍
Cache ID: 216::103