Apple macOS up to 10.15.4 PackageKit default permission

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Apple macOS up to 10.15.4. Affected by this vulnerability is an unknown functionality of the component PackageKit. Executing a manipulation can lead to default permission. This vulnerability appears as CVE-2020-9817. The attack requires local access. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Apple macOS up to 10.15.4 (Operating System) and classified as critical. This vulnerability affects an unknown function of the component PackageKit. The manipulation with an unknown input leads to a default permission vulnerability. The CWE definition for the vulnerability is CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in macOS Catalina 10.15.5. A malicious application may be able to gain root privileges.

The weakness was presented 05/26/2020 with NCC Group as HT211170 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2020-9817. The attack needs to be approached locally. The successful exploitation requires a single authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1222. The advisory points out:

A permissions issue existed. This issue was addressed with improved permission validation.

Upgrading to version 10.15.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

See VDB-155817, VDB-155818, VDB-155819 and VDB-155820 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Default permission
CWE: CWE-276 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: macOS 10.15.5

Timelineinfo

03/02/2020 🔍
05/26/2020 +85 days 🔍
05/26/2020 +0 days 🔍
05/30/2020 +4 days 🔍
10/20/2020 +143 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT211170
Organization: NCC Group
Status: Confirmed

CVE: CVE-2020-9817 (🔍)
GCVE (CVE): GCVE-0-2020-9817
GCVE (VulDB): GCVE-100-155848
scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔍

Entryinfo

Created: 05/30/2020 07:46
Updated: 10/20/2020 17:29
Changes: 05/30/2020 07:46 (47), 05/30/2020 07:51 (17), 10/20/2020 17:29 (1)
Complete: 🔍
Cache ID: 216::103

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

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