Apple macOS up to 11.1 Screen Sharing privilege escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple macOS up to 11.1. It has been classified as critical. This affects an unknown function of the component Screen Sharing. This manipulation causes an unknown weakness. This vulnerability is handled as CVE-2019-20838. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Apple macOS up to 11.1 (Operating System). Affected by this vulnerability is an unknown code block of the component Screen Sharing. The impact remains unknown.

The weakness was released 02/01/2021 as HT212147 as advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2019-20838. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/03/2021). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Multiple issues in pcre

Upgrading to version 11.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

Multiple issues were addressed by updating to version 8.44.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

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

CVSSv2info

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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 11.2

Timelineinfo

06/15/2020 🔍
02/01/2021 +231 days 🔍
02/01/2021 +0 days 🔍
02/03/2021 +2 days 🔍
02/23/2021 +20 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212147
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-20838 (🔍)
GCVE (CVE): GCVE-0-2019-20838
GCVE (VulDB): GCVE-100-169111
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 02/03/2021 14:10
Updated: 02/23/2021 08:13
Changes: 02/03/2021 14:10 (17), 02/03/2021 14:13 (29), 02/23/2021 08:13 (3)
Complete: 🔍
Cache ID: 216::103

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