Apple macOS up to 11.1 WebRTC redirect

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.07

A vulnerability, which was classified as problematic, has been found in Apple macOS up to 11.1 (Operating System). This issue affects an unknown functionality of the component WebRTC. The manipulation with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. Impacted is confidentiality, integrity, and availability.

The weakness was released 02/01/2021 by Gregory Vishnepolsky and Ben Seri as HT212147 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2021-1799 since 12/08/2020. The exploitation is known to be easy. The attack can only be done within the local network. The successful exploitation needs a simple authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/23/2021). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

A malicious website may be able to access restricted ports on arbitrary servers

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:

A port redirection issue was addressed with additional port validation.

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CPE 2.3infoedit

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CVSSv3infoedit

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

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

CVSSv2infoedit

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

Exploitinginfoedit

Class: Redirect
CWE: CWE-601
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
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Remediation: 🔍

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Upgrade: macOS 11.2

Timelineinfoedit

12/08/2020 CVE assigned
02/01/2021 +55 days Advisory disclosed
02/01/2021 +0 days Countermeasure disclosed
02/03/2021 +2 days VulDB entry created
02/23/2021 +20 days VulDB last update

Sourcesinfoedit

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

Advisory: HT212147
Researcher: Gregory Vishnepolsky/Ben Seri
Status: Confirmed

CVE: CVE-2021-1799 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfoedit

Created: 02/03/2021 02:15 PM
Updated: 02/23/2021 08:58 AM
Changes: (4) source_cve_assigned vulnerability_cvss2_vuldb_tempscore vulnerability_cvss3_vuldb_tempscore vulnerability_cvss3_meta_tempscore
Complete: 🔍

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