Apple iOS/iPadOS up to 13.4.1 Wi-Fi double free

EntryeditHistoryDiffjsonxmlCTI
CVSS Meta Temp Score
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CTI Interest Score
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8.4$25k-$100k0.00

A vulnerability was found in Apple iOS and iPadOS up to 13.4.1 (Smartphone Operating System). It has been rated as very critical. Affected by this issue is some unknown functionality of the component Wi-Fi. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-415. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A double free issue was addressed with improved memory management. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.

The weakness was published 05/20/2020 by Ian Beer with Google Project Zero as HT211168 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2020-9844 since 03/02/2020. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $25k-$100k (estimation calculated on 10/20/2020). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

A double free issue was addressed with improved memory management.

Upgrading to version 13.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

Similar entries are available at 155738, 155739, 155740 and 155741.

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VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

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

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Exploitinginfoedit

Class: Memory corruption
CWE: CWE-415
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS/iPadOS 13.5

Timelineinfoedit

03/02/2020 CVE assigned
05/20/2020 +79 days Advisory disclosed
05/20/2020 +0 days Countermeasure disclosed
05/29/2020 +9 days VulDB entry created
10/20/2020 +144 days VulDB last update

Sourcesinfoedit

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

Advisory: HT211168
Researcher: Ian Beer
Organization: Google Project Zero
Status: Confirmed

CVE: CVE-2020-9844 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔒

Entryinfoedit

Created: 05/30/2020 12:56 AM
Updated: 10/20/2020 10:47 AM
Changes: (1) source_cve_assigned
Complete: 🔍

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