Apple iOS up to 11.2 NSURLSession race condition

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

A vulnerability classified as critical has been found in Apple iOS up to 11.2 (Smartphone Operating System). Affected is an unknown code of the component NSURLSession. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 03/29/2018. The weakness was presented 03/29/2018 as HT208693 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2018-4166 since 01/02/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The advisory points out:

A race condition was addressed with additional validation.

The vulnerability scanner Nessus provides a plugin with the ID 108786 (macOS 10.13.x < 10.13.4 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370851 (Apple macOS High Sierra 10.13.4, Security Update 2018-002 Sierra, and Security Update 2018-002 El Capitan Not Installed).

Upgrading to version 11.3 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (108786). See VDB-115299, VDB-115296, VDB-115297 and VDB-115298 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 108786
Nessus Name: macOS 10.13.x < 10.13.4 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 866454
OpenVAS Name: Apple MacOSX Security Updates(HT208692)-02
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS 11.3

Timelineinfo

01/02/2018 🔍
03/29/2018 +86 days 🔍
03/29/2018 +0 days 🔍
03/29/2018 +0 days 🔍
03/31/2018 +2 days 🔍
04/02/2018 +2 days 🔍
04/03/2018 +1 days 🔍
02/24/2023 +1788 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208693
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-4166 (🔍)
SecurityFocus: 101274
SecurityTracker: 1040604

scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 03/31/2018 07:26 PM
Updated: 02/24/2023 07:02 PM
Changes: 03/31/2018 07:26 PM (67), 01/18/2020 05:35 PM (12), 02/06/2021 05:04 PM (4), 02/24/2023 07:02 PM (3)
Complete: 🔍
Cache ID: 18:D6C:40

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