high
7.6
CWE
362
Advisory Published
CVE Published
Updated

CVE-2018-4166: Race Condition

First published: Thu Mar 29 2018(Updated: )

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "NSURLSession" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

Credit: Samuel Groß @5aelo Samuel Groß @5aelo Samuel Groß @5aelo Samuel Groß @5aelo product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iPhone OS<11.3
Apple Mac OS X<10.13.4
Apple tvOS<11.3
Apple watchOS<4.3
Apple watchOS<4.3
4.3
Apple tvOS<11.3
11.3
Apple iOS<11.3
11.3
Apple macOS High Sierra<10.13.4
10.13.4
Apple Sierra
Apple El Capitan

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2018-4166.

  • Which Apple products are affected by CVE-2018-4166?

    iOS before 11.3, macOS before 10.13.4, tvOS before 11.3, and watchOS before 4.3 are affected.

  • What is the severity of CVE-2018-4166?

    The severity of CVE-2018-4166 is high.

  • How can an attacker exploit CVE-2018-4166?

    An attacker can exploit CVE-2018-4166 by leveraging a race condition to execute arbitrary code in a privileged context.

  • How can I fix CVE-2018-4166?

    To fix CVE-2018-4166, update to the latest available version of iOS, macOS, tvOS, or watchOS depending on the affected product.

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