CVE-2023-40414: Apple Safari use-after-free (CVSS 9.8)

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 10, iOS 17 and iPadOS 17, tvOS 17, macOS Sonoma 14, Safari 17. Processing web content may lead to arbitrary code execution.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Apple Safari< 17.0

Apple iPadOS< 17.0

Apple iPhone OS< 17.0

Apple macOS< 14.0

Apple Tvos< 17.0

Apple Watchos< 10.0

Remediation

Fixed in

Apple Safari≥ 17.0

Apple iPadOS≥ 17.0

Apple iPhone OS≥ 17.0

Apple macOS≥ 14.0

Apple Tvos≥ 17.0

Apple Watchos≥ 10.0

Patch & vendor advisories

References

https://support.apple.com/en-us/HT213936Release NotesVendor Advisory
https://support.apple.com/en-us/HT213937Release NotesVendor Advisory
https://support.apple.com/en-us/HT213938Release NotesVendor Advisory
https://support.apple.com/en-us/HT213940Release NotesVendor Advisory
https://support.apple.com/en-us/HT213941Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2024/02/05/8

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2023-40414 being actively exploited?

CVE-2023-40414 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.15%.

How severe is CVE-2023-40414?

CVE-2023-40414 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.15% probability of exploitation.

Which products are affected by CVE-2023-40414?

Affected products include Apple Safari, Apple iPadOS, Apple iPhone OS, Apple macOS, Apple Tvos, and 1 more.

How do I fix CVE-2023-40414?

Upgrade affected software to a fixed version, for example Apple Safari 17.0, Apple iPadOS 17.0, Apple iPhone OS 17.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-40414 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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