CVE-2023-32373

Apple Multiple Products WebKit Use-After-Free

8.8 HIGHActively exploited (CISA KEV)EPSS 12.2%

Published23 Jun 2023
Added to CISA KEV22 May 2023
Remediation due12 Jun 2023

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.6 and iPadOS 15.7.6, Safari 16.5, iOS 16.5 and iPadOS 16.5. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Apple Safari< 16.5

Webkitgtk Webkitgtk+< 2.42.3

Apple iPadOS≥ 16.0 < 16.5 · < 15.7.6

Apple iPhone OS≥ 15.0 < 15.7.6 · ≥ 16.0 < 16.5

Apple macOS< 13.4

Apple Tvos< 16.5

Apple Watchos< 9.5

Redhat Enterprise Linux6.0 · 7.0 · 8.0 · 9.0

Remediation

Fixed in

Apple Safari≥ 16.5

Webkitgtk Webkitgtk+≥ 2.42.3

Apple iPadOS≥ 16.5

Apple iPhone OS≥ 15.7.6

Apple macOS≥ 13.4

Apple Tvos≥ 16.5

Apple Watchos≥ 9.5

Patch & vendor advisories

References

https://security.gentoo.org/glsa/202401-04Third Party Advisory
https://support.apple.com/en-us/HT213757Release NotesVendor Advisory
https://support.apple.com/en-us/HT213758Release NotesVendor Advisory
https://support.apple.com/en-us/HT213761Release NotesVendor Advisory
https://support.apple.com/en-us/HT213762Release NotesVendor Advisory
https://support.apple.com/en-us/HT213764Release NotesVendor Advisory
https://support.apple.com/en-us/HT213765Release NotesVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-32373US Government Resource

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2023-32373 being actively exploited?

Yes. CVE-2023-32373 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 22 May 2023.

How severe is CVE-2023-32373?

CVE-2023-32373 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 12.2% probability of exploitation.

Which products are affected by CVE-2023-32373?

Affected products include Apple Safari, Webkitgtk Webkitgtk+, Apple iPadOS, Apple iPhone OS, Apple macOS, and 3 more.

How do I fix CVE-2023-32373?

Upgrade affected software to a fixed version, for example Apple Safari 16.5, Webkitgtk Webkitgtk+ 2.42.3, Apple iPadOS 16.5 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-32373 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. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.