Known exploited vulnerability
CVE-2023-32439
The short answer
CVE-2023-32439 affects Apple iOS and iPadOS and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2023-06-23: attackers are using it, so patch it first.
What it is
A type confusion issue was addressed with improved checks. This issue is fixed in iOS 16.5.1 and iPadOS 16.5.1, iOS 15.7.7 and iPadOS 15.7.7, macOS Ventura 13.4.1, Safari 16.5.1. 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.
Weakness: CWE-843.
Severity
8.8 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Jun 23, 2023
Federal due date Jul 14, 2023
EPSS, next 30 days
24%
Higher than 98% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
iOS and iPadOS, Safari, macOS. NVD's record lists the exact affected versions.
References
- security.gentoo.org/glsa/202401-04 Third Party Advisory
- support.apple.com/en-us/HT213811 Release NotesVendor Advisory
- support.apple.com/en-us/HT213813 Release NotesVendor Advisory
- support.apple.com/en-us/HT213814 Release NotesVendor Advisory
- support.apple.com/en-us/HT213816 Release NotesVendor Advisory
- support.apple.com/kb/HT213814 Vendor Advisory
- support.apple.com/kb/HT213816 Vendor Advisory
- security.gentoo.org/glsa/202401-04 Third Party Advisory
- support.apple.com/en-us/HT213811 Release NotesVendor Advisory
- support.apple.com/en-us/HT213813 Release NotesVendor Advisory
- support.apple.com/en-us/HT213814 Release NotesVendor Advisory
- support.apple.com/en-us/HT213816 Release NotesVendor Advisory
Questions
Is CVE-2023-32439 being exploited?
Yes. CISA added CVE-2023-32439 to its Known Exploited Vulnerabilities catalog on 2023-06-23, with a federal remediation due date of 2023-07-14.
How do I fix CVE-2023-32439?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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