Apple iOS, iPadOS, and macOS IOSurfaceAccelerator Out-of-Bounds Write Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2023-04-10
• EPSS: 23% chance of exploitation in the next 30 days (higher than 98% of CVEs)

[ Description ]Official description

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Monterey 12.6.5, iOS 16.4.1 and iPadOS 16.4.1, macOS Ventura 13.3.1, iOS 15.7.5 and iPadOS 15.7.5, macOS Big Sur 11.7.6. An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

CISA: Apple iOS, iPadOS, and macOS IOSurfaceAccelerator contain an out-of-bounds write vulnerability that allows an app to execute code with kernel privileges.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 1 May 2023): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• support.apple.com/en-us/HT213720Release NotesVendor Advisory
• support.apple.com/en-us/HT213721Release NotesVendor Advisory
• support.apple.com/en-us/HT213723Release NotesVendor Advisory
• support.apple.com/en-us/HT213724Release NotesVendor Advisory
• support.apple.com/en-us/HT213725Release NotesVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource