Apple Multiple Products WebKit Out-of-Bounds Read Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2023-05-22
• EPSS: 14% chance of exploitation in the next 30 days (higher than 97% of CVEs)

[ Description ]Official description

An out-of-bounds read was addressed with improved input validation. 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 web content may disclose sensitive information. Apple is aware of a report that this issue may have been actively exploited.

CISA: Apple iOS, iPadOS, macOS, tvOS, watchOS, and Safari WebKit contain an out-of-bounds read vulnerability that may disclose sensitive information when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 12 Jun 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

• security.gentoo.org/glsa/202401-04Third Party Advisory
• support.apple.com/en-us/HT213757Release NotesVendor Advisory
• support.apple.com/en-us/HT213758Release NotesVendor Advisory
• support.apple.com/en-us/HT213761Release NotesVendor Advisory
• support.apple.com/en-us/HT213762Release NotesVendor Advisory
• support.apple.com/en-us/HT213764Release NotesVendor Advisory
• support.apple.com/en-us/HT213765Release NotesVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource