Apple iOS Webkit Memory Corruption Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-05-24
• EPSS: 67% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official description

WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

CISA: Apple iOS WebKit contains a memory corruption vulnerability that allows attackers to execute remote code or cause a denial-of-service (DoS) via a crafted web site. 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 14 Jun 2022): 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

• lists.apple.com/archives/security-announce/2016/Aug/msg00000.htmlBroken LinkMailing ListVendor Advisory
• www.securityfocus.com/bid/92653Broken LinkThird Party AdvisoryVDB Entry
• www.securitytracker.com/id/1036694Broken LinkThird Party AdvisoryVDB Entry
• blog.lookout.com/blog/2016/08/25/trident-pegasusBroken Link
• support.apple.com/HT207107Release NotesVendor Advisory
• www.exploit-db.com/exploits/44836ExploitThird Party AdvisoryVDB Entry
• www.youtube.com/watchExploit
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource