Microsoft Edge and Internet Explorer Type Confusion Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-03-28
• EPSS: 80% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

Microsoft Internet Explorer 10 and 11 and Microsoft Edge have a type confusion issue in the Layout::MultiColumnBoxBuilder::HandleColumnBreakOnColumnSpanningElement function in mshtml.dll, which allows remote attackers to execute arbitrary code via vectors involving a crafted Cascading Style Sheets (CSS) token sequence and crafted JavaScript code that operates on a TH element.

CISA: Microsoft Edge and Internet Explorer have a type confusion vulnerability in mshtml.dll, which allows remote code execution.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 18 Apr 2022): Apply updates per vendor instructions.

• Patch on portal.msrc.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• www.securityfocus.com/bid/96088Broken LinkThird Party AdvisoryVDB Entry
• www.securitytracker.com/id/1037905Broken LinkThird Party AdvisoryVDB Entry
• www.securitytracker.com/id/1037906Broken LinkThird Party AdvisoryVDB Entry
• 0patch.blogspot.si/2017/03/0patching-another-0-day-internet.htmlExploitThird Party Advisory
• bugs.chromium.org/p/project-zero/issues/detailExploitIssue TrackingThird Party Advisory
• portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0037PatchVendor Advisory
• www.exploit-db.com/exploits/41454ExploitThird Party AdvisoryVDB Entry
• www.exploit-db.com/exploits/42354ExploitThird Party AdvisoryVDB Entry
• www.exploit-db.com/exploits/43125ExploitThird Party AdvisoryVDB Entry
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource