Microsoft Internet Explorer Use-After-Free Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-05-04
• EPSS: 85% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via vectors involving crafted JavaScript code, CMarkup, and the onpropertychange attribute of a script element, as exploited in the wild in January and February 2014.

CISA: Use-after-free vulnerability in Microsoft Internet Explorer allows remote attackers to execute code.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 25 May 2022): Apply updates per vendor instructions.

• Patch on technet.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
• Patch on docs.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• community.websense.com/blogs/securitylabs/archive/2014/02/13/msie-0-day-exploit-cve-201…Broken LinkPermissions Required
• technet.microsoft.com/security/advisory/2934088PatchVendor Advisory
• twitter.com/nanoc0re/statuses/434251658344673281Press/Media Coverage
• www.exploit-db.com/exploits/32851ExploitThird Party AdvisoryVDB Entry
• www.exploit-db.com/exploits/32904ExploitThird Party AdvisoryVDB Entry
• www.fireeye.com/blog/technical/cyber-exploits/2014/02/new-ie-zero-day-found-in-watering…Broken Link
• www.fireeye.com/blog/uncategorized/2014/02/operation-snowman-deputydog-actor-compromise…Broken Link
• www.kb.cert.org/vuls/id/732479Third Party AdvisoryUS Government Resource
• www.osvdb.org/103354Broken Link
• docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-012PatchVendor Advisory
• www.dropbox.com/s/pyxjgycmudirbqe/CVE-2014-0322.zipBroken LinkExploit
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource