Microsoft Office and WordPad Remote Code Execution Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03
• Known to be used in ransomware campaigns
• EPSS: 99% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

Microsoft Office 2007 SP3, Microsoft Office 2010 SP2, Microsoft Office 2013 SP1, Microsoft Office 2016, Microsoft Windows Vista SP2, Windows Server 2008 SP2, Windows 7 SP1, Windows 8.1 allow remote attackers to execute arbitrary code via a crafted document, aka "Microsoft Office/WordPad Remote Code Execution Vulnerability w/Windows API."

CISA: Microsoft Office and WordPad contain an unspecified vulnerability due to the way the applications parse specially crafted files. Successful exploitation allows for remote code execution.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 May 2022): Apply updates per vendor instructions.

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

[ References ]References

• rewtin.blogspot.nl/2017/04/cve-2017-0199-practical-exploitation-poc.htmlExploitThird Party Advisory
• www.securityfocus.com/bid/97498Broken LinkThird Party AdvisoryVDB Entry
• www.securitytracker.com/id/1038224Broken LinkThird Party AdvisoryVDB Entry
• blog.nviso.be/2017/04/12/analysis-of-a-cve-2017-0199-malicious-rtf-documentExploitThird Party Advisory
• ics-cert.us-cert.gov/advisories/ICSMA-18-058-02Third Party AdvisoryUS Government Resource
• portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0199PatchVendor Advisory
• www.exploit-db.com/exploits/41894ExploitThird Party AdvisoryVDB Entry
• www.exploit-db.com/exploits/41934ExploitThird Party AdvisoryVDB Entry
• www.exploit-db.com/exploits/42995Third Party AdvisoryVDB Entry
• www.fireeye.com/blog/threat-research/2017/04/cve-2017-0199_useda.htmlBroken LinkExploitThird Party Advisory
• www.mdsec.co.uk/2017/04/exploiting-cve-2017-0199-hta-handler-vulnerabilityExploitThird Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource