Microsoft SMBv1 Server Remote Code Execution Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-04-06
• 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

The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; and Windows 10 Gold, 1511, and 1607; and Windows Server 2016 allows remote attackers to execute arbitrary code via crafted packets, aka "Windows SMB Remote Code Execution Vulnerability." This vulnerability is different from those described in CVE-2017-0143, CVE-2017-0144, CVE-2017-0145, and CVE-2017-0146.

CISA: The SMBv1 server in Microsoft allows remote attackers to execute arbitrary code via crafted packets.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 27 Apr 2022): Apply updates per vendor instructions.

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

[ References ]References

• packetstormsecurity.com/files/154690/DOUBLEPULSAR-Payload-Execution-Neutralization.htmlExploitThird Party AdvisoryVDB Entry
• packetstormsecurity.com/files/156196/SMB-DOUBLEPULSAR-Remote-Code-Execution.htmlExploitThird Party AdvisoryVDB Entry
• www.securityfocus.com/bid/96706Broken LinkThird Party AdvisoryVDB Entry
• www.securitytracker.com/id/1037991Broken LinkThird Party AdvisoryVDB Entry
• cert-portal.siemens.com/productcert/pdf/ssa-701903.pdfThird Party Advisory
• cert-portal.siemens.com/productcert/pdf/ssa-966341.pdfThird 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-2017-0148PatchVendor Advisory
• www.exploit-db.com/exploits/41891ExploitThird Party AdvisoryVDB Entry
• www.exploit-db.com/exploits/41987ExploitThird Party AdvisoryVDB Entry
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource