Exploited vulnerability · CISA KEV

Is CVE-2017-0147 exploited? Yes: in CISA KEV since 24 May 2022

Gociux · Microsoft SMBv1 server · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2017-0147, Microsoft Windows SMBv1 Information Disclosure Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 24 May 2022, 1894 days after it was published. It is known to be used in ransomware campaigns. It affects Microsoft SMBv1 server. If you run it, CISA's required action is: Apply updates per vendor instructions.

What it is

The SMBv1 server in Microsoft Windows allows remote attackers to obtain sensitive information from process memory via a crafted packet.

What to do

1. Check whether you run it. Look for SMBv1 server in your asset inventory, including appliances and cloud images. Stack check lists every exploited Microsoft CVE at once.
2. Apply the fix. Apply updates per vendor instructions.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 17 Mar 2017.
4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

Other exploited CVEs in SMBv1 server

• CVE-2017-0148: Microsoft SMBv1 Server Remote Code Execution Vulnerability (6 Apr 2022)

References

• nvd.nist.gov/vuln/detail/CVE-2017-0147

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in May 2022 · Microsoft scorecard · act-now radar.