← gociux.comall exploited CVEs

Exploited vulnerability · CISA KEV

Is CVE-2017-7494 exploited? Yes: in CISA KEV since 30 Mar 2023

Gociux · Samba · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2017-7494, Samba Remote Code Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 30 Mar 2023, 2130 days after it was published. It is known to be used in ransomware campaigns. It affects Samba. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 30 Mar 2023
ransomwareKnownused in campaigns
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due20 Apr 2023BOD 22-01 deadline

What it is

Samba contains a remote code execution vulnerability, allowing a malicious client to upload a shared library to a writable share and then cause the server to load and execute it.

VendorSamba (1 exploited CVE in KEV)
ProductSamba
VulnerabilitySamba Remote Code Execution Vulnerability
WeaknessCWE-94
Published30 May 2017
Added to KEV30 Mar 2023
Reported by (CNA)redhat

What to do

  1. Check whether you run it. Look for Samba in your asset inventory, including appliances and cloud images. Stack check lists every exploited Samba 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 30 May 2017.
  4. Get told next time. Email alerts when CISA adds a CVE for Samba.

References

Questions

Is CVE-2017-7494 being exploited?

Yes. CISA added CVE-2017-7494 to the Known Exploited Vulnerabilities catalog on 30 Mar 2023, which means there is reliable evidence of exploitation in the wild.

Is CVE-2017-7494 used in ransomware attacks?

Yes, CISA lists it as known to be used in ransomware campaigns.

How do I fix CVE-2017-7494?

Apply updates per vendor instructions. Check Samba's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Samba and watch it for signs of compromise.

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 March 2023 · act-now radar.

Running Samba in a regulated environment?

We check exposure across your estate, patch or mitigate with your team, and set up detection for what attackers do after exploiting it.

Get in touch →