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Exploited vulnerability · CISA KEV

Is CVE-2018-11138 exploited? Yes: in CISA KEV since 25 Mar 2022

Gociux · Quest KACE System Management Appliance · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2018-11138, Quest KACE System Management Appliance Remote Command Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 25 Mar 2022, 1394 days after it was published. It is known to be used in ransomware campaigns. It affects Quest KACE System Management Appliance. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 25 Mar 2022
ransomwareKnownused in campaigns
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due15 Apr 2022BOD 22-01 deadline

What it is

The '/common/download_agent_installer.php' script in the Quest KACE System Management Appliance is accessible by anonymous users and can be abused to perform remote code execution.

VendorQuest (2 exploited CVEs in KEV)
ProductKACE System Management Appliance
VulnerabilityQuest KACE System Management Appliance Remote Command Execution Vulnerability
WeaknessCWE-78
Published31 May 2018
Added to KEV25 Mar 2022
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for KACE System Management Appliance in your asset inventory, including appliances and cloud images. Stack check lists every exploited Quest 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 31 May 2018.
  4. Get told next time. Email alerts when CISA adds a CVE for Quest.

References

Questions

Is CVE-2018-11138 being exploited?

Yes. CISA added CVE-2018-11138 to the Known Exploited Vulnerabilities catalog on 25 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2018-11138 used in ransomware attacks?

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

How do I fix CVE-2018-11138?

Apply updates per vendor instructions. Check Quest's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected KACE System Management Appliance 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 2022 · Quest scorecard · act-now radar.

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