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Exploited vulnerability · CISA KEV

Is CVE-2020-8816 exploited? Yes: in CISA KEV since 10 Dec 2021

Gociux · Pi-hole AdminLTE · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2020-8816, Pi-Hole AdminLTE Remote Code Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 10 Dec 2021, 560 days after it was published. It affects Pi-hole AdminLTE. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 10 Dec 2021
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.1CVSS 3.0 · critical
US federal due10 Jun 2022BOD 22-01 deadline

What it is

Pi-hole Web v4.3.2 (aka AdminLTE) allows Remote Code Execution by privileged dashboard users via a crafted DHCP static lease.

VendorPi-hole (1 exploited CVE in KEV)
ProductAdminLTE
VulnerabilityPi-Hole AdminLTE Remote Code Execution Vulnerability
WeaknessCWE-78
Published29 May 2020
Added to KEV10 Dec 2021
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for AdminLTE in your asset inventory, including appliances and cloud images. Stack check lists every exploited Pi-hole 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 29 May 2020.
  4. Get told next time. Email alerts when CISA adds a CVE for Pi-hole.

References

Questions

Is CVE-2020-8816 being exploited?

Yes. CISA added CVE-2020-8816 to the Known Exploited Vulnerabilities catalog on 10 Dec 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-8816 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2020-8816?

Apply updates per vendor instructions. Check Pi-hole's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected AdminLTE 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 December 2021 · act-now radar.

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