Exploited vulnerability · CISA KEV

Is CVE-2020-14871 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · Oracle Solaris and Zettabyte File System (ZFS) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2020-14871, Oracle Solaris and Zettabyte File System (ZFS) Unspecified Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 378 days after it was published. It affects Oracle Solaris and Zettabyte File System (ZFS). If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 3 Nov 2021

ransomwareNot knownno confirmed use

EPSStop 1%among the most likely CVEs to be exploited

severity10CVSS 3.1 · critical

US federal due3 May 2022BOD 22-01 deadline

What it is

Oracle Solaris and Oracle ZFS Storage Appliance Kit contain an unspecified vulnerability causing high impacts to confidentiality, integrity, and availability of affected systems.

Vendor	Oracle (46 exploited CVEs in KEV)
Product	Solaris and Zettabyte File System (ZFS)
Vulnerability	Oracle Solaris and Zettabyte File System (ZFS) Unspecified Vulnerability
Weakness	CWE-787
Published	21 Oct 2020
Added to KEV	3 Nov 2021
Reported by (CNA)	oracle

What to do

Check whether you run it. Look for Solaris and Zettabyte File System (ZFS) in your asset inventory, including appliances and cloud images. Stack check lists every exploited Oracle CVE at once.
Apply the fix. Apply updates per vendor instructions.
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 21 Oct 2020.
Get told next time. Email alerts when CISA adds a CVE for Oracle.

References

nvd.nist.gov/vuln/detail/CVE-2020-14871

Questions

Is CVE-2020-14871 being exploited?

Yes. CISA added CVE-2020-14871 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-14871 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-2020-14871?

Apply updates per vendor instructions. Check Oracle's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Solaris and Zettabyte File System (ZFS) 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 November 2021 · Oracle scorecard · act-now radar.

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