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Exploited vulnerability · CISA KEV

Is CVE-2020-1956 exploited? Yes: in CISA KEV since 25 Mar 2022

Gociux · Apache Kylin · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2020-1956, Apache Kylin OS Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 25 Mar 2022, 672 days after it was published. It affects Apache Kylin. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 25 Mar 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity8.8CVSS 3.1 · high
US federal due15 Apr 2022BOD 22-01 deadline

What it is

Apache Kylin contains an OS command injection vulnerability which could permit an attacker to perform remote code execution.

VendorApache (41 exploited CVEs in KEV)
ProductKylin
VulnerabilityApache Kylin OS Command Injection Vulnerability
WeaknessCWE-78
Published22 May 2020
Added to KEV25 Mar 2022
Reported by (CNA)apache

What to do

  1. Check whether you run it. Look for Kylin in your asset inventory, including appliances and cloud images. Stack check lists every exploited Apache 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 22 May 2020.
  4. Get told next time. Email alerts when CISA adds a CVE for Apache.

References

Questions

Is CVE-2020-1956 being exploited?

Yes. CISA added CVE-2020-1956 to the Known Exploited Vulnerabilities catalog on 25 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-1956 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-2020-1956?

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

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