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Exploited vulnerability · CISA KEV

Is CVE-2020-10221 exploited? Yes: in CISA KEV since 3 Nov 2021

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

Yes. CVE-2020-10221, rConfig OS Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 605 days after it was published. It affects rConfig. 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
severity8.8CVSS 3.1 · high
US federal due3 May 2022BOD 22-01 deadline

What it is

rConfig lib/ajaxHandlers/ajaxAddTemplate.php contains an OS command injection vulnerability that allows remote attackers to execute OS commands via shell metacharacters in the fileName POST parameter.

VendorrConfig (1 exploited CVE in KEV)
ProductrConfig
VulnerabilityrConfig OS Command Injection Vulnerability
WeaknessCWE-78
Published8 Mar 2020
Added to KEV3 Nov 2021
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for rConfig in your asset inventory, including appliances and cloud images. Stack check lists every exploited rConfig 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 8 Mar 2020.
  4. Get told next time. Email alerts when CISA adds a CVE for rConfig.

References

Questions

Is CVE-2020-10221 being exploited?

Yes. CISA added CVE-2020-10221 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-10221 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-2020-10221?

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

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