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CVE-2021-40870: Aviatrix Controller Unrestricted Upload of File

criticalknown exploitedpublic exploitCVE-2021-40870
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Unrestricted upload of a file with a dangerous type is possible, which allows an unauthenticated user to execute arbitrary code via directory traversal.

CSIRTS triage

vendor: Aviatrixproduct: ControllerRemote code execution
What
Unrestricted upload of a file with a dangerous type is possible, allowing an unauthenticated user to execute arbitrary code via directory traversal.
Who is affected
Deployments of Aviatrix Controller.
Urgency
Remediation is urgent as the vulnerability is actively exploited and critical.
Action
Implement file upload restrictions and apply any available patches.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-01-18
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-40870

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-40870coverage & exploitation statusNVD · CVE.org

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