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HighPublic exploit

Authenticated OS Command Injection in AVTECH CloudSetup.cgi

IdentifiersCVE-2016-15047CWE-78· Improper Neutralization of Special…

CVE-2016-15047 is an authenticated OS command injection vulnerability affecting AVTECH devices that expose the CloudSetup.cgi management endpoint. The flaw is in the handling of the exefile parameter, which is passed to an underlying system command execution path without proper validation, sanitization, or whitelisting. An authenticated attacker able to access CloudSetup.cgi can supply crafted exefile input to inject and execute arbitrary operating system commands. The available reporting indicates commands execute with root privileges on the device. The vendor has not defined a precise affected version range, but archived third-party disclosure material suggests the issue was remediated in early 2017.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation results in full compromise of the affected AVTECH device. Because injected commands execute as root, an attacker can take complete control of the system, alter configuration, deploy malware, create persistence, disable services, and access locally stored data and credentials. Depending on how the device is deployed, compromise may also enable credential theft, surveillance or data exfiltration, and use of the device as a pivot point for lateral movement into adjacent internal networks.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, disable CloudSetup.cgi where operationally feasible. Restrict access to the management endpoint to trusted administrative networks only, using network ACLs, firewall rules, VPN-only access, or equivalent segmentation controls. Do not expose the management interface directly to the internet. Monitor for suspicious requests to CloudSetup.cgi, especially crafted exefile values, and rotate any credentials stored on or accessible from the device if compromise is suspected. Where code or compensating controls are available, enforce strict validation and sanitization or allowlisting of the exefile parameter.

Remediation

Patch, then assume compromise.

Update affected AVTECH device firmware to the latest available version that remediates the CloudSetup.cgi command injection issue. Because AVTECH has not published a clear affected version range in the provided material, operators should review vendor firmware history and prioritize upgrading any device exposing CloudSetup.cgi, especially older deployments likely predating early 2017 fixes. After upgrading, verify that CloudSetup.cgi no longer passes attacker-controlled exefile input into system command execution without strict validation or allowlisting.
PUBLIC EXPLOITS

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Threat actor evidence

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Associated malware4

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

Community discussion across Reddit, Mastodon, and other social sources.

Authenticated OS Command Injection in AVTECH CloudSetup.cgi (CVE-2016-15047) | Mallory