CVE-2016-15047: Command Injection

Description

AVTECH devices that include the CloudSetup.cgi management endpoint are vulnerable to authenticated OS command injection. The `exefile` parameter in CloudSetup.cgi is passed to the underlying system command execution without proper validation or whitelisting. An authenticated attacker who can invoke this endpoint can supply crafted input to execute arbitrary system commands as root. Successful exploitation grants full control of the device, and - depending on deployment and whether the device stores credentials or has network reachability to internal systems - may enable credential theft, lateral movement, or data exfiltration. The archived SEARCH-LAB disclosure implies that this vulnerability was remediated in early 2017, but AVTECH has not defined an affected version range.

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Weakness Type (CWE)

CWE-78 OS Command Injection

References

Other References

https://web.archive.org/web/20170420145806/http://www.search-lab.hu/media/vulnerability_matrix.txt https://web.archive.org/web/20240810225729/https://www.search-lab.hu/advisories/126-AVTech-devices-multiple-vulnerabilities https://www.exploit-db.com/exploits/40500 https://www.sonicwall.com/blog/attackers-actively-targeting-vulnerable-avtech-devices https://www.trendmicro.com/en_us/research/17/c/new-linux-malware-exploits-cgi-vulnerability.html https://www.vulncheck.com/advisories/avtech-cloudsetup-cgi-auth-command-injection

Frequently Asked Questions

What is CVE-2016-15047? +

AVTECH devices that include the CloudSetup.cgi management endpoint are vulnerable to authenticated OS command injection. The `exefile` parameter in CloudSetup.cgi is passed to the underlying system command execution without proper validation or whitelisting. An authenticated attacker who can invoke this endpoint can supply crafted input to execute arbitrary system commands as root. Successful exploitation grants full control of the device, and - depending on deployment and whether the device stores credentials or has network reachability to internal systems - may enable credential theft, lateral movement, or data exfiltration. The archived SEARCH-LAB disclosure implies that this vulnerability was remediated in early 2017, but AVTECH has not defined an affected version range.

How do I check if I'm vulnerable to CVE-2016-15047? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2016-15047