CVE-2017-13067

published 2017-09-14

CVE-2017-13067: QNAP has patched a remote code execution vulnerability affecting the QTS Media Library in all versions prior to QTS 4.2.6 build 20170905 and QTS 4.3.3.0299…

Priority P2 75 critical 9.8 CVSS 3.0

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

EXPLOIT

QNAP has patched a remote code execution vulnerability affecting the QTS Media Library in all versions prior to QTS 4.2.6 build 20170905 and QTS 4.3.3.0299 build 20170901. This particular vulnerability allows a remote attacker to execute commands on a QNAP NAS using a transcoding service on port 9251. A remote user does not require any privileges to successfully execute an attack.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
qnap	qts	4.2.0 – 4.2.6	—
qnap	qts	4.3.0 – 4.3.3.0299	—
qnap	qts_media_libary_product	—	—
qnap	qts_media_libary_product	—	—

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

port 9251↗

command rmfile↗

• → Monitor for unauthenticated inbound connections to TCP port 9251 on QNAP NAS devices, which is the default listening port for the vulnerable transcoding service. ↗
• → Inspect traffic to port 9251 for use of the 'rmfile' command, which is the specific command vector used for injection in this exploit. ↗
• → No authentication is required to exploit this vulnerability; any connection from an external/untrusted source to port 9251 should be treated as suspicious. ↗

• · Vulnerability affects all QTS versions prior to QTS 4.2.6 build 20170905 and QTS 4.3.3.0299 build 20170901; detections should be scoped to unpatched devices running older firmware. ↗
• · The Metasploit module was validated against firmware version 4.3.3.0262 (20170727) on a QNAP TS-431; detections may need tuning for other hardware/firmware combinations. ↗

CVSS provenance

nvd v3.0 9.8 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 7.5 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P

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