CVE-2018-13859

published 2018-07-17

CVE-2018-13859: MusicCenter / Trivum Multiroom Setup Tool V8.76 - SNR 8604.26 - C4 Professional before V9.34 build 13381 - 12.07.18, allow unauthorized remote attackers to…

Priority P2 72 critical 9.8 CVSS 3.0

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

EXPLOIT

MusicCenter / Trivum Multiroom Setup Tool V8.76 - SNR 8604.26 - C4 Professional before V9.34 build 13381 - 12.07.18, allow unauthorized remote attackers to reset the authentication via the "/xml/system/setAttribute.xml" URL, using the GET request "?id=0&attr=protectAccess&newValue=0" (a successful attack will allow attackers to login without authorization).

Affected

1 ranges

Vendor	Product	Version range	Fixed in
trivum	c4_professional_firmware	—	—

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

url /xml/system/setAttribute.xml?id=0&attr=protectAccess&newValue=0↗

path /xml/system/setAttribute.xml↗

command GET /xml/system/setAttribute.xml?id=0&attr=protectAccess&newValue=0↗

• → Detect unauthenticated GET requests to the setAttribute.xml endpoint with the protectAccess parameter set to 0, which disables authentication on the device. ↗
• → Alert on any HTTP GET request containing both 'attr=protectAccess' and 'newValue=0' query parameters targeting Trivum/MusicCenter devices, as this is the exact exploit payload for auth bypass. ↗

• · The vulnerability affects versions before V9.34 build 13381 (12.07.18); ensure devices are identified by firmware version during triage to avoid false positives on patched systems. ↗
• · The attack is delivered via a simple unauthenticated GET request (CSRF vector), meaning it can be triggered by a victim browsing a malicious page — no direct network access to the device by the attacker is strictly required. ↗

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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