#VU14814 Buffer overflow in NUUO NVRmini 2 - CVE-2018-1149

Vulnerability identifier: #VU14814

Vulnerability risk: High

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2018-1149

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
NUUO NVRmini 2
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: NUUO Inc.

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing large cookie file passed to "/cgi-bin/cgi_system?cmd=portCheck" script. A remote unauthenticated attacker can send a specially crafted HTTP request to the affected device, trigger buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

NUUO NVRmini 2: 3.0.0.63 - 3.8.0

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External links
https://github.com/tenable/poc/tree/master/nuuo/nvrmini2
https://www.nuuo.com/backend/CKEdit/upload/files/NUUO_NVRsolo_v3_9_1_Release%20note.pdf
https://www.tenable.com/security/research/tra-2018-25

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.