SB2018092003 - Multiple vulnerabilities in NUUO NVRMini2

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Buffer overflow (CVE-ID: CVE-2018-1149)

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.

2) Backdoor (CVE-ID: CVE-2018-1150)

The vulnerability allows a remote attacker to gain full access to the affected system.

The vulnerability exists due to presence of backdoor in the source code. A remote unauthenticated attacker can take over user accounts if "/tmp/moses" file is present on the system.

3) Arbitrary file upload (CVE-ID: CVE-2018-11523)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to software allows upload of arbitrary files to the system in /nuuonvr.php script. A remote unauthenticated attacker can upload arbitrary file (e.g. with ".php" extension) and execute it on the server.

Remediation

Install update from vendor's website.

References

• 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
• https://github.com/unh3x/just4cve/issues/1
• https://www.exploit-db.com/exploits/44794/