Vulnerability identifier: #VU49227

Vulnerability risk: Medium

CVSSv3.1: 8.3 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5685

CWE-ID: CWE-78

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
UNIVERGE SV9500
Server applications / Conferencing, Collaboration and VoIP solutions
UNIVERGE SV8500
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor: NEC Corporation

Description

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

The vulnerability exists due to improper input validation. A remote attacker on the local network can send a specially crafted request and execute arbitrary OS commands on the target system.

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

UNIVERGE SV9500: V1 - V7

UNIVERGE SV8500: S6 - S8

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External links
http://jvn.jp/en/jp/JVN38784555/index.html
http://www.necplatforms.co.jp/press/files/SV85Vulnerability_UNIVERGE_Product_E_20210104.pdf

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.