Denial of service in NEC Platforms UNIVERGE Aspire series PBX



Published: 2021-03-22
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-20677
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		UNIVERGE Aspire WX
Server applications / Conferencing, Collaboration and VoIP solutions

UNIVERGE Aspire UX
Server applications / Conferencing, Collaboration and VoIP solutions

UNIVERGE SV9100
Server applications / Conferencing, Collaboration and VoIP solutions

SL2100
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor NEC Corporation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU51589

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20677

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in remote system maintenance feature. A remote authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

UNIVERGE Aspire WX: 1.00 - 3.51

UNIVERGE Aspire UX: 1.00 - 9.70

UNIVERGE SV9100: 1.00 - 10.70

SL2100: 1.00 - 3.00

External links

http://jvn.jp/en/jp/JVN12737530/index.html
http://www.necplatforms.co.jp/press/files/SVSLSecurityAdvisoryR1.0_20210322.pdf


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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



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