Multiple vulnerabilities in M-System DL8

Published: 2021-03-15

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-20675 CVE-2021-20676
CWE-ID	CWE-400 CWE-284
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	DL8-A Hardware solutions / Routers & switches, VoIP, GSM, etc DL8-B Hardware solutions / Routers & switches, VoIP, GSM, etc DL8-C Hardware solutions / Routers & switches, VoIP, GSM, etc DL8-D Hardware solutions / Routers & switches, VoIP, GSM, etc DL8-E Hardware solutions / Routers & switches, VoIP, GSM, etc
Vendor

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU51470

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20675

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources. A remote authenticated attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

DL8-A: before 3.0.81

DL8-B: before 3.0.77

DL8-C: before 3.0.99

DL8-D: before 3.0.91

DL8-E: before 3.0.12

External links

http://jvn.jp/en/jp/JVN47497535/index.html
http://www.m-system.co.jp/download_w/dl_dl8updaterE.html

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.

2) Improper Access Control

EUVDB-ID: #VU51471

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20676

CWE-ID: CWE-284 - Improper Access Control