#VU30136 Man-in-the-Middle (MitM) attack in DiskStation Manager (DSM) and SkyNAS

Vulnerability identifier: #VU30136

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-300

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
DiskStation Manager (DSM)
Server applications / File servers (FTP/HTTP)
SkyNAS
Server applications / Other server solutions

Vendor: Synology Inc.

Description

The vulnerability allows a remote attacker to perform a Man-in-the-Middle (MitM) attack.

The vulnerability exists due to an unspecified error. A remote attacker with ability to intercept traffic can perform a Man-in-the-Middle (MitM) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

DiskStation Manager (DSM): 6.2.1-23824 - 6.2.3-25426-1

SkyNAS: All versions

---

External links
https://www.synology.com/cs-cz/security/advisory/Synology_SA_20_18

---

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.