#VU99969 Man-in-the-Middle (MitM) attack in DiskStation Manager (DSM)

Vulnerability identifier: #VU99969

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-300

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
DiskStation Manager (DSM)
Server applications / File servers (FTP/HTTP)

Vendor: Synology Inc.

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to an unspecified error. A remote attacker can obtain a session identifier of an administrative user via a man-in-the-middle (MitM) attack and compromise the affected system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

DiskStation Manager (DSM): before 7.2.2-72806-1

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External links
https://www.synology.com/en-global/security/advisory/Synology_SA_24_20

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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.