Cross-site WebSocket hijacking in Movim

1) Origin validation error

EUVDB-ID: #VU81490

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-2848

CWE-ID: CWE-346 - Origin Validation Error

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to an origin validation error when processing headers. A remote attacker can perform cross-site WebSocket hijacking and perform spoofing attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Movim: 0.1 - 0.21.1

CPE2.3

• cpe:2.3:a:movim:movim:0.1:*:*:*:*:*:*:*
• cpe:2.3:a:movim:movim:0.2:*:*:*:*:*:*:*
• cpe:2.3:a:movim:movim:0.3:*:*:*:*:*:*:*

External links

https://github.com/movim/movim/commit/49e2012aecdf918bb1d16f278fa9ff42fad29a9d
https://mov.im/node/pubsub.movim.eu/Movim/a2d05925-0427-4f3f-b777-d20571ddddff
https://github.com/movim/movim/commit/96372082acd3e5d778a2522a60a1805bf2af31f6

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.