Vulnerability identifier: #VU55977
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-295
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
desktop
Other software /
Other software solutions
Vendor: Nextcloud
Description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the client fails to check if a private key belongs to previously downloaded public certificate. A remote attacker can encrypt the data on the target system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
desktop: 0.0.2 - 3.2.4
External links
http://github.com/nextcloud/security-advisories/security/advisories/GHSA-f5fr-5gcv-6cc5
http://github.com/nextcloud/desktop/pull/3338
http://hackerone.com/reports/1189162
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.