CVE-2023-29000 Nextcloud Desktop client does not verify received singed certificate in end-to-end encryption

2023-04-0412:53:35

CWE-295

GitHub_M

www.cve.org

nextcloud

desktop client

end-to-end encryption

vulnerability

trust attack

nextcloud desktop 3.7.0

5.4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

0.001 Low

EPSS

Percentile

34.5%

JSON

The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.7.0, by trusting that the server will return a certificate that belongs to the keypair of the user, a malicious server could get the desktop client to encrypt files with a key known to the attacker. This issue is fixed in Nextcloud Desktop 3.7.0. No known workarounds are available.

CNA Affected

[
  {
    "vendor": "nextcloud",
    "product": "security-advisories",
    "versions": [
      {
        "version": ">= 3.0.0, < 3.7.0",
        "status": "affected"
      }
    ]
  }
]