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Desktop client does not verify received singed certificate in end-to-end encryption

Moderate
nickvergessen published GHSA-h82x-98q3-7534 Apr 4, 2023

Package

Desktop (Nextcloud)

Affected versions

>= 3.0.0

Patched versions

3.7.0

Description

Impact

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.

Patches

It is recommended that the Nextcloud Desktop client is upgraded to 3.7.0

Workarounds

  • No workaround available

References

For more information

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Severity

Moderate
5.4
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVE ID

CVE-2023-29000

Weaknesses