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Desktop client behaves incorrectly if the initial end-to-end-encryption signature is empty

Moderate
nickvergessen published GHSA-r4qc-m9mj-452v Nov 15, 2024

Package

Desktop (Nextcloud)

Affected versions

>= 3.0.0

Patched versions

3.14.2

Description

Impact

The Desktop client did not stop with an error but allowed by-passing the signature validation, if a manipulated server sends an empty initial signature.

Patches

It is recommended that the Nextcloud Desktop client is upgraded to 3.14.2 or later

Workarounds

  • No workaround available

References

For more information

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Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
High
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N

CVE ID

CVE-2024-52510

Weaknesses

Credits