CVE-2023-28835 Vulnerability Details

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CVE-2023-28835 Metadata Quick Info

CVE Published: 30/03/2023 | CVE Updated: 02/08/2024 | CVE Year: 2023
Source: GitHub_M | Vendor: nextcloud | Product: security-advisories
Status : PUBLISHED

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CVE-2023-28835 Description

Nextcloud server is an open source home cloud implementation. In affected versions the generated fallback password when creating a share was using a weak complexity random number generator, so when the sharer did not change it the password could be guessable to an attacker willing to brute force it. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. This issue only affects users who do not have a password policy enabled, so enabling a password policy is an effective mitigation for users unable to upgrade.

Metrics

CVSS Version: 3.1 | Base Score: 3.5 LOW
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

l➤ Exploitability Metrics:
    Attack Vector (AV)* NETWORK
    Attack Complexity (AC)* LOW
    Privileges Required (PR)* LOW
    User Interaction (UI)* REQUIRED
    Scope (S)* UNCHANGED

l➤ Impact Metrics:
    Confidentiality Impact (C)* LOW
    Integrity Impact (I)* NONE
    Availability Impact (A)* NONE

Weakness Enumeration (CWE)

CWE-ID: CWE-338
CWE Name: CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Source: nextcloud

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-ID:
CAPEC Description:


Source: NVD (National Vulnerability Database).