CVE-2023-28835: nextcloud server

csirt@kutim:~/threat-intel/cve/CVE-2023-28835

CVSS 7.5 · High EPSS 0,54%

Kerentanan Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) pada nextcloud server. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD: 30 Maret 2023
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
EPSS (30 hari): 0,54% peluang dieksploitasi; lebih tinggi dari 43,8% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
nextcloud	nextcloud server	Versi 23.0.0 hingga sebelum 23.0.14
nextcloud	nextcloud server	Versi 24.0.0 hingga sebelum 24.0.10
nextcloud	nextcloud server	Versi 25.0.0 hingga sebelum 25.0.4

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-7w2p-rp9m-9xp9 advisory vendor
https://github.com/nextcloud/server/pull/36093 issue tracking · patch

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.