CVE-2023-28835CWE-338

Insecure randomness for default password in nextcloud

Low · published March 30, 2023

CVSS v3.1
3.5
EPSS
1%
Percentile
44.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.5 · LOW
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00540 · 44.6th percentile
Weakness
CWE-338 · Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Published
2023-03-30T18:57Z
EPSS history
Timeline
  • 30 MAR 18:57Z
    Insecure randomness for default password in nextcloud
    cvelistv5