Vulnerabilities > CVE-2020-28924 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) vulnerability in multiple products

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

NONE

Availability impact

NONE

network

low complexity

rclone

fedoraproject

CWE-338

NVD

Published: 2020-11-19

Updated: 2024-11-21

Summary

An issue was discovered in Rclone before 1.53.3. Due to the use of a weak random number generator, the password generator has been producing weak passwords with much less entropy than advertised. The suggested passwords depend deterministically on the time the second rclone was started. This limits the entropy of the passwords enormously. These passwords are often used in the crypt backend for encryption of data. It would be possible to make a dictionary of all possible passwords with about 38 million entries per password length. This would make decryption of secret material possible with a plausible amount of effort. NOTE: all passwords generated by affected versions should be changed.

Vulnerable Configurations

Part	Description	Count
Application	Rclone Rclone Rclone 0.90 Rclone Rclone 0.91 Rclone Rclone 0.92 Rclone Rclone 0.93 Rclone Rclone 0.94 Rclone Rclone 0.95 Rclone Rclone 0.96 Rclone Rclone 0.97 Rclone Rclone 0.98 Rclone Rclone 0.99 Rclone Rclone 1.00 Rclone Rclone 1.01 Rclone Rclone 1.02 Rclone Rclone 1.03 Rclone Rclone 1.04 Rclone Rclone 1.05 Rclone Rclone 1.06 Rclone Rclone 1.07 Rclone Rclone 1.08 Rclone Rclone 1.09 Rclone Rclone 1.10 Rclone Rclone 1.11 Rclone Rclone 1.12 Rclone Rclone 1.13 Rclone Rclone 1.14 Rclone Rclone 1.15 Rclone Rclone 1.16 Rclone Rclone 1.17 Rclone Rclone 1.18 Rclone Rclone 1.19 Rclone Rclone 1.20 Rclone Rclone 1.21 Rclone Rclone 1.22 Rclone Rclone 1.23 Rclone Rclone 1.24 Rclone Rclone 1.25 Rclone Rclone 1.26 Rclone Rclone 1.27 Rclone Rclone 1.28 Rclone Rclone 1.29 Rclone Rclone 1.30 Rclone Rclone 1.31 Rclone Rclone 1.32 Rclone Rclone 1.33 Rclone Rclone 1.34 Rclone Rclone 1.35 Rclone Rclone 1.36 Rclone Rclone 1.37 Rclone Rclone 1.38 Rclone Rclone 1.39 Rclone Rclone 1.40 Rclone Rclone 1.41 Rclone Rclone 1.42 Rclone Rclone 1.43 Rclone Rclone 1.43.1 Rclone Rclone 1.44 Rclone Rclone 1.45 Rclone Rclone 1.46 Rclone Rclone 1.47.0 Rclone Rclone 1.48.0 Rclone Rclone 1.49.0 Rclone Rclone 1.49.1 Rclone Rclone 1.49.2 Rclone Rclone 1.49.3 Rclone Rclone 1.49.4 Rclone Rclone 1.49.5 Rclone Rclone 1.50.0 Rclone Rclone 1.50.1 Rclone Rclone 1.50.2 Rclone Rclone 1.51.0 Rclone Rclone 1.52.0 Rclone Rclone 1.52.1 Rclone Rclone 1.52.2 Rclone Rclone 1.52.3 Rclone Rclone 1.53.0 Rclone Rclone 1.53.1 Rclone Rclone 1.53.2	77
OS	Fedoraproject Fedoraproject Fedora 33	1

Common Weakness Enumeration (CWE)

CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

References