CVE-2020-28924

HIGH
7.5
CVSS Score
Published: November 19, 2020 at 07:32 PM UTC
Updated: June 17, 2026 at 03:10 AM UTC
2 products affected across 2 vendorsFedoraRclone

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.53.3
Affected range stops below 1.53.3, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-331CWE-338

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