SB2020112002 - Usage of weak PRNG in Rclone
Published: November 20, 2020
Security Bulletin ID
SB2020112002
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CVE-ID: CVE-2020-28924)
CWE-ID: CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows an attacker to decrypt or brute-force passwords.
The vulnerability exists due to Rclone uses a weak random number generator for generating passwords with much less entropy than advertised. An attacker, who is able to obtain the password protected file can decrypt data.
Remediation
Install update from vendor's website.