SB2019112612 - Weak pseudo-random number generator in NetBSD
Published: November 26, 2019
Security Bulletin ID
SB2019112612
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local 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: N/A)
CWE-ID: CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to predict values of random generator.
The vulnerability exists due to en error in kern.arandom implementation. A local user that can obtain kernel PRNG state used by kern.arandom can predict future outputs of kern.arandom.
Remediation
Install update from vendor's website.