VULNERABILITY INTELLIGENCE
CVE-2011-2705
CVSS score5 MEDIUM
EPSS probability2.25%
CISA KEVNot currently listed
Published2011-08-05
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:N/A:N
Description
The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-dependent attackers to predict the result string by leveraging knowledge of random strings obtained in an earlier process with the same PID.
Weakness classification
- CWE-20: Improper Input Validation