CVEvulnerability

CVE-2011-2705

5.0 MEDIUM Published 2011-08-05 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2011-08-05
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-20

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.

Affected configurations

• ruby-lang ruby (<= 1.8.7-334) • ruby-lang ruby 1.8.7 • ruby-lang ruby 1.8.7-160 • ruby-lang ruby 1.8.7-173 • ruby-lang ruby 1.8.7-248 • ruby-lang ruby 1.8.7-249 • ruby-lang ruby 1.8.7-299 • ruby-lang ruby 1.8.7-302 • ruby-lang ruby 1.8.7-330 • ruby-lang ruby 1.8.7-p21 • ruby-lang ruby 1.9 • ruby-lang ruby 1.9.0 • ruby-lang ruby 1.9.0-0 • ruby-lang ruby 1.9.0-1 • ruby-lang ruby 1.9.0-2 • ruby-lang ruby 1.9.0-20060415 • ruby-lang ruby 1.9.0-20070709 • ruby-lang ruby 1.9.1 • ruby-lang ruby 1.9.2 • ruby-lang ruby 1.9.2-p136 • ruby-lang ruby 1.9.2-p180

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References