CVE-2011-2705

Advisory lineage Upstream: 0 Downstream: 6
Modified
Published: 05 Aug 2011, 21:00
Last modified:06 Aug 2024, 23:08

Vulnerability Summary

Overall Risk (default)
low
20/100
CVSS Score
5 MEDIUM
v2.0 (nvd)
EPSS Score
0.99% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Aug 2011, 21:00
Published
Vulnerability first disclosed
06 Aug 2024, 23:08
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.99%• Percentile: 77%

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

  • ruby-lang•ruby

    ≤ 1.8.7-334 | 1.8.7:p22 | 1.8.7:p71 | 1.8.7:p72 | 1.8.7-160 | 1.8.7-173 | 1.8.7-248 | 1.8.7-249 | 1.8.7-299 | 1.8.7-302 | 1.8.7-330 | 1.8.7-p21 | 1.9 | 1.9:r18423 | 1.9.0 | 1.9.0:r18423 | 1.9.0-0 | 1.9.0-1 | 1.9.0-2 | 1.9.0-20060415 | 1.9.0-20070709 | 1.9.1 | 1.9.1:-p0 | 1.9.1:-p129 | 1.9.1:-p243 | 1.9.1:-p376 | 1.9.1:-p429 | 1.9.1:-preview_1 | 1.9.1:-preview_2 | 1.9.1:-rc1 | 1.9.1:-rc2 | 1.9.2 | 1.9.2:dev | 1.9.2-p136 | 1.9.2-p180

References (15)