CVE-2009-3238

Advisory lineage Upstream: 0 Downstream: 6
Modified
Published: 18 Sept 2009, 10:00
Last modified:07 Aug 2024, 06:22

Vulnerability Summary

Overall Risk (default)
medium
41/100
CVSS Score
7.8 HIGH
v2.0 (nvd)
EPSS Score
0.24% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

18 Sept 2009, 10:00
Published
Vulnerability first disclosed
07 Aug 2024, 06:22
Last Modified
Vulnerability information updated

Description

The get_random_int function in drivers/char/random.c in the Linux kernel before 2.6.30 produces insufficiently random numbers, which allows attackers to predict the return value, and possibly defeat protection mechanisms based on randomization, via vectors that leverage the function's tendency to "return the same value over and over again for long stretches of time."

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  • v2.0•HIGH•Score: 7.8AV:N/AC:L/Au:N/C:C/I:N/A:N

EPSS Trends

Current EPSS score: 0.24%• Percentile: 48%

Techniques & Countermeasures

  • CWE-338•Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

    The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong.

Affected Systems

  • canonical•ubuntu_linux

    6.06 | 8.04 | 8.10 | 9.04

  • linux•linux_kernel

    < 2.6.30

  • opensuse•opensuse

    11.0

  • suse•linux_enterprise_desktop

    10:sp2

  • suse•linux_enterprise_server

    10:sp2

References (13)