// For flags

CVE-2009-3238

kernel: random: add robust get_random_u32, remove weak get_random_int

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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."

La función get_random_int de drivers/char/random.c en el kernel de Linux anterior a v2.6.30, produce números que nos son suficientemente aleatorios, esto permite a los atacantes predecir el valor devuelto y permite que se puedan superar los mecanismos de protección basados en la aleatoriedad, a través de vectores que eleven la tendencia de la función a "devolver el mismo valor una y otra vez durante largos periodos de tiempo".

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2009-09-18 CVE Reserved
  • 2009-09-18 CVE Published
  • 2024-02-15 EPSS Updated
  • 2024-08-07 CVE Updated
  • 2024-08-07 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-330: Use of Insufficiently Random Values
  • CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 < 2.6.30
Search vendor "Linux" for product "Linux Kernel" and version " < 2.6.30"
-
Affected
Canonical
Search vendor "Canonical"
 Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
 6.06
Search vendor "Canonical" for product "Ubuntu Linux" and version "6.06"
-
Affected
Canonical
Search vendor "Canonical"
 Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
 8.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "8.04"
-
Affected
Canonical
Search vendor "Canonical"
 Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
 8.10
Search vendor "Canonical" for product "Ubuntu Linux" and version "8.10"
-
Affected
Canonical
Search vendor "Canonical"
 Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
 9.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "9.04"
-
Affected
Opensuse
Search vendor "Opensuse"
 Opensuse
Search vendor "Opensuse" for product "Opensuse"
 11.0
Search vendor "Opensuse" for product "Opensuse" and version "11.0"
-
Affected
Suse
Search vendor "Suse"
 Linux Enterprise Desktop
Search vendor "Suse" for product "Linux Enterprise Desktop"
 10
Search vendor "Suse" for product "Linux Enterprise Desktop" and version "10"
sp2
Affected
Suse
Search vendor "Suse"
 Linux Enterprise Server
Search vendor "Suse" for product "Linux Enterprise Server"
 10
Search vendor "Suse" for product "Linux Enterprise Server" and version "10"
sp2
Affected