Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2008-5162

Severity CVSS v4.0:
Pending analysis
Type:
CWE-330 Use of Insufficiently Random Value
Publication date:
26/11/2008
Last modified:
09/04/2025

Description

The arc4random function in the kernel in FreeBSD 6.3 through 7.1 does not have a proper entropy source for a short time period immediately after boot, which makes it easier for attackers to predict the function's return values and conduct certain attacks against the GEOM framework and various network protocols, related to the Yarrow random number generator.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.00 HIGH
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.00
Severity 3.x
HIGH
Vector 2.0
AV:L/AC:M/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.90 MEDIUM
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
6.90
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* 6.4 (including) 7.0 (excluding)
cpe:2.3:o:freebsd:freebsd:6.3:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:6.3:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:6.3:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:6.3:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:6.3:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:6.3:p5:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.0:p5:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.1:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.1:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:7.1:p10:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools