Vulnerability Name:

CVE-2008-5162 (CCN-46825)

Assigned:2008-11-24
Published:2008-11-24
Updated:2008-12-03
Summary: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.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:6.9 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C)
5.1 Medium (Temporal CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
4.3 Medium (CCN CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N)
3.2 Low (CCN Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-310
CWE-362
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2008-5162

Source: OSVDB
Type: UNKNOWN
50137

Source: CCN
Type: SA32871
FreeBSD "arc4random()" Insufficient Entropy Sources Security Issue

Source: SECUNIA
Type: UNKNOWN
32871

Source: CCN
Type: FreeBSD-SA-08.11.arc4random
arc4random(9) predictable sequence vulnerability

Source: FREEBSD
Type: Vendor Advisory
FreeBSD-SA-08:11

Source: CCN
Type: SECTRACK ID: 1021276
FreeBSD arc4random(9) Generates Predictable Sequences

Source: SECTRACK
Type: UNKNOWN
1021276

Source: CCN
Type: OSVDB ID: 50137
FreeBSD arc4random() Function Entropy Source Weakness

Source: BID
Type: UNKNOWN
32447

Source: CCN
Type: BID-32447
FreeBSD 'arc4random (9)' Pseudo-Random Number Generator Insufficient Entropy Weakness

Source: XF
Type: UNKNOWN
freebsd-arc4random-weak-security(46825)

Vulnerable Configuration:Configuration 1:
  • cpe:/o:freebsd:freebsd:6.3:-:*:*:*:*:*:*
  • OR cpe:/o:freebsd:freebsd:6.4:-:*:*:*:*:*:*
  • OR cpe:/o:freebsd:freebsd:7.0:-:*:*:*:*:*:*
  • OR cpe:/o:freebsd:freebsd:7.1:-:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/o:freebsd:freebsd:6.3:-:*:*:*:*:*:*
  • OR cpe:/o:freebsd:freebsd:7.0:-:*:*:*:*:*:*
  • OR cpe:/o:freebsd:freebsd:6.4:-:*:*:*:*:*:*
  • OR cpe:/o:freebsd:freebsd:7.1:-:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    freebsd freebsd 6.3
    freebsd freebsd 6.4
    freebsd freebsd 7.0
    freebsd freebsd 7.1
    freebsd freebsd 6.3 -
    freebsd freebsd 7.0 -
    freebsd freebsd 6.4 -
    freebsd freebsd 7.1 -