Home/CVE/The arc4random function in the kernel in FreeBSD 6.3 through 7.1 does not have a proper entropy source for a short time
CVE

CVE-2008-5162

The arc4random function in the kernel in FreeBSD 6.3 through 7.1 does not have a proper entropy source for a short time

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.

HIGH · CVSS 7 EPSS 0.00063
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-330Use of Insufficiently Random Values
▤

Affected Products & Versions

2
freebsd>= 6.4 and < 7.0
freebsdall versions
▣

Scoring & Timeline

7
HIGH · CVSS v3.1 · secteam@freebsd.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Nov 2008 · 11:30 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://osvdb.org/50137Broken Link
http://secunia.com/advisories/32871Broken Link
http://security.freebsd.org/advisories/FreeBSD-SA-08:11.arc4random.ascVendor Advisory
http://securitytracker.com/id?1021276Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/32447Broken LinkThird Party AdvisoryVDB Entry
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