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Test ID:1.3.6.1.4.1.25623.1.0.61921
Category:FreeBSD Local Security Checks
Title:FreeBSD Security Advisory (FreeBSD-SA-08:11.arc4random.asc)
Summary:FreeBSD Security Advisory (FreeBSD-SA-08:11.arc4random.asc)
Description:The remote host is missing an update to the system
as announced in the referenced advisory FreeBSD-SA-08:11.arc4random.asc

arc4random(9) is a generic-purpose random number generator based on the
key stream generator of the RC4 cipher. It is expected to be
cryptographically strong, and used throughout the FreeBSD kernel for a
variety of purposes, some of which rely on its cryptographic strength.
arc4random(9) is periodically reseeded with entropy from the FreeBSD
kernel's Yarrow random number generator, which gathers entropy from a
variety of sources including hardware interrupts. During the boot
process, additional entropy is provided to the Yarrow random number
generator from userland, helping to ensure that adequate entropy is
present for cryptographic purposes.

When the arc4random(9) random number generator is initialized, there may
be inadequate entropy to meet the needs of kernel systems which rely on
arc4random(9)
and it may take up to 5 minutes before arc4random(9) is
reseeded with secure entropy from the Yarrow random number generator.

Solution:
Upgrade your system to the appropriate stable release
or security branch dated after the correction date

http://www.securityspace.com/smysecure/catid.html?in=FreeBSD-SA-08:11.arc4random.asc
Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2008-5162
FreeBSD Security Advisory: FreeBSD-SA-08:11
http://security.freebsd.org/advisories/FreeBSD-SA-08:11.arc4random.asc
BugTraq ID: 32447
http://www.securityfocus.com/bid/32447
http://osvdb.org/50137
http://securitytracker.com/id?1021276
http://secunia.com/advisories/32871
CopyrightCopyright (c) 2008 E-Soft Inc. http://www.securityspace.com

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