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Secunia Security Advisory 19585

Secunia Security Advisory 19585
Posted Apr 14, 2006
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A security issue has been reported in NetBSD, which can weaken certain security features.

tags | advisory
systems | netbsd
SHA-256 | 8d1fc904126dcb25d4249126aa9f7ec22c10e54b35da14058bd39af52843d816

Secunia Security Advisory 19585

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TITLE:
NetBSD False Intel Hardware RNG Detection Security Issue

SECUNIA ADVISORY ID:
SA19585

VERIFY ADVISORY:
http://secunia.com/advisories/19585/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
>From remote

OPERATING SYSTEM:
NetBSD 1.x
http://secunia.com/product/255/

DESCRIPTION:
A security issue has been reported in NetBSD, which can weaken
certain security features.

The problem is that the driver for Intel's RNG (Random Number
Generator) incorrectly detects the device as present on some
hardware. This causes the driver to feed a constant stream of bytes
with value 255 into the entropy pool for the kernel RNG resulting in
poor-quality or highly predictable output.

This may e.g. cause the SSH daemon to use predictable keys on certain
systems.

SOLUTION:
The security issue has been fixed in NetBSD-1-6 branch (February 26,
2006).

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Matthias Scheler.

ORIGINAL ADVISORY:
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-009.txt.asc

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

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