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NetBSD False Intel Hardware RNG Detection Security Issue
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Secunia Advisory:
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SA19585
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Release Date:
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2006-04-13
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Last Update:
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2006-04-26
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Popularity:
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7,614 views
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Critical:
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Less critical
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Impact:
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Security Bypass
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | NetBSD 1.x
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| CVE reference: | CVE-2006-1833
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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.
Changelog:
2006-04-26: Added CVE reference.
Original Advisory:
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-009.txt.asc
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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