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OpenBSD Kernfs Kernel Memory Disclosure Vulnerability
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Secunia Advisory:
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SA18712
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Release Date:
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2006-02-03
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Last Update:
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2006-08-04
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Critical:
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Less critical
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Impact:
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Exposure of sensitive information
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Where:
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Local system
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Solution Status:
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Vendor Patch
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| OS: | OpenBSD 3.x
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| | CVE reference: | CVE-2006-0145 (Secunia mirror)
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Description:
SecurityLab Technologies has reported a vulnerability in OpenBSD, which can be exploited by malicious, local users to disclose potentially sensitive information.
The vulnerability is caused due to an input validation error in the "kernfs_xread()" function within the handling of user-supplied offset values. This can be exploited by a non-privileged process to read arbitrary kernel memory via the kernfs file system.
The vulnerability has been reported in OpenBSD version 3.8.
NOTE: The vendor reports that kernfs is not linked into the GENERIC kernel by default.
Solution:
The kernfs code has reportedly already been removed from the current kernel code.
Provided and/or discovered by:
SecurityLab Technologies.
Changelog:
2006-08-04: Added CVE reference.
Original Advisory:
http://www.securitylab.net/research/2006/02/advisory_netbsd_openbsd_kernfs.html
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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