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Linux Kernel IPv4 "sockaddr_in.sin_zero" Information Disclosure
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Secunia Advisory:
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SA19357
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Release Date:
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2006-03-23
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Last Update:
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2006-05-31
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Popularity:
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15,081 views
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Critical:
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Not 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: | Linux Kernel 2.4.x
Linux Kernel 2.6.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
Pavel Kankovsky has reported a weakness in the Linux kernel, which can be exploited by malicious, local users to disclose potentially sensitive information.
The weakness is caused due to the "sockaddr_in.sin_zero" array not being zeroed before being returned to user space programs calling certain socket functions to retrieve information about the specified socket. This can be exploited to disclose six uninitialised bytes of the kernel stack via calls to the "getsockopt()" function with the "SO_ORIGINAL_DST" option, or via calls to the "getsockname()", "getpeername()", and "accept()" functions.
The weakness has been reported in the 2.4 and 2.6 kernel branches.
NOTE: The weakness in the "getsockname()", "getpeername()", and "accept()" functions affect only the 2.4 kernel.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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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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