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Linux Kernel Directory Truncation Vulnerability
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Secunia Advisory:
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SA28485
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Release Date:
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2008-01-15
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Critical:
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Less critical
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Impact:
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Security Bypass
Manipulation of data
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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 2.6.x
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| | CVE reference: | CVE-2008-0001 (Secunia mirror)
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Description:
A vulnerability has been reported in the Linux Kernel, which can be exploited by malicious, local users to bypass certain security restrictions and corrupt a file system.
The vulnerability is caused due to an error when checking the open flags and access modes when opening a directory. This can be exploited to truncate directories by calling the "open()" system call with certain flags.
Successful exploitation requires write privileges for the directory to be truncated.
The vulnerability is reported in version 2.6.15 up to versions prior to 2.6.22.16 or 2.6.23.14. Other versions may also be affected.
Solution:
Update to version 2.6.22.16 or 2.6.23.14.
Provided and/or discovered by:
The vendor credits Bill Roman, Datalight.
Original Advisory:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.23.14
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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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