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Xen PAL Emulation "copy_to_user()" Security Bypass
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Secunia Advisory:
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SA28146
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Release Date:
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2007-12-20
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Popularity:
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5,272 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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Local system
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Solution Status:
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Vendor Workaround
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| Software: | Xen 3.x
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| CVE reference: | CVE-2007-6416
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Description:
A vulnerability has been reported in Xen, which can be exploited by malicious, local users to bypass certain security restrictions.
The vulnerability is caused due to an error within the "copy_to_user()" function in the PAL emulator. This can be exploited by a HVM guest to gain access to arbitrary physical memory regions.
The vulnerability is reported in version 3.1.2 running on IA64 platforms. Other versions may also be affected.
Solution:
Fixed in the development version.
Provided and/or discovered by:
Reported by the vendor.
Original Advisory:
http://xenbits.xensource.com/ext/ia64/xen-unstable.hg?rev/e6069a715fd7
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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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