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Xen PAL Emulation "copy_to_user()" Security Bypass
Secunia Advisory: SA28146
Release Date: 2007-12-20
Popularity: 6,120 views

Critical:
Less critical
Impact: Security Bypass
Where: Local system
Solution Status: Vendor Workaround

Software:Xen 3.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

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.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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