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Linux Local Root Via SUID /prod/pid/mem Write
Posted Jan 23, 2012
Authored by zx2c4

This is the Mempodipper local root exploit for Linux. /proc/pid/mem is an interface for reading and writing, directly, process memory by seeking around with the same addresses as the process's virtual memory space. In 2.6.39, the protections against unauthorized access to /proc/pid/mem were deemed sufficient, and so the prior #ifdef that prevented write support for writing to arbitrary process memory was removed. Anyone with the correct permissions could write to process memory. It turns out, of course, that the permissions checking was done poorly. This means that all Linux kernels greater than and equal to 2.6.39 are vulnerable.

tags | exploit, arbitrary, kernel, local, root
systems | linux
advisories | CVE-2012-0056
SHA-256 | 3a525daa17c897f966b003f33e20bb846db1a8e769624736feaf876a139f8576

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