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RedHat 5.1 dumpreg Vulnerability
The dumpreg utility included with redhat 5.1 can cause kernel crashes. The reasons is that it opens /dev/mem with O_RDWR access and blindly prints its output to fd 1. This can be trivially exploited with a simple program and run by any local user to corrupt kernel memory. Results may vary, but a crash is pretty much inevitable given enough time. A quick fix would be to remove setuid privs from the dumpreg program, as this is not needed for normal use. |
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