February 2018
Intermediate to advanced
396 pages
9h 38m
English
Content preview from Advanced Infrastructure Penetration Testing
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Case study CVE-2016-2443 Qualcomm MSM debug fs kernel arbitrary write
This exploit is using a Linux branch for Qualcomm SoC on android named MSM. It is high and critical. It targets the debug filesystem also known as debugfs, which is a RAM-based file system generally used for debugging aims by making information available for user space. That is why it is a good entry to inject some information to the Linux kernel. This exploit gives you the ability to pass data to kernel causing a kernel panic via the echo command: echo "41414141 42424242" > /sys/kernel/debug/mddi/reg.
Thus, it will lead to an information leak.
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