December 2013
Intermediate to advanced
350 pages
8h 1m
English
Content preview from Android Security CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Inspecting file permissions
One of the most commonly exploited ways to escalate privileges from within a local context is to abuse discrepancies and inadequacies in the way filesystem permissions—or access rights—are set up in an operating system. There are countless instances of vulnerabilities and privilege escalation attack methods that abuse file permissions, be it the setuid flag on a globally executable vulnerable binary, such as su or symlink, or the race condition attack on a file that is globally readable and written to by a superuser-owned application; for example, pulse audio CVE-2009-1894.
Being able to clearly identify any potential entry points presented by the filesystem is a good place to start defining the Android native attack ...
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