This document describes buffer overrun vulnerabilities on Sun Microsystems SPARC machines. We will begin by examining the SPARC architecture, looking at the registers and the stack. We will then go on to see exact how buffer overrun vulnerabilities occur and how control over the processes execution is gained under SPARC and then detail how, from here, the vulnerability can be exploited to gain control over the computer by looking at exploit code that spawns a shell under Solaris.
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Source: https://packetstormsecurity.com/files/25673/sparc.zip.html