For the following Computer Science question: Does the following Set-UID program have a race condition vulnerability? if(!access("/etc/passwd", W_OK)) { /* the real user has the write permission*/ f = open("/tmp/X", O_WRITE); write_to_file(f); } else { /* the real user does not have the write permission */ fprintf(stderr, "Permission denied\n"); } Please explain your reasoning!
For the following Computer Science question: Does the following Set-UID program have a race condition vulnerability? if(!access("/etc/passwd", W_OK)) { /* the real user has the write permission*/ f = open("/tmp/X", O_WRITE); write_to_file(f); } else { /* the real user does not have the write permission */ fprintf(stderr, "Permission denied\n"); } Please explain your reasoning!
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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For the following Computer Science question: Does the following Set-UID
if(!access("/etc/passwd", W_OK))
{
/* the real user has the write permission*/
f = open("/tmp/X", O_WRITE);
write_to_file(f);
}
else
{
/* the real user does not have the write permission */
fprintf(stderr, "Permission denied\n");
}
Please explain your reasoning!
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