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Drop setuid privilege correctly. (#401)

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Nick Briggs 2021-10-29 09:52:51 -07:00 committed by GitHub
parent c39b751f42
commit 19688bc314
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3 changed files with 7 additions and 7 deletions
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6
src/ether.c
View File

@ -742,7 +742,7 @@ static int check_filter(u_char *buffer)
static void init_uid() {
int rid;
rid = getuid();
seteuid(rid);
setuid(rid);
}
#endif /* MAIKO_ENABLE_ETHERNET */
@ -830,7 +830,7 @@ void init_ether() {
/* JDS 991228 remove perror("Can't open network; XNS unavailable.\n"); */
ether_fd = -1;
}
seteuid(getuid());
setuid(getuid());
}
#elif defined(USE_NIT)
#ifndef OS4
@ -952,7 +952,7 @@ void init_ether() {
perror("Can't open network; XNS unavailable.\n");
ether_fd = -1;
}
seteuid(getuid());
setuid(getuid());
}
#endif /* OS4 */

2
src/ldeether.c
View File

@ -214,7 +214,7 @@ int main(int argc, char *argv[]) {
ether_fd = -1;
/* exit(); */
}
seteuid(getuid());
setuid(getuid());
}
/* OK, right here do other stuff like scan args */

6
src/main.c
View File

@ -486,9 +486,9 @@ int main(int argc, char *argv[])
probemouse(); /* See if the mouse is connected. */
#else
if (getuid() != geteuid()) {
fprintf(stderr, "Effective user is not real user. Setting euid to uid.\n");
if (seteuid(getuid()) == -1) {
fprintf(stderr, "Unable to reset effective user id to real user id\n");
fprintf(stderr, "Effective user is not real user. Resetting uid\n");
if (setuid(getuid()) == -1) {
fprintf(stderr, "Unable to reset user id to real user id\n");
exit(1);
}
}