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Merge pull request #4 from ValdikSS/bufferoverflows

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Fix buffer overflows in argument parser
This commit is contained in:
T.v.Dein
2017-04-12 20:49:27 +02:00
committed by GitHub
parent 0fd7aea843 9af1b201f6
commit 3573e2f5c6
1 changed files with 11 additions and 5 deletions
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16
udpxd.c
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@@ -176,21 +176,27 @@ int main ( int argc, char* argv[] ) {
}
break;
case 'b':
srcip = malloc(INET6_ADDRSTRLEN+1);
if(strlen(optarg) > INET6_ADDRSTRLEN) {
fprintf(stderr, "Bind ip address is too long!\n");
err = 1;
}
srcip = malloc(INET6_ADDRSTRLEN+1);
strncpy(srcip, optarg, strlen(optarg));
else {
strncpy(srcip, optarg, INET6_ADDRSTRLEN);
srcip[INET6_ADDRSTRLEN-1] = '\0';
}
break;
case 'p':
strncpy(pidfile, optarg, strlen(optarg));
strncpy(pidfile, optarg, MAX_BUFFER_SIZE);
pidfile[MAX_BUFFER_SIZE-1] = '\0';
break;
case 'u':
strncpy(user, optarg, strlen(optarg));
strncpy(user, optarg, 128);
user[128-1] = '\0';
break;
case 'c':
strncpy(chroot, optarg, strlen(optarg));
strncpy(chroot, optarg, MAX_BUFFER_SIZE);
chroot[MAX_BUFFER_SIZE-1] = '\0';
break;
default:
usage();