Hesham/wireguard-android
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tools: try not to overflow

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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2018-01-09 15:15:04 +01:00
parent 426fa7d50b
commit 14638b10ae
1 changed files with 4 additions and 0 deletions
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4
app/tools/wg-quick.c
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@ -286,6 +286,8 @@ static void up_if(unsigned int *netid, const char *iface)
static void set_dnses(unsigned int netid, const char *dnses) static void set_dnses(unsigned int netid, const char *dnses)
{ {
size_t len = strlen(dnses); size_t len = strlen(dnses);
if (len > (1<<16))
return;
_cleanup_free_ char *mutable = xstrdup(dnses); _cleanup_free_ char *mutable = xstrdup(dnses);
_cleanup_free_ char *arglist = xmalloc(len * 4 + 1); _cleanup_free_ char *arglist = xmalloc(len * 4 + 1);
_cleanup_free_ char *arg = xmalloc(len + 4); _cleanup_free_ char *arg = xmalloc(len + 4);
@ -586,6 +588,8 @@ static void parse_options(char **iface, char **config, unsigned int *mtu, char *
while (getline(&line, &n, file) >= 0) { while (getline(&line, &n, file) >= 0) {
size_t len = strlen(line), j = 0; size_t len = strlen(line), j = 0;
if (len > (1<<16))
return;
_cleanup_free_ char *clean = xmalloc(len + 1); _cleanup_free_ char *clean = xmalloc(len + 1);
for (size_t i = 0; i < len; ++i) { for (size_t i = 0; i < len; ++i) {