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In ngx_ptocidr(), check that the supplied prefix length is within

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the allowed range.
This commit is contained in:
Ruslan Ermilov 2012-04-03 08:22:00 +00:00
parent 47a04aaa27
commit bffbbeb73f
1 changed files with 7 additions and 0 deletions
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7
src/core/ngx_inet.c
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@ -407,6 +407,10 @@ ngx_ptocidr(ngx_str_t *text, ngx_cidr_t *cidr)
#if (NGX_HAVE_INET6)
case AF_INET6:
if (shift > 128) {
return NGX_ERROR;
}
addr = cidr->u.in6.addr.s6_addr;
mask = cidr->u.in6.mask.s6_addr;
rc = NGX_OK;
@ -428,6 +432,9 @@ ngx_ptocidr(ngx_str_t *text, ngx_cidr_t *cidr)
#endif
default: /* AF_INET */
if (shift > 32) {
return NGX_ERROR;
}
if (shift) {
cidr->u.in.mask = htonl((ngx_uint_t) (0 - (1 << (32 - shift))));