diff options
Diffstat (limited to 'nis/yp_xdr.c')
| -rw-r--r-- | nis/yp_xdr.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/nis/yp_xdr.c b/nis/yp_xdr.c index 418850643d..34566d19a8 100644 --- a/nis/yp_xdr.c +++ b/nis/yp_xdr.c @@ -32,6 +32,14 @@ #include <rpcsvc/yp.h> #include <rpcsvc/ypclnt.h> +/* The NIS v2 protocol suggests 1024 bytes as a maximum length of all fields. + Current Linux systems don't use this limit. To remain compatible with + recent Linux systems we choose limits large enough to load large key and + data values, but small enough to not pose a DoS threat. */ + +#define XDRMAXNAME 1024 +#define XDRMAXRECORD (16 * 1024 * 1024) + bool_t xdr_ypstat (XDR *xdrs, ypstat *objp) { @@ -49,21 +57,21 @@ libnsl_hidden_def (xdr_ypxfrstat) bool_t xdr_domainname (XDR *xdrs, domainname *objp) { - return xdr_string (xdrs, objp, YPMAXDOMAIN); + return xdr_string (xdrs, objp, XDRMAXNAME); } libnsl_hidden_def (xdr_domainname) bool_t xdr_mapname (XDR *xdrs, mapname *objp) { - return xdr_string (xdrs, objp, YPMAXMAP); + return xdr_string (xdrs, objp, XDRMAXNAME); } libnsl_hidden_def (xdr_mapname) bool_t xdr_peername (XDR *xdrs, peername *objp) { - return xdr_string (xdrs, objp, YPMAXPEER); + return xdr_string (xdrs, objp, XDRMAXNAME); } libnsl_hidden_def (xdr_peername) @@ -71,7 +79,7 @@ bool_t xdr_keydat (XDR *xdrs, keydat *objp) { return xdr_bytes (xdrs, (char **) &objp->keydat_val, - (u_int *) &objp->keydat_len, YPMAXRECORD); + (u_int *) &objp->keydat_len, XDRMAXRECORD); } libnsl_hidden_def (xdr_keydat) @@ -79,7 +87,7 @@ bool_t xdr_valdat (XDR *xdrs, valdat *objp) { return xdr_bytes (xdrs, (char **) &objp->valdat_val, - (u_int *) &objp->valdat_len, YPMAXRECORD); + (u_int *) &objp->valdat_len, XDRMAXRECORD); } libnsl_hidden_def (xdr_valdat) |