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ndb/dns: check bad name length in convM2DNS.c:^gname()

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cinap_lenrek 2013-11-28 23:47:49 +01:00
parent b77eda8fc7
commit ad3ba8838d
1 changed files with 7 additions and 3 deletions
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4
sys/src/cmd/ndb/convM2DNS.c
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@ -237,6 +237,10 @@ gname(char *to, RR *rp, Scan *sp)
case 0: /* normal label */
if(p < sp->ep)
n = *p++ & 077; /* pick up length */
if(sp->ep - p <= n){
sp->err = "bad name length";
goto err;
}
if(len + n < Domlen - 1){
if(n > toend - to){
errtoolong(rp, sp, toend - to, n,