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- Fix RPZ's get_tld_label maxdnamelen check

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Ralph Dolmans 2020-01-29 10:57:29 +01:00
parent 9df07b4036
commit ef120738c0
1 changed files with 5 additions and 1 deletions
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6
services/rpz.c
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@ -118,13 +118,17 @@ get_tld_label(uint8_t* dname, size_t maxdnamelen)
uint8_t* prevlab = dname;
size_t dnamelen = 0;
/* one byte needed for label length */
if(dnamelen+1 > maxdnamelen)
return NULL;
/* only root label */
if(*dname == 0)
return NULL;
while(*dname) {
dnamelen += ((size_t)*dname)+1;
if(dnamelen > maxdnamelen)
if(dnamelen+1 > maxdnamelen)
return NULL;
dname = dname+((size_t)*dname)+1;
if(*dname != 0)