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NXT: fix fromwire bitmap checks

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This commit is contained in:
Mark Andrews 2020-08-13 12:08:50 +10:00
parent 7dc8e720ff
commit 73dd849655
1 changed files with 2 additions and 2 deletions
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4
lib/dns/rdata/generic/nxt_30.c
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@ -148,8 +148,8 @@ fromwire_nxt(ARGS_FROMWIRE) {
RETERR(dns_name_fromwire(&name, source, dctx, options, target)); RETERR(dns_name_fromwire(&name, source, dctx, options, target));
isc_buffer_activeregion(source, &sr); isc_buffer_activeregion(source, &sr);
if (sr.length > 0 && (sr.base[0] & 0x80) == 0 && if (sr.length > 0 && ((sr.base[0] & 0x80) != 0 || sr.length > 16 ||
((sr.length > 16) || sr.base[sr.length - 1] == 0)) sr.base[sr.length - 1] == 0))
{ {
return (DNS_R_BADBITMAP); return (DNS_R_BADBITMAP);
} }