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Fixed an integer overflow in the dns caching code that caused nmap to loop infinitely once it had expunging the cache of older entries.

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ejlbell
2008-01-14 15:16:50 +00:00
parent 77445b81b1
commit 9bc09ef2cc
1 changed files with 2 additions and 1 deletions
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nmap_dns.cc
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@@ -1041,7 +1041,8 @@ static void addto_etchosts(u32 ip, const char *hname) {
for(i = 0; i < HASH_TABLE_SIZE; i++) { for(i = 0; i < HASH_TABLE_SIZE; i++) {
while((it = find_if(etchosts[i].begin(), etchosts[i].end(), remove_and_age)) != etchosts[i].end()) { while((it = find_if(etchosts[i].begin(), etchosts[i].end(), remove_and_age)) != etchosts[i].end()) {
etchosts[i].erase(it); etchosts[i].erase(it);
total_size--; if((total_size--) < HASH_TABLE_SIZE/2)
break;
} }
} }
} }