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Fixed a memory bug (access of freed memory) when loading exclude

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targets with --exclude. This was reported to occasionally cause a
crash. Will Cladek reported the bug and contributed an initial
patch.
This commit is contained in:
david
2009-06-14 23:00:33 +00:00
parent 9dcee544b4
commit 0b508999c1
2 changed files with 9 additions and 16 deletions
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5
CHANGELOG
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@@ -1,5 +1,10 @@
# Nmap Changelog ($Id$); -*-text-*- # Nmap Changelog ($Id$); -*-text-*-
o Fixed a memory bug (access of freed memory) when loading exclude
targets with --exclude. This was reported to occasionally cause a
crash. Will Cladek reported the bug and contributed an initial
patch. [David]
Nmap 4.85BETA10 [2009-06-12] Nmap 4.85BETA10 [2009-06-12]
o The host discovery (ping probe) defaults have been enhanced to o The host discovery (ping probe) defaults have been enhanced to

18
targets.cc
View File

@@ -334,22 +334,10 @@ TargetGroup* load_exclude(FILE *fExclude, char *szExclude) {
error("Loaded exclude target of: %s", pc); error("Loaded exclude target of: %s", pc);
++i; ++i;
} }
pc=strtok(NULL, ",");
/* This is a totally cheezy hack, but since I can't use strtok_r...
* If you can think of a better way to do this, feel free to change.
* As for now, we will reset strtok each time we leave parse_expr */
{
int hack_i;
char *hack_c = strdup(szExclude);
pc=strtok(hack_c, ",");
for (hack_i = 0; hack_i < i; hack_i++)
pc=strtok(NULL, ",");
free(hack_c);
}
} }
free(p_acBuf);
p_acBuf = NULL;
} }
return excludelist; return excludelist;
} }