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Check CIDR ban IP address for validity.

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Otherwise, we compare to uninitialized stack data. This is wrong but seems
harmless.

Closes #103
This commit is contained in:
Jilles Tjoelker 2015-09-13 22:56:14 +02:00
parent 00fda7b7bd
commit 83e5941c87
1 changed files with 8 additions and 4 deletions
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12
src/match.c
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@ -397,8 +397,10 @@ int match_ips(const char *s1, const char *s2)
else
return 0;
rb_inet_pton(aftype, address, ipptr);
rb_inet_pton(aftype, mask, maskptr);
if (rb_inet_pton(aftype, address, ipptr) <= 0)
return 0;
if (rb_inet_pton(aftype, mask, maskptr) <= 0)
return 0;
if (comp_with_mask(ipptr, maskptr, cidrlen))
return 1;
else
@ -471,8 +473,10 @@ int match_cidr(const char *s1, const char *s2)
else
return 0;
rb_inet_pton(aftype, ip, ipptr);
rb_inet_pton(aftype, ipmask, maskptr);
if (rb_inet_pton(aftype, ip, ipptr) <= 0)
return 0;
if (rb_inet_pton(aftype, ipmask, maskptr) <= 0)
return 0;
if (comp_with_mask(ipptr, maskptr, cidrlen) && match(mask, address))
return 1;
else