diff options
Diffstat (limited to 'crypto/x509v3/v3_addr.c')
| -rw-r--r-- | crypto/x509v3/v3_addr.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/crypto/x509v3/v3_addr.c b/crypto/x509v3/v3_addr.c index ccce34ef2e48..f9c368bea405 100644 --- a/crypto/x509v3/v3_addr.c +++ b/crypto/x509v3/v3_addr.c @@ -392,12 +392,14 @@ static int range_should_be_prefix(const unsigned char *min, /* * Construct a prefix. */ -static int make_addressPrefix(IPAddressOrRange **result, - unsigned char *addr, const int prefixlen) +static int make_addressPrefix(IPAddressOrRange **result, unsigned char *addr, + const int prefixlen, const int afilen) { int bytelen = (prefixlen + 7) / 8, bitlen = prefixlen % 8; IPAddressOrRange *aor = IPAddressOrRange_new(); + if (prefixlen < 0 || prefixlen > (afilen * 8)) + return 0; if (aor == NULL) return 0; aor->type = IPAddressOrRange_addressPrefix; @@ -437,7 +439,7 @@ static int make_addressRange(IPAddressOrRange **result, return 0; if ((prefixlen = range_should_be_prefix(min, max, length)) >= 0) - return make_addressPrefix(result, min, prefixlen); + return make_addressPrefix(result, min, prefixlen, length); if ((aor = IPAddressOrRange_new()) == NULL) return 0; @@ -599,7 +601,9 @@ int X509v3_addr_add_prefix(IPAddrBlocks *addr, { IPAddressOrRanges *aors = make_prefix_or_range(addr, afi, safi); IPAddressOrRange *aor; - if (aors == NULL || !make_addressPrefix(&aor, a, prefixlen)) + + if (aors == NULL + || !make_addressPrefix(&aor, a, prefixlen, length_from_afi(afi))) return 0; if (sk_IPAddressOrRange_push(aors, aor)) return 1; @@ -996,7 +1000,10 @@ static void *v2i_IPAddrBlocks(const struct v3_ext_method *method, switch (delim) { case '/': prefixlen = (int)strtoul(s + i2, &t, 10); - if (t == s + i2 || *t != '\0') { + if (t == s + i2 + || *t != '\0' + || prefixlen > (length * 8) + || prefixlen < 0) { X509V3err(X509V3_F_V2I_IPADDRBLOCKS, X509V3_R_EXTENSION_VALUE_ERROR); X509V3_conf_err(val); |