diff options
Diffstat (limited to 'asn1')
| -rw-r--r-- | asn1/spnego/packet-spnego-template.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/asn1/spnego/packet-spnego-template.c b/asn1/spnego/packet-spnego-template.c index 59f7851668..cf2dfd52c5 100644 --- a/asn1/spnego/packet-spnego-template.c +++ b/asn1/spnego/packet-spnego-template.c @@ -796,13 +796,19 @@ dissect_spnego_krb5_getmic_base(tvbuff_t *tvb, int offset, packet_info *pinfo _U * extra 8 bytes of "Random confounder" after the checksum. * It certainly confounds code expecting all Kerberos 5 * GSS_Wrap() tokens to look the same.... + * + * The exception is DNS/TSIG where there is no such confounder + * so we need to test here if there are more bytes in our tvb or not. + * -- ronnie */ - if (sgn_alg == KRB_SGN_ALG_HMAC) { - proto_tree_add_item(tree, hf_spnego_krb5_confounder, tvb, offset, 8, + if (tvb_length_remaining(tvb, offset)) { + if (sgn_alg == KRB_SGN_ALG_HMAC) { + proto_tree_add_item(tree, hf_spnego_krb5_confounder, tvb, offset, 8, TRUE); - offset += 8; - } + offset += 8; + } + } /* * Return the offset past the checksum, so that we know where |