diff options
-rw-r--r-- | src/lib/gssapi/spnego/spnego_mech.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/lib/gssapi/spnego/spnego_mech.c b/src/lib/gssapi/spnego/spnego_mech.c index bdd7586..5923c88 100644 --- a/src/lib/gssapi/spnego/spnego_mech.c +++ b/src/lib/gssapi/spnego/spnego_mech.c @@ -3437,8 +3437,9 @@ get_negTokenInit(OM_uint32 *minor_status, if (!k5_der_get_value(&seq, SEQUENCE, &seq)) return GSS_S_DEFECTIVE_TOKEN; - /* Get the contents of the mechTypes field. */ - if (!k5_der_get_value(&seq, CONTEXT, &field)) + /* Get the contents of the mechTypes field. Reject an empty field here + * since we musn't allocate a zero-length buffer in the next step. */ + if (!k5_der_get_value(&seq, CONTEXT, &field) || field.len == 0) return GSS_S_DEFECTIVE_TOKEN; /* Store a copy of the contents for MIC computation. */ |