The Curl_input_negotiate function in http_negotiate.c in libcurl 7.10.6 through 7.21.6, as used in curl and other products, always performs credential delegation during GSSAPI authentication, which allows remote servers to impersonate clients via GSSAPI requests.
openSUSE 11.4 SUSE Linux Enterprise Desktop 11 SP1 SUSE Linux Enterprise Desktop 11 SP4 SUSE Linux Enterprise Server 11 SP1 SUSE Linux Enterprise Server 11 SP1 for Teradata SUSE Linux Enterprise Server 11 SP1 for VMware SUSE Linux Enterprise Server 11 SP1-TERADATA SUSE Linux Enterprise Server 11 SP2 SUSE Linux Enterprise Server 11 SP3 SUSE Linux Enterprise Server 11 SP4 SUSE Linux Enterprise Server 11-SECURITY SUSE Linux Enterprise Server for SAP Applications 11 SP1-TERADATA SUSE Linux Enterprise Server for SAP Applications 11 SP4 SUSE Linux Enterprise Software Development Kit 11 SP1 SUSE Linux Enterprise Software Development Kit 11 SP4