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krb5-mini
bnc#912002.diff
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File bnc#912002.diff of Package krb5-mini
-#include <k5-platform.h> +#include <k5-int.h> #include <gssrpc/rpc.h> #include <gssapi/gssapi_krb5.h> /* for gss_nt_krb5_name */ #include <syslog.h> @@ -296,14 +296,8 @@ check_rpcsec_auth(struct svc_req *rqstp) c1 = krb5_princ_component(kctx, princ, 0); c2 = krb5_princ_component(kctx, princ, 1); realm = krb5_princ_realm(kctx, princ); - if (strncmp(handle->params.realm, realm->data, realm->length) == 0 - && strncmp("kadmin", c1->data, c1->length) == 0) { - - if (strncmp("history", c2->data, c2->length) == 0) - goto fail_princ; - else - success = 1; - } + success = data_eq_string(*realm, handle->params.realm) && + data_eq_string(*c1, "kadmin") && !data_eq_string(*c2, "history"); fail_princ: if (!success) { diff --git a/src/lib/gssapi/krb5/context_time.c b/src/lib/gssapi/krb5/context_time.c index b3d1db0..a18cfb0 100644 --- a/src/lib/gssapi/krb5/context_time.c +++ b/src/lib/gssapi/krb5/context_time.c @@ -40,7 +40,7 @@ krb5_gss_context_time(minor_status, context_handle, time_rec) ctx = (krb5_gss_ctx_id_rec *) context_handle; - if (! ctx->established) { + if (ctx->terminated || !ctx->established) { *minor_status = KG_CTX_INCOMPLETE; return(GSS_S_NO_CONTEXT); } diff --git a/src/lib/gssapi/krb5/export_sec_context.c b/src/lib/gssapi/krb5/export_sec_context.c index 18a3a34..1b3de68 100644 --- a/src/lib/gssapi/krb5/export_sec_context.c +++ b/src/lib/gssapi/krb5/export_sec_context.c @@ -45,6 +45,11 @@ krb5_gss_export_sec_context(minor_status, context_handle, interprocess_token) *minor_status = 0; ctx = (krb5_gss_ctx_id_t) *context_handle; + if (ctx->terminated) { + *minor_status = KG_CTX_INCOMPLETE; + return (GSS_S_NO_CONTEXT); + } + context = ctx->k5_context; kret = krb5_gss_ser_init(context); if (kret) diff --git a/src/lib/gssapi/krb5/gssapiP_krb5.h b/src/lib/gssapi/krb5/gssapiP_krb5.h index 7e807cc..a0e8625 100644 --- a/src/lib/gssapi/krb5/gssapiP_krb5.h +++ b/src/lib/gssapi/krb5/gssapiP_krb5.h @@ -206,6 +206,7 @@ typedef struct _krb5_gss_ctx_id_rec { unsigned int established : 1; unsigned int have_acceptor_subkey : 1; unsigned int seed_init : 1; /* XXX tested but never actually set */ + unsigned int terminated : 1; OM_uint32 gss_flags; unsigned char seed[16]; krb5_gss_name_t here; diff --git a/src/lib/gssapi/krb5/gssapi_krb5.c b/src/lib/gssapi/krb5/gssapi_krb5.c index 6456b23..77b7fff 100644 --- a/src/lib/gssapi/krb5/gssapi_krb5.c +++ b/src/lib/gssapi/krb5/gssapi_krb5.c @@ -369,7 +369,7 @@ krb5_gss_inquire_sec_context_by_oid (OM_uint32 *minor_status, ctx = (krb5_gss_ctx_id_rec *) context_handle; - if (!ctx->established) + if (ctx->terminated || !ctx->established) return GSS_S_NO_CONTEXT; for (i = 0; i < sizeof(krb5_gss_inquire_sec_context_by_oid_ops)/ diff --git a/src/lib/gssapi/krb5/inq_context.c b/src/lib/gssapi/krb5/inq_context.c index eacb0fd..096df2a 100644 --- a/src/lib/gssapi/krb5/inq_context.c +++ b/src/lib/gssapi/krb5/inq_context.c @@ -105,7 +105,7 @@ krb5_gss_inquire_context(minor_status, context_handle, initiator_name, ctx = (krb5_gss_ctx_id_rec *) context_handle; - if (! ctx->established) { + if (ctx->terminated || !ctx->established) { *minor_status = KG_CTX_INCOMPLETE; return(GSS_S_NO_CONTEXT); } diff --git a/src/lib/gssapi/krb5/k5seal.c b/src/lib/gssapi/krb5/k5seal.c index 7665cba..f1c74dd 100644 --- a/src/lib/gssapi/krb5/k5seal.c +++ b/src/lib/gssapi/krb5/k5seal.c @@ -342,7 +342,7 @@ kg_seal(minor_status, context_handle, conf_req_flag, qop_req, ctx = (krb5_gss_ctx_id_rec *) context_handle; - if (! ctx->established) { + if (ctx->terminated || !ctx->established) { *minor_status = KG_CTX_INCOMPLETE; return(GSS_S_NO_CONTEXT); } diff --git a/src/lib/gssapi/krb5/k5sealiov.c b/src/lib/gssapi/krb5/k5sealiov.c index a129670..b53e348 100644 --- a/src/lib/gssapi/krb5/k5sealiov.c +++ b/src/lib/gssapi/krb5/k5sealiov.c @@ -281,7 +281,7 @@ kg_seal_iov(OM_uint32 *minor_status, } ctx = (krb5_gss_ctx_id_rec *)context_handle; - if (!ctx->established) { + if (ctx->terminated || !ctx->established) { *minor_status = KG_CTX_INCOMPLETE; return GSS_S_NO_CONTEXT; } diff --git a/src/lib/gssapi/krb5/k5unseal.c b/src/lib/gssapi/krb5/k5unseal.c index 0573958..673c883 100644 --- a/src/lib/gssapi/krb5/k5unseal.c +++ b/src/lib/gssapi/krb5/k5unseal.c @@ -492,7 +492,7 @@ kg_unseal(minor_status, context_handle, input_token_buffer, ctx = (krb5_gss_ctx_id_rec *) context_handle; - if (! ctx->established) { + if (ctx->terminated || !ctx->established) { *minor_status = KG_CTX_INCOMPLETE; return(GSS_S_NO_CONTEXT); } diff --git a/src/lib/gssapi/krb5/k5unsealiov.c b/src/lib/gssapi/krb5/k5unsealiov.c index f34d802..8b67042 100644 --- a/src/lib/gssapi/krb5/k5unsealiov.c +++ b/src/lib/gssapi/krb5/k5unsealiov.c @@ -625,7 +625,7 @@ kg_unseal_iov(OM_uint32 *minor_status, OM_uint32 code; ctx = (krb5_gss_ctx_id_rec *)context_handle; - if (!ctx->established) { + if (ctx->terminated || !ctx->established) { *minor_status = KG_CTX_INCOMPLETE; return GSS_S_NO_CONTEXT; } diff --git a/src/lib/gssapi/krb5/prf.c b/src/lib/gssapi/krb5/prf.c index e19291f..e897074 100644 --- a/src/lib/gssapi/krb5/prf.c +++ b/src/lib/gssapi/krb5/prf.c @@ -58,6 +58,10 @@ krb5_gss_pseudo_random(OM_uint32 *minor_status, ns.data = NULL; ctx = (krb5_gss_ctx_id_t)context; + if (ctx->terminated || !ctx->established) { + *minor_status = KG_CTX_INCOMPLETE; + return GSS_S_NO_CONTEXT; + } switch (prf_key) { case GSS_C_PRF_KEY_FULL: diff --git a/src/lib/gssapi/krb5/process_context_token.c b/src/lib/gssapi/krb5/process_context_token.c index ae33180..a672f48 100644 --- a/src/lib/gssapi/krb5/process_context_token.c +++ b/src/lib/gssapi/krb5/process_context_token.c @@ -39,11 +39,18 @@ krb5_gss_process_context_token(minor_status, context_handle, ctx = (krb5_gss_ctx_id_t) context_handle; - if (! ctx->established) { + if (ctx->terminated || !ctx->established) { *minor_status = KG_CTX_INCOMPLETE; return(GSS_S_NO_CONTEXT); } + /* We only support context deletion tokens for now, and RFC 4121 does not + * define a context deletion token. */ + if (ctx->proto) { + *minor_status = 0; + return(GSS_S_DEFECTIVE_TOKEN); + } + /* "unseal" the token */ if (GSS_ERROR(majerr = kg_unseal(minor_status, context_handle, @@ -52,8 +59,8 @@ krb5_gss_process_context_token(minor_status, context_handle, KG_TOK_DEL_CTX))) return(majerr); - /* that's it. delete the context */ - - return(krb5_gss_delete_sec_context(minor_status, &context_handle, - GSS_C_NO_BUFFER)); + /* Mark the context as terminated, but do not delete it (as that would + * leave the caller with a dangling context handle). */ + ctx->terminated = 1; + return(GSS_S_COMPLETE); } diff --git a/src/lib/gssapi/krb5/wrap_size_limit.c b/src/lib/gssapi/krb5/wrap_size_limit.c index 7bc4221..ed5c599 100644 --- a/src/lib/gssapi/krb5/wrap_size_limit.c +++ b/src/lib/gssapi/krb5/wrap_size_limit.c @@ -95,7 +95,7 @@ krb5_gss_wrap_size_limit(minor_status, context_handle, conf_req_flag, } ctx = (krb5_gss_ctx_id_rec *) context_handle; - if (! ctx->established) { + if (ctx->terminated || !ctx->established) { *minor_status = KG_CTX_INCOMPLETE; return(GSS_S_NO_CONTEXT); } diff --git a/src/lib/gssapi/mechglue/mglueP.h b/src/lib/gssapi/mechglue/mglueP.h index e56b9c1..2b5145e 100644 --- a/src/lib/gssapi/mechglue/mglueP.h +++ b/src/lib/gssapi/mechglue/mglueP.h @@ -25,7 +25,6 @@ do { \ */ typedef struct gss_union_ctx_id_struct { struct gss_union_ctx_id_struct *loopback; - struct gss_union_ctx_id_struct *interposer; gss_OID mech_type; gss_ctx_id_t internal_ctx_id; } gss_union_ctx_id_desc, *gss_union_ctx_id_t; diff --git a/src/lib/kadm5/kadm_rpc_xdr.c b/src/lib/kadm5/kadm_rpc_xdr.c index 42ac783..975f94c 100644 --- a/src/lib/kadm5/kadm_rpc_xdr.c +++ b/src/lib/kadm5/kadm_rpc_xdr.c @@ -320,6 +320,7 @@ bool_t xdr_krb5_tl_data(XDR *xdrs, krb5_tl_data **tl_data_head) free(tl); tl = tl2; } + *tl_data_head = NULL; break; case XDR_ENCODE: @@ -1096,6 +1097,7 @@ xdr_krb5_principal(XDR *xdrs, krb5_principal *objp) case XDR_FREE: if(*objp != NULL) krb5_free_principal(context, *objp); + *objp = NULL; break; } return TRUE; diff --git a/src/lib/rpc/auth_gssapi_misc.c b/src/lib/rpc/auth_gssapi_misc.c index 53bdb98..a05ea19 100644 --- a/src/lib/rpc/auth_gssapi_misc.c +++ b/src/lib/rpc/auth_gssapi_misc.c @@ -322,7 +322,6 @@ bool_t auth_gssapi_unwrap_data( if (! (*xdr_func)(&temp_xdrs, xdr_ptr)) { PRINTF(("gssapi_unwrap_data: deserializing arguments failed\n")); gss_release_buffer(minor, &out_buf); - xdr_free(xdr_func, xdr_ptr); XDR_DESTROY(&temp_xdrs); return FALSE; } diff --git a/src/lib/rpc/svc_auth_gss.c b/src/lib/rpc/svc_auth_gss.c index 09a3534..b81c4a3 100644 --- a/src/lib/rpc/svc_auth_gss.c +++ b/src/lib/rpc/svc_auth_gss.c @@ -65,16 +65,6 @@ extern const gss_OID_desc * const gss_mech_spkm3; extern SVCAUTH svc_auth_none; -/* - * from mit-krb5-1.2.1 mechglue/mglueP.h: - * Array of context IDs typed by mechanism OID - */ -typedef struct gss_union_ctx_id_t { - gss_OID mech_type; - gss_ctx_id_t internal_ctx_id; -} gss_union_ctx_id_desc, *gss_union_ctx_id_t; - - static auth_gssapi_log_badauth_func log_badauth = NULL; static caddr_t log_badauth_data = NULL; static auth_gssapi_log_badauth2_func log_badauth2 = NULL; @@ -239,16 +229,8 @@ svcauth_gss_accept_sec_context(struct svc_req *rqst, gd->ctx = GSS_C_NO_CONTEXT; goto errout; } - /* - * ANDROS: krb5 mechglue returns ctx of size 8 - two pointers, - * one to the mechanism oid, one to the internal_ctx_id - */ - if ((gr->gr_ctx.value = mem_alloc(sizeof(gss_union_ctx_id_desc))) == NULL) { - fprintf(stderr, "svcauth_gss_accept_context: out of memory\n"); - goto errout; - } - memcpy(gr->gr_ctx.value, gd->ctx, sizeof(gss_union_ctx_id_desc)); - gr->gr_ctx.length = sizeof(gss_union_ctx_id_desc); + gr->gr_ctx.value = "xxxx"; + gr->gr_ctx.length = 4; /* gr->gr_win = 0x00000005; ANDROS: for debugging linux kernel version... */ gr->gr_win = sizeof(gd->seqmask) * 8; @@ -520,8 +502,6 @@ gssrpc__svcauth_gss(struct svc_req *rqst, struct rpc_msg *msg, if (!svcauth_gss_nextverf(rqst, htonl(gr.gr_win))) { gss_release_buffer(&min_stat, &gr.gr_token); - mem_free(gr.gr_ctx.value, - sizeof(gss_union_ctx_id_desc)); ret_freegc (AUTH_FAILED); } *no_dispatch = TRUE; @@ -531,7 +511,6 @@ gssrpc__svcauth_gss(struct svc_req *rqst, struct rpc_msg *msg, gss_release_buffer(&min_stat, &gr.gr_token); gss_release_buffer(&min_stat, &gd->checksum); - mem_free(gr.gr_ctx.value, sizeof(gss_union_ctx_id_desc)); if (!call_stat) ret_freegc (AUTH_FAILED); --- krb5-1.12.1/src/lib/gssapi/krb5/lucid_context.c.orig 2015-01-07 11:30:04.873975606 +0100 +++ krb5-1.12.1/src/lib/gssapi/krb5/lucid_context.c 2015-01-07 12:59:59.957371445 +0100 @@ -75,6 +75,11 @@ *minor_status = 0; *data_set = GSS_C_NO_BUFFER_SET; + if (ctx->terminated || !ctx->established) { + *minor_status = KG_CTX_INCOMPLETE; + return GSS_S_NO_CONTEXT; + } + retval = generic_gss_oid_decompose(minor_status, GSS_KRB5_EXPORT_LUCID_SEC_CONTEXT_OID, GSS_KRB5_EXPORT_LUCID_SEC_CONTEXT_OID_LENGTH,
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