Kevin Cernekee 19848ca7b7 netfilter: xt_osf: Add missing permission checks ...

commit 916a27901de01446bcf57ecca4783f6cff493309 upstream.

The capability check in nfnetlink_rcv() verifies that the caller
has CAP_NET_ADMIN in the namespace that "owns" the netlink socket.
However, xt_osf_fingers is shared by all net namespaces on the
system.  An unprivileged user can create user and net namespaces
in which he holds CAP_NET_ADMIN to bypass the netlink_net_capable()
check:

    vpnns -- nfnl_osf -f /tmp/pf.os

    vpnns -- nfnl_osf -f /tmp/pf.os -d

These non-root operations successfully modify the systemwide OS
fingerprint list.  Add new capable() checks so that they can't.

Signed-off-by: Kevin Cernekee <cernekee@chromium.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-01-31 14:03:41 +01:00

..

ipset

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

ipvs

netfilter: ipvs: Fix inappropriate output of procfs

2017-12-20 10:10:25 +01:00

core.c

netfilter: core: remove erroneous warn_on

2017-09-08 18:55:52 +02:00

Kconfig

netfilter: nf_tables: add fib expression to the netdev family

2017-07-31 19:01:40 +02:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

nf_conntrack_acct.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_amanda.c

netfilter: use nf_conntrack_helpers_register when possible

2017-06-19 19:13:21 +02:00

nf_conntrack_broadcast.c

netfilter: Remove duplicated rcu_read_lock.

2017-07-24 13:24:46 +02:00

nf_conntrack_core.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2017-09-06 14:45:08 -07:00

nf_conntrack_ecache.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_expect.c

net: Replace NF_CT_ASSERT() with WARN_ON().

2017-09-04 13:25:19 +02:00

nf_conntrack_extend.c

net: Replace NF_CT_ASSERT() with WARN_ON().

2017-09-04 13:25:19 +02:00

nf_conntrack_ftp.c

netfilter: helpers: remove data_len usage for inkernel helpers

2017-04-19 17:55:17 +02:00

nf_conntrack_h323_asn1.c

…

nf_conntrack_h323_main.c

netfilter: use nf_conntrack_helpers_register when possible

2017-06-19 19:13:21 +02:00

nf_conntrack_h323_types.c

…

nf_conntrack_helper.c

netfilter: expect: add and use nf_ct_expect_iterate helpers

2017-07-31 19:09:38 +02:00

nf_conntrack_irc.c

netfilter: helpers: remove data_len usage for inkernel helpers

2017-04-19 17:55:17 +02:00

nf_conntrack_l3proto_generic.c

netfilter: conntrack: place print_tuple in procfs part

2017-08-24 18:52:32 +02:00

nf_conntrack_labels.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_netbios_ns.c

netfilter: helper: add build-time asserts for helper data size

2017-04-19 17:55:16 +02:00

nf_conntrack_netlink.c

netfilter: conntrack: make protocol tracker pointers const

2017-08-24 18:52:33 +02:00

nf_conntrack_pptp.c

netfilter: Remove duplicated rcu_read_lock.

2017-07-24 13:24:46 +02:00

nf_conntrack_proto_dccp.c

netfilter: remove unused hooknum arg from packet functions

2017-09-04 13:25:18 +02:00

nf_conntrack_proto_generic.c

netfilter: remove unused hooknum arg from packet functions

2017-09-04 13:25:18 +02:00

nf_conntrack_proto_gre.c

netfilter: remove unused hooknum arg from packet functions

2017-09-04 13:25:18 +02:00

nf_conntrack_proto_sctp.c

netfilter: remove unused hooknum arg from packet functions

2017-09-04 13:25:18 +02:00

nf_conntrack_proto_tcp.c

netfilter: remove unused hooknum arg from packet functions

2017-09-04 13:25:18 +02:00

nf_conntrack_proto_udp.c

netfilter: remove unused hooknum arg from packet functions

2017-09-04 13:25:18 +02:00

nf_conntrack_proto.c

netfilter: conntrack: make protocol tracker pointers const

2017-08-24 18:52:33 +02:00

nf_conntrack_sane.c

netfilter: helpers: remove data_len usage for inkernel helpers

2017-04-19 17:55:17 +02:00

nf_conntrack_seqadj.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_sip.c

netfilter: Remove duplicated rcu_read_lock.

2017-07-24 13:24:46 +02:00

nf_conntrack_snmp.c

…

nf_conntrack_standalone.c

net: Replace NF_CT_ASSERT() with WARN_ON().

2017-09-04 13:25:19 +02:00

nf_conntrack_tftp.c

netfilter: helpers: remove data_len usage for inkernel helpers

2017-04-19 17:55:17 +02:00

nf_conntrack_timeout.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_timestamp.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_dup_netdev.c

netfilter: dup: resolve warnings about missing prototypes

2017-05-29 11:32:36 +02:00

nf_internals.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

nf_log_common.c

netfilter: nf_log: do not assume ethernet header in netdev family

2016-12-04 20:45:33 +01:00

nf_log_netdev.c

netfilter: nf_log: do not assume ethernet header in netdev family

2016-12-04 20:45:33 +01:00

nf_log.c

netfilter: nf_log: don't call synchronize_rcu in nf_log_unset

2017-05-01 11:19:07 +02:00

nf_nat_amanda.c

netfilter: nat: nf_nat_mangle_{udp,tcp}_packet returns boolean

2017-04-06 22:01:38 +02:00

nf_nat_core.c

netfilter: nat: Do not use ARRAY_SIZE() on spinlocks to fix zero div

2017-09-18 17:33:23 +02:00

nf_nat_ftp.c

…

nf_nat_helper.c

netfilter: nat: nf_nat_mangle_{udp,tcp}_packet returns boolean

2017-04-06 22:01:38 +02:00

nf_nat_irc.c

netfilter: nat: nf_nat_mangle_{udp,tcp}_packet returns boolean

2017-04-06 22:01:38 +02:00

nf_nat_proto_common.c

…

nf_nat_proto_dccp.c

netfilter: built-in NAT support for DCCP

2016-12-04 20:45:30 +01:00

nf_nat_proto_sctp.c

sctp: remove the typedef sctp_sctphdr_t

2017-07-01 09:08:41 -07:00

nf_nat_proto_tcp.c

…

nf_nat_proto_udp.c

netfilter: nat: merge udp and udplite helpers

2017-01-03 14:33:25 +01:00

nf_nat_proto_unknown.c

…

nf_nat_redirect.c

net: Replace NF_CT_ASSERT() with WARN_ON().

2017-09-04 13:25:19 +02:00

nf_nat_sip.c

…

nf_nat_tftp.c

…

nf_queue.c

netfilter: convert hook list to an array

2017-08-28 17:44:00 +02:00

nf_sockopt.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

nf_synproxy_core.c

tcp: switch TCP TS option (RFC 7323) to 1ms clock

2017-05-17 16:06:01 -04:00

nf_tables_api.c

netfilter: nf_tables: do not dump chain counters if not enabled

2017-10-06 14:49:19 +02:00

nf_tables_core.c

netfilter: constify nf_loginfo structures

2017-08-02 14:25:59 +02:00

nf_tables_inet.c

netfilter: Add the missed return value check of nft_register_chain_type

2016-09-12 19:54:45 +02:00

nf_tables_netdev.c

netfilter: nf_tables: add nft_is_base_chain() helper

2017-04-06 18:32:04 +02:00

nf_tables_trace.c

netfilter: nf_tables: Allow chain name of up to 255 chars

2017-07-31 20:41:57 +02:00

nfnetlink_acct.c

netfilter: nfnetlink: extended ACK reporting

2017-06-19 19:38:24 +02:00

nfnetlink_cthelper.c

netfilter: nfnetlink_cthelper: Add missing permission checks

2018-01-31 14:03:41 +01:00

nfnetlink_cttimeout.c

netfilter: conntrack: make protocol tracker pointers const

2017-08-24 18:52:33 +02:00

nfnetlink_log.c

netfilter: constify nf_loginfo structures

2017-08-02 14:25:59 +02:00

nfnetlink_queue.c

netfilter: nfnetlink_queue: don't queue dying conntracks to userspace

2017-07-31 19:09:39 +02:00

nfnetlink.c

netfilter: nfnetlink: Improve input length sanitization in nfnetlink_rcv

2017-07-17 13:27:46 +02:00

nft_bitwise.c

netfilter: nf_tables: revisit chain/object refcounting from elements

2017-05-15 12:51:41 +02:00

nft_byteorder.c

netfilter: nf_tables: simplify the basic expressions' init routine

2016-11-09 23:42:23 +01:00

nft_cmp.c

netfilter: nf_tables: revisit chain/object refcounting from elements

2017-05-15 12:51:41 +02:00

nft_compat.c

netfilter: nft_compat: check extension hook mask only if set

2017-07-19 11:53:30 +02:00

nft_counter.c

netfilter: nf_tables: add select_ops for stateful objects

2017-09-04 13:25:09 +02:00

nft_ct.c

netfilter: nf_tables: add select_ops for stateful objects

2017-09-04 13:25:09 +02:00

nft_dup_netdev.c

…

nft_dynset.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf

2017-05-03 10:11:26 -04:00

nft_exthdr.c

netfilter: fix a few (harmless) sparse warnings

2017-08-28 17:42:56 +02:00

nft_fib_inet.c

netfilter: nf_tables: use hook state from xt_action_param structure

2016-11-03 11:52:34 +01:00

nft_fib_netdev.c

netfilter: nf_tables: add fib expression to the netdev family

2017-07-31 19:01:40 +02:00

nft_fib.c

netfilter: nft_fib: Support existence check

2017-03-13 13:45:36 +01:00

nft_fwd_netdev.c

netfilter: add and use nf_fwd_netdev_egress

2016-12-06 21:48:22 +01:00

nft_hash.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next

2017-05-01 10:47:53 -04:00

nft_immediate.c

netfilter: nf_tables: revisit chain/object refcounting from elements

2017-05-15 12:51:41 +02:00

nft_limit.c

netfilter: nft_limit: add stateful object type

2017-09-04 13:25:16 +02:00

nft_log.c

netfilter: nft_log: restrict the log prefix length to 127

2017-01-24 21:46:29 +01:00

nft_lookup.c

netfilter: nf_tables: add nft_set_lookup()

2017-03-06 18:23:23 +01:00

nft_masq.c

netfilter: nf_tables: validate the expr explicitly after init successfully

2017-03-06 18:22:12 +01:00

nft_meta.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nft_nat.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-03-23 16:41:27 -07:00

nft_numgen.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nft_objref.c

netfilter: nf_tables: add select_ops for stateful objects

2017-09-04 13:25:09 +02:00

nft_payload.c

netfilter: fix a few (harmless) sparse warnings

2017-08-28 17:42:56 +02:00

nft_queue.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nft_quota.c

netfilter: nf_tables: add select_ops for stateful objects

2017-09-04 13:25:09 +02:00

nft_range.c

netfilter: nf_tables: revisit chain/object refcounting from elements

2017-05-15 12:51:41 +02:00

nft_redir.c

netfilter: nf_tables: validate the expr explicitly after init successfully

2017-03-06 18:22:12 +01:00

nft_reject_inet.c

netfilter: nf_tables: validate the expr explicitly after init successfully

2017-03-06 18:22:12 +01:00

nft_reject.c

netfilter: nf_tables: validate the expr explicitly after init successfully

2017-03-06 18:22:12 +01:00

nft_rt.c

netfilter: rt: account for tcp header size too

2017-08-28 18:14:30 +02:00

nft_set_bitmap.c

netfilter: nf_tables: pass set description to ->privsize

2017-05-29 12:46:18 +02:00

nft_set_hash.c

netfilter: nft_set_hash: disable fast_ops for 2-len keys

2017-10-25 14:46:44 +02:00

nft_set_rbtree.c

netfilter: nft_set_rbtree: use seqcount to avoid lock in most cases

2017-07-31 20:41:59 +02:00

x_tables.c

netfilter: x_tables: avoid stack-out-of-bounds read in xt_copy_counters_from_user

2017-10-06 15:04:05 +02:00

xt_addrtype.c

netfilter: Remove duplicated rcu_read_lock.

2017-07-24 13:24:46 +02:00

xt_AUDIT.c

audit: normalize NETFILTER_PKT

2017-05-02 10:16:04 -04:00

xt_bpf.c

netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of 'xt_bpf_info_v1'

2017-10-09 15:18:04 +02:00

xt_cgroup.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_CHECKSUM.c

…

xt_CLASSIFY.c

…

xt_cluster.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

xt_comment.c

…

xt_connbytes.c

netfilter: add and use nf_ct_netns_get/put

2016-12-04 21:16:50 +01:00

xt_connlabel.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

xt_connlimit.c

netfilter: connlimit: merge root4 and root6.

2017-08-19 13:07:53 +02:00

xt_connmark.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

xt_CONNSECMARK.c

netfilter: add and use nf_ct_netns_get/put

2016-12-04 21:16:50 +01:00

xt_conntrack.c

netfilter: kill the fake untracked conntrack objects

2017-04-15 11:47:57 +02:00

xt_cpu.c

…

xt_CT.c

netfilter: conntrack: make protocol tracker pointers const

2017-08-24 18:52:33 +02:00

xt_dccp.c

…

xt_devgroup.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_dscp.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_DSCP.c

…

xt_ecn.c

…

xt_esp.c

…

xt_hashlimit.c

netfilter: xt_hashlimit: fix build error caused by 64bit division

2017-09-08 18:55:53 +02:00

xt_helper.c

netfilter: add and use nf_ct_netns_get/put

2016-12-04 21:16:50 +01:00

xt_hl.c

…

xt_HL.c

…

xt_HMARK.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

xt_IDLETIMER.c

…

xt_ipcomp.c

netfilter: xt_ipcomp: add "ip[6]t_ipcomp" module alias name

2016-10-17 17:38:19 +02:00

xt_iprange.c

…

xt_ipvs.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

xt_l2tp.c

…

xt_LED.c

…

xt_length.c

…

xt_limit.c

netfilter: limit: use per-rule spinlock to improve the scalability

2017-03-13 19:30:31 +01:00

xt_LOG.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_mac.c

…

xt_mark.c

…

xt_multiport.c

netfilter: xt_multiport: Fix wrong unmatch result with multiple ports

2016-12-06 21:48:20 +01:00

xt_nat.c

net: Replace NF_CT_ASSERT() with WARN_ON().

2017-09-04 13:25:19 +02:00

xt_NETMAP.c

net: Replace NF_CT_ASSERT() with WARN_ON().

2017-09-04 13:25:19 +02:00

xt_nfacct.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_NFLOG.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_NFQUEUE.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_osf.c

netfilter: xt_osf: Add missing permission checks

2018-01-31 14:03:41 +01:00

xt_owner.c

sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>

2017-03-02 08:42:31 +01:00

xt_physdev.c

netfilter: physdev: add missed blank

2016-08-12 00:42:14 +02:00

xt_pkttype.c

netfilter: pkttype: unnecessary to check ipv6 multicast address

2017-01-18 20:32:43 +01:00

xt_policy.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_quota.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_rateest.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_RATEEST.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_realm.c

…

xt_recent.c

netfilter: remove unused variable

2017-07-25 12:31:37 -07:00

xt_REDIRECT.c

netfilter: nat: add dependencies on conntrack module

2016-12-04 21:16:51 +01:00

xt_repldata.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

xt_sctp.c

sctp: remove the typedef sctp_chunkhdr_t

2017-07-01 09:08:41 -07:00

xt_SECMARK.c

…

xt_set.c

netfilter: ipset: Improve skbinfo get/init helpers

2016-11-10 13:28:42 +01:00

xt_socket.c

netfilter: xt_socket: Restore mark from full sockets only

2017-09-26 20:04:34 +02:00

xt_state.c

netfilter: kill the fake untracked conntrack objects

2017-04-15 11:47:57 +02:00

xt_statistic.c

…

xt_string.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_tcpmss.c

…

xt_TCPMSS.c

netfilter: Remove duplicated rcu_read_lock.

2017-07-24 13:24:46 +02:00

xt_TCPOPTSTRIP.c

…

xt_tcpudp.c

…

xt_TEE.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_time.c

ktime: Get rid of the union

2016-12-25 17:21:22 +01:00

xt_TPROXY.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next

2017-09-03 17:08:42 -07:00

xt_TRACE.c

…

xt_u32.c

…