From 4c1f1ed13b794b7826421933cb5a933368e35736 Mon Sep 17 00:00:00 2001 From: jc_gargma Date: Tue, 6 Feb 2018 18:15:42 -0800 Subject: Updated to 4.14.17.a --- ...lter-xt_osf-Add-missing-permission-checks.patch | 60 ---------------------- 1 file changed, 60 deletions(-) delete mode 100644 CVE-2017-17450-netfilter-xt_osf-Add-missing-permission-checks.patch (limited to 'CVE-2017-17450-netfilter-xt_osf-Add-missing-permission-checks.patch') diff --git a/CVE-2017-17450-netfilter-xt_osf-Add-missing-permission-checks.patch b/CVE-2017-17450-netfilter-xt_osf-Add-missing-permission-checks.patch deleted file mode 100644 index 992c336..0000000 --- a/CVE-2017-17450-netfilter-xt_osf-Add-missing-permission-checks.patch +++ /dev/null @@ -1,60 +0,0 @@ -From 916a27901de01446bcf57ecca4783f6cff493309 Mon Sep 17 00:00:00 2001 -From: Kevin Cernekee -Date: Tue, 5 Dec 2017 15:42:41 -0800 -Subject: [PATCH] netfilter: xt_osf: Add missing permission checks - -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 -Signed-off-by: Pablo Neira Ayuso ---- - net/netfilter/xt_osf.c | 7 +++++++ - 1 file changed, 7 insertions(+) - -diff --git a/net/netfilter/xt_osf.c b/net/netfilter/xt_osf.c -index 36e14b1f061d..a34f314a8c23 100644 ---- a/net/netfilter/xt_osf.c -+++ b/net/netfilter/xt_osf.c -@@ -19,6 +19,7 @@ - #include - #include - -+#include - #include - #include - #include -@@ -70,6 +71,9 @@ static int xt_osf_add_callback(struct net *net, struct sock *ctnl, - struct xt_osf_finger *kf = NULL, *sf; - int err = 0; - -+ if (!capable(CAP_NET_ADMIN)) -+ return -EPERM; -+ - if (!osf_attrs[OSF_ATTR_FINGER]) - return -EINVAL; - -@@ -115,6 +119,9 @@ static int xt_osf_remove_callback(struct net *net, struct sock *ctnl, - struct xt_osf_finger *sf; - int err = -ENOENT; - -+ if (!capable(CAP_NET_ADMIN)) -+ return -EPERM; -+ - if (!osf_attrs[OSF_ATTR_FINGER]) - return -EINVAL; - --- -2.15.1 - -- cgit v1.2.1