On 3/23/15 9:35 PM, Rui Paulo wrote:
On Mar 23, 2015, at 19:25, Bryan Drewery <bdrew...@freebsd.org> wrote:
On 3/23/15 9:17 PM, Rui Paulo wrote:
Author: rpaulo
Date: Tue Mar 24 02:17:17 2015
New Revision: 280410
URL: https://svnweb.freebsd.org/changeset/base/280410
Log:
Disable coredump_devctl because it could lead to leaking paths to
jails.
Modified:
head/sys/kern/kern_sig.c
Modified: head/sys/kern/kern_sig.c
==============================================================================
--- head/sys/kern/kern_sig.c Tue Mar 24 01:32:46 2015 (r280409)
+++ head/sys/kern/kern_sig.c Tue Mar 24 02:17:17 2015 (r280410)
@@ -180,7 +180,7 @@ static int set_core_nodump_flag = 0;
SYSCTL_INT(_kern, OID_AUTO, nodump_coredump, CTLFLAG_RW,
&set_core_nodump_flag,
0, "Enable setting the NODUMP flag on coredump files");
-static int coredump_devctl = 1;
+static int coredump_devctl = 0;
SYSCTL_INT(_kern, OID_AUTO, coredump_devctl, CTLFLAG_RW, &coredump_devctl,
0, "Generate a devctl notification when processes coredump");
If there is a security concern about this feature I think more needs to be done
than just flipping the default. It could easily be forgotten about and make a
release.
Sure, but to be honest there are already sysctls that make your system insecure
and we've been making releases with them for many years.
--
Rui Paulo
I just think the known issue should be documented at the least.
--
Regards,
Bryan Drewery
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