From 4c11cc47e947eba9329692f857728758959078cf Mon Sep 17 00:00:00 2001
Message-Id: <4c11cc47e947eba9329692f857728758959078cf@dist-git>
From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>
Date: Wed, 15 May 2019 21:40:58 +0100
Subject: [PATCH] logging: restrict sockets to mode 0600
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The virtlogd daemon's only intended client is the libvirtd daemon. As
such it should never allow clients from other user accounts to connect.
The code already enforces this and drops clients from other UIDs, but
we can get earlier (and thus stronger) protection against DoS by setting
the socket permissions to 0600

Fixes CVE-2019-10132

Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit e37bd65f9948c1185456b2cdaa3bd6e875af680f)
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Message-Id: <20190515204058.28077-4-berrange@redhat.com>
---
 src/logging/virtlogd-admin.socket.in | 1 +
 src/logging/virtlogd.socket.in       | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/logging/virtlogd-admin.socket.in b/src/logging/virtlogd-admin.socket.in
index 595e6c4c4b..5c41dfeb7b 100644
--- a/src/logging/virtlogd-admin.socket.in
+++ b/src/logging/virtlogd-admin.socket.in
@@ -5,6 +5,7 @@ Before=libvirtd.service
 [Socket]
 ListenStream=@localstatedir@/run/libvirt/virtlogd-admin-sock
 Service=virtlogd.service
+SocketMode=0600
 
 [Install]
 WantedBy=sockets.target
diff --git a/src/logging/virtlogd.socket.in b/src/logging/virtlogd.socket.in
index 22b9360c8d..ae48cdab9a 100644
--- a/src/logging/virtlogd.socket.in
+++ b/src/logging/virtlogd.socket.in
@@ -4,6 +4,7 @@ Before=libvirtd.service
 
 [Socket]
 ListenStream=@localstatedir@/run/libvirt/virtlogd-sock
+SocketMode=0600
 
 [Install]
 WantedBy=sockets.target
-- 
2.21.0