From 3d338556760632b9c8b646a719d56e02e3ad2088 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 20 Mar 2019 19:20:35 +0100
Subject: [PATCH] analyze: check for RestrictSUIDSGID= in "systemd-analyze
security"
And let's give it a heigh weight, since it pretty much can be used for
bad things only.
(cherry picked from commit 9d880b70ba5c6ca83c82952f4c90e86e56c7b70c)
Related: #1687512
---
src/analyze/analyze-security.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/analyze/analyze-security.c b/src/analyze/analyze-security.c
index eec040d5c3..969101c57b 100644
--- a/src/analyze/analyze-security.c
+++ b/src/analyze/analyze-security.c
@@ -69,6 +69,7 @@ struct security_info {
uint64_t restrict_namespaces;
bool restrict_realtime;
+ bool restrict_suid_sgid;
char *root_directory;
char *root_image;
@@ -1130,6 +1131,16 @@ static const struct security_assessor security_assessor_table[] = {
.assess = assess_bool,
.offset = offsetof(struct security_info, restrict_realtime),
},
+ {
+ .id = "RestrictSUIDSGID=",
+ .url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictSUIDSGID=",
+ .description_good = "SUID/SGID file creation by service is restricted",
+ .description_bad = "Service may create SUID/SGID files",
+ .weight = 1000,
+ .range = 1,
+ .assess = assess_bool,
+ .offset = offsetof(struct security_info, restrict_suid_sgid),
+ },
{
.id = "RestrictNamespaces=~CLONE_NEWUSER",
.url = "https://www.freedesktop.org/software/systemd/man/systemd.exec.html#RestrictNamespaces=",
@@ -1862,6 +1873,7 @@ static int acquire_security_info(sd_bus *bus, const char *name, struct security_
{ "RestrictAddressFamilies", "(bas)", property_read_restrict_address_families, 0 },
{ "RestrictNamespaces", "t", NULL, offsetof(struct security_info, restrict_namespaces) },
{ "RestrictRealtime", "b", NULL, offsetof(struct security_info, restrict_realtime) },
+ { "RestrictSUIDSGID", "b", NULL, offsetof(struct security_info, restrict_suid_sgid) },
{ "RootDirectory", "s", NULL, offsetof(struct security_info, root_directory) },
{ "RootImage", "s", NULL, offsetof(struct security_info, root_image) },
{ "SupplementaryGroups", "as", NULL, offsetof(struct security_info, supplementary_groups) },