46 lines
1.6 KiB
Diff
46 lines
1.6 KiB
Diff
From 651c1fdee084cbf9a25d5131ebe367d6d1473ca5 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
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Date: Mon, 10 May 2021 12:12:38 +0200
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Subject: [PATCH] libselinux: selinux_check_passwd_access_internal(): respect
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deny_unknown
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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`selinux_check_passwd_access_internal()`, and thereby
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`checkPasswdAccess(3)` and `selinux_check_passwd_access(3)`, does not
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respect the policy defined setting of `deny_unknown`, like
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`selinux_check_access(3)` does.
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This means in case the security class `passwd` is not defined, success
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is returned instead of failure, i.e. permission denied.
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Most policies should define the `passwd` class and the two affected
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public functions are marked deprecated.
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Align the behavior with `selinux_check_access(3)` and respect
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the deny_unknown setting in case the security class is not defined.
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Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
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---
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libselinux/src/checkAccess.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff --git a/libselinux/src/checkAccess.c b/libselinux/src/checkAccess.c
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index b337ea64f977..022cd6b5ecab 100644
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--- a/libselinux/src/checkAccess.c
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+++ b/libselinux/src/checkAccess.c
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@@ -78,7 +78,9 @@ static int selinux_check_passwd_access_internal(access_vector_t requested)
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passwd_class = string_to_security_class("passwd");
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if (passwd_class == 0) {
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freecon(user_context);
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- return 0;
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+ if (security_deny_unknown() == 0)
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+ return 0;
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+ return -1;
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}
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retval = security_compute_av_raw(user_context,
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--
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2.32.0.rc1
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