From 822625de3d5dc7675e37af1c383ff1d42d943c86 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 11 Apr 2012 13:19:26 +0200
Subject: [PATCH] main: unset some bash specific environment variables that
 might get leaked to us

https://bugzilla.redhat.com/show_bug.cgi?id=811537
(cherry picked from commit 9543ad166338a7bef8718070f11465df4b9badd7)
---
 src/main.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main.c b/src/main.c
index a0bcbdf..6656cb4 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1343,6 +1343,12 @@ int main(int argc, char *argv[]) {
                 unsetenv("HOME");
                 unsetenv("TERM");
 
+                /* When we are invoked by a shell, these might be set,
+                 * but make little sense to pass on */
+                unsetenv("PWD");
+                unsetenv("SHLVL");
+                unsetenv("_");
+
                 /* All other variables are left as is, so that clients
                  * can still read them via /proc/1/environ */
         }