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Upstream-Status: Backport
Fix for CVE-2010-4708
Change default for user_readenv to 0 and document the
new default for user_readenv.
This fix is got from:
http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/modules/pam_env
/pam_env.c?r1=1.22&r2=1.23&view=patch
http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/modules/pam_env
/pam_env.8.xml?r1=1.7&r2=1.8&view=patch
Signed-off-by: Wenzong Fan <wenzong.fan@windriver.com>
---
--- a/modules/pam_env/pam_env.c 2012-09-05 13:57:47.000000000 +0800
+++ b/modules/pam_env/pam_env.c 2012-09-05 13:58:05.000000000 +0800
@@ -10,7 +10,7 @@
#define DEFAULT_READ_ENVFILE 1
#define DEFAULT_USER_ENVFILE ".pam_environment"
-#define DEFAULT_USER_READ_ENVFILE 1
+#define DEFAULT_USER_READ_ENVFILE 0
#include "config.h"
--- a/modules/pam_env/pam_env.8.xml 2012-09-05 13:58:24.000000000 +0800
+++ b/modules/pam_env/pam_env.8.xml 2012-09-05 13:59:36.000000000 +0800
@@ -147,7 +147,10 @@
<listitem>
<para>
Turns on or off the reading of the user specific environment
- file. 0 is off, 1 is on. By default this option is on.
+ file. 0 is off, 1 is on. By default this option is off as user
+ supplied environment variables in the PAM environment could affect
+ behavior of subsequent modules in the stack without the consent
+ of the system administrator.
</para>
</listitem>
</varlistentry>
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