Patchwork [CONSOLIDATED,PULL,5/6] libpam: Setting suid bit for unix_chkpwd

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Submitter Saul Wold
Date Aug. 24, 2011, 3:50 p.m.
Message ID <c23a3cd68385563a16d5bbc899e26f35cdc6c2cf.1314200868.git.sgw@linux.intel.com>
Download mbox | patch
Permalink /patch/10491/
State New, archived
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Comments

Saul Wold - Aug. 24, 2011, 3:50 p.m.
From: Wenzong Fan <wenzong.fan@windriver.com>

[YOCTO #1252]

While pam_unix.so required by an application on lsb image, it will need to
call the unix_chkpwd to get userinfo from shadow file. This fix get a normal
user could read shadow file via unix_chkpwd.

Signed-off-by: Wenzong Fan <wenzong.fan@windriver.com>
---
 meta/recipes-extended/pam/libpam_1.1.4.bb |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

Patch

diff --git a/meta/recipes-extended/pam/libpam_1.1.4.bb b/meta/recipes-extended/pam/libpam_1.1.4.bb
index ae20a97..d6f95b1 100644
--- a/meta/recipes-extended/pam/libpam_1.1.4.bb
+++ b/meta/recipes-extended/pam/libpam_1.1.4.bb
@@ -9,7 +9,7 @@  SECTION = "base"
 LICENSE = "GPLv2+ | BSD"
 LIC_FILES_CHKSUM = "file://COPYING;md5=ca0395de9a86191a078b8b79302e3083"
 
-PR = "r1"
+PR = "r2"
 
 DEPENDS = "bison flex cracklib"
 RDEPENDS_${PN}-runtime = "libpam pam-plugin-deny pam-plugin-permit pam-plugin-warn pam-plugin-unix"
@@ -85,3 +85,9 @@  do_install() {
 	install -d ${D}${sysconfdir}/pam.d/     
 	install -m 0644 ${WORKDIR}/pam.d/* ${D}${sysconfdir}/pam.d/
 }
+
+pkg_postinst_pam-plugin-unix () {
+    # below is necessary to allow unix_chkpwd get user info from shadow file
+    # on lsb images
+    chmod 4755 ${sbindir}/unix_chkpwd
+}