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Viewing changes to debian/patches/security-CVE-2010-0728.patch

  • Committer: Bazaar Package Importer
  • Author(s): Chuck Short
  • Date: 2010-03-19 21:17:40 UTC
  • mfrom: (0.27.11 upstream) (0.34.7 sid)
  • Revision ID: james.westby@ubuntu.com-20100319211740-gicih0sczyw0x1iv
Tags: 2:3.4.7~dfsg-1ubuntu1
https://launchpad.net/bugs/493565
https://launchpad.net/bugs/182572
https://launchpad.net/bugs/24741
https://launchpad.net/bugs/529290
https://launchpad.net/bugs/507374
* Merge from debian testing.  Remaining changes:
  + debian/patches/VERSION.patch:
    - set SAMBA_VERSION_SUFFIX to Ubuntu.
  + debian/smb.conf:
    - Add "(Samba, Ubuntu)" to server string.
    - Comment out the default [homes] share, and add a comment about "valid users = %s"
      to show users how to restrict access to \\server\username to only username.
    - Set 'usershare allow guests', so that usershare admins are allowed to create
      public shares in additon to authenticated ones.
    - add map to guest = Bad user, maps bad username to gues access.
  + debian/samba-common.conf:
    - Do not change priority to high if dhclient3 is installed.
    - Use priority medium instead of high for the workgroup question.
  + debian/mksambapasswd.awk:
    - Do not add user with UID less than 1000 to smbpasswd.
  + debian/control:
    - Make libswbclient0 replace/conflict with hardy's likewise-open.
    - Don't build against ctdb, since its not in main yet.
  + debian/rules:
    - Enable "native" PIE hardening.
    - Add BIND_NOW to maximize benefit of RELRO hardening.
  + Add ufw integration:
    - Created debian/samba.ufw.profile.
    - debian/rules, debian/samba.dirs, debian/samba.files: install
  + Add apport hook:
    - Created debian/source_samba.py.
    - debian/rules, debian/samba.dirs, debian/samba-common-bin.files: install
  + debian/control: Recommend keyutils for smbfs (LP: #493565)
  + debian/patches/ubuntu-gecos-fix.patch: Fix gecos parsing backported from Samba 3.5.x (LP: #182572)
  + debian/samba.postinst: Avoid scary pdbedit warnings on first import. (LP: #24741)
  + debian/samba.logrotate: Make it upstart compatible (LP: #529290)
  + debian/samba-common.dhcp: Fix typo to get a proper parsing in /etc/samba/dhcp. (LP: #507374)
  + Dropped:
    debian/patches/debian/patches/security-CVE-2010-0728.patch: Included upstream.

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debian/patches/security-CVE-2010-0728.patch
1
 
Description: fix permission bypass via incorrect CAP_DAC_OVERRIDE handling.
2
 
Origin: upstream, pulled from 3.4.7
3
 
 
4
 
diff -Nur samba-3.4.6~dfsg/source3/include/smb.h samba-3.4.6~dfsg.new/source3/include/smb.h
5
 
--- samba-3.4.6~dfsg/source3/include/smb.h      2010-02-23 04:35:42.000000000 -0500
6
 
+++ samba-3.4.6~dfsg.new/source3/include/smb.h  2010-03-08 17:50:44.000000000 -0500
7
 
@@ -1690,8 +1690,7 @@
8
 
 enum smbd_capability {
9
 
     KERNEL_OPLOCK_CAPABILITY,
10
 
     DMAPI_ACCESS_CAPABILITY,
11
 
-    LEASE_CAPABILITY,
12
 
-    KILL_CAPABILITY
13
 
+    LEASE_CAPABILITY
14
 
 };
15
 
 
16
 
 /*
17
 
diff -Nur samba-3.4.6~dfsg/source3/lib/system.c samba-3.4.6~dfsg.new/source3/lib/system.c
18
 
--- samba-3.4.6~dfsg/source3/lib/system.c       2010-02-23 04:35:42.000000000 -0500
19
 
+++ samba-3.4.6~dfsg.new/source3/lib/system.c   2010-03-08 17:50:44.000000000 -0500
20
 
@@ -592,11 +592,6 @@
21
 
 
22
 
 #if defined(HAVE_POSIX_CAPABILITIES)
23
 
 
24
 
-/* This define hasn't made it into the glibc capabilities header yet. */
25
 
-#ifndef SECURE_NO_SETUID_FIXUP
26
 
-#define SECURE_NO_SETUID_FIXUP          2
27
 
-#endif
28
 
-
29
 
 /**************************************************************************
30
 
  Try and abstract process capabilities (for systems that have them).
31
 
 ****************************************************************************/
32
 
@@ -627,32 +622,6 @@
33
 
        }
34
 
 #endif
35
 
 
36
 
-#if defined(HAVE_PRCTL) && defined(PR_SET_SECUREBITS) && defined(SECURE_NO_SETUID_FIXUP)
37
 
-        /* New way of setting capabilities as "sticky". */
38
 
-
39
 
-       /*
40
 
-        * Use PR_SET_SECUREBITS to prevent setresuid()
41
 
-        * atomically dropping effective capabilities on
42
 
-        * uid change. Only available in Linux kernels
43
 
-        * 2.6.26 and above.
44
 
-        *
45
 
-        * See here:
46
 
-        * http://www.kernel.org/doc/man-pages/online/pages/man7/capabilities.7.html
47
 
-        * for details.
48
 
-        *
49
 
-        * Specifically the CAP_KILL capability we need
50
 
-        * to allow Linux threads under different euids
51
 
-        * to send signals to each other.
52
 
-        */
53
 
-
54
 
-       if (prctl(PR_SET_SECUREBITS, 1 << SECURE_NO_SETUID_FIXUP)) {
55
 
-               DEBUG(0,("set_process_capability: "
56
 
-                       "prctl PR_SET_SECUREBITS failed with error %s\n",
57
 
-                       strerror(errno) ));
58
 
-               return false;
59
 
-       }
60
 
-#endif
61
 
-
62
 
        cap = cap_get_proc();
63
 
        if (cap == NULL) {
64
 
                DEBUG(0,("set_process_capability: cap_get_proc failed: %s\n",
65
 
@@ -681,11 +650,6 @@
66
 
                        cap_vals[num_cap_vals++] = CAP_LEASE;
67
 
 #endif
68
 
                        break;
69
 
-               case KILL_CAPABILITY:
70
 
-#ifdef CAP_KILL
71
 
-                       cap_vals[num_cap_vals++] = CAP_KILL;
72
 
-#endif
73
 
-                       break;
74
 
        }
75
 
 
76
 
        SMB_ASSERT(num_cap_vals <= ARRAY_SIZE(cap_vals));
77
 
@@ -695,37 +659,16 @@
78
 
                return True;
79
 
        }
80
 
 
81
 
-       /*
82
 
-        * Ensure the capability is effective. We assume that as a root
83
 
-        * process it's always permitted.
84
 
-        */
85
 
-
86
 
-       if (cap_set_flag(cap, CAP_EFFECTIVE, num_cap_vals, cap_vals,
87
 
-                       enable ? CAP_SET : CAP_CLEAR) == -1) {
88
 
-               DEBUG(0, ("set_process_capability: cap_set_flag effective "
89
 
-                       "failed (%d): %s\n",
90
 
-                       (int)capability,
91
 
-                       strerror(errno)));
92
 
-               cap_free(cap);
93
 
-               return false;
94
 
-       }
95
 
+       cap_set_flag(cap, CAP_EFFECTIVE, num_cap_vals, cap_vals,
96
 
+               enable ? CAP_SET : CAP_CLEAR);
97
 
 
98
 
        /* We never want to pass capabilities down to our children, so make
99
 
         * sure they are not inherited.
100
 
         */
101
 
-       if (cap_set_flag(cap, CAP_INHERITABLE, num_cap_vals,
102
 
-                       cap_vals, CAP_CLEAR) == -1) {
103
 
-               DEBUG(0, ("set_process_capability: cap_set_flag inheritable "
104
 
-                       "failed (%d): %s\n",
105
 
-                       (int)capability,
106
 
-                       strerror(errno)));
107
 
-               cap_free(cap);
108
 
-               return false;
109
 
-       }
110
 
+       cap_set_flag(cap, CAP_INHERITABLE, num_cap_vals, cap_vals, CAP_CLEAR);
111
 
 
112
 
        if (cap_set_proc(cap) == -1) {
113
 
-               DEBUG(0, ("set_process_capability: cap_set_flag (%d) failed: %s\n",
114
 
-                       (int)capability,
115
 
+               DEBUG(0, ("set_process_capability: cap_set_proc failed: %s\n",
116
 
                        strerror(errno)));
117
 
                cap_free(cap);
118
 
                return False;
119
 
diff -Nur samba-3.4.6~dfsg/source3/smbd/server.c samba-3.4.6~dfsg.new/source3/smbd/server.c
120
 
--- samba-3.4.6~dfsg/source3/smbd/server.c      2010-03-08 17:50:34.000000000 -0500
121
 
+++ samba-3.4.6~dfsg.new/source3/smbd/server.c  2010-03-08 17:50:44.000000000 -0500
122
 
@@ -1031,14 +1031,6 @@
123
 
        gain_root_privilege();
124
 
        gain_root_group_privilege();
125
 
 
126
 
-       /*
127
 
-        * Ensure we have CAP_KILL capability set on Linux,
128
 
-        * where we need this to communicate with threads.
129
 
-        * This is inherited by new threads, but not by new
130
 
-        * processes across exec().
131
 
-        */
132
 
-       set_effective_capability(KILL_CAPABILITY);
133
 
-
134
 
        fault_setup((void (*)(void *))exit_server_fault);
135
 
        dump_core_setup("smbd");
136