/[smeserver]/rpms/samba/sme10/CVE-2017-15275.patch
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Contents of /rpms/samba/sme10/CVE-2017-15275.patch

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Revision 1.1 - (show annotations) (download)
Tue May 8 16:37:53 2018 UTC (6 years, 5 months ago) by jpp
Branch: MAIN
CVS Tags: samba-4_6_2-12_el7_4, samba--, samba-4_6_2-12_3_el7_sme, samba-4_6_2-12_4_el7_sme, samba-4_6_2-12_2_el7_sme
upgrade to samba-4.6.2-12

1 From 6dd87a82a733184df3a6f09e020f6a3c2b365ca2 Mon Sep 17 00:00:00 2001
2 From: Jeremy Allison <jra@samba.org>
3 Date: Wed, 20 Sep 2017 11:04:50 -0700
4 Subject: [PATCH] s3: smbd: Chain code can return uninitialized memory when
5 talloc buffer is grown.
6
7 Ensure we zero out unused grown area.
8
9 CVE-2017-15275
10
11 BUG: https://bugzilla.samba.org/show_bug.cgi?id=13077
12
13 Signed-off-by: Jeremy Allison <jra@samba.org>
14 ---
15 source3/smbd/srvstr.c | 14 ++++++++++++++
16 1 file changed, 14 insertions(+)
17
18 diff --git a/source3/smbd/srvstr.c b/source3/smbd/srvstr.c
19 index 56dceba8c6c..c2d70b32c32 100644
20 --- a/source3/smbd/srvstr.c
21 +++ b/source3/smbd/srvstr.c
22 @@ -110,6 +110,20 @@ ssize_t message_push_string(uint8_t **outbuf, const char *str, int flags)
23 DEBUG(0, ("srvstr_push failed\n"));
24 return -1;
25 }
26 +
27 + /*
28 + * Ensure we clear out the extra data we have
29 + * grown the buffer by, but not written to.
30 + */
31 + if (buf_size + result < buf_size) {
32 + return -1;
33 + }
34 + if (grow_size < result) {
35 + return -1;
36 + }
37 +
38 + memset(tmp + buf_size + result, '\0', grow_size - result);
39 +
40 set_message_bcc((char *)tmp, smb_buflen(tmp) + result);
41
42 *outbuf = tmp;
43 --
44 2.14.2.920.gcf0c67979c-goog
45

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