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libsmb: Protect cli_RNetServerEnum against rprcnt<6
author
Volker Lendecke
<vl@samba.org>
Sat, 2 May 2020 13:10:14 +0000
(15:10 +0200)
committer
Karolin Seeger
<kseeger@samba.org>
Thu, 14 May 2020 14:28:15 +0000
(14:28 +0000)
Bug: https://bugzilla.samba.org/show_bug.cgi?id=14366
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
(cherry picked from commit
ce8b70df7bd63e96723b8e8dc864f1690f5fad7b
)
source3/libsmb/clirap.c
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diff --git
a/source3/libsmb/clirap.c
b/source3/libsmb/clirap.c
index 9b7f54c503b1edb2a0bb968a6382c963a9ecd0c7..16c1a502380145756fa9562c26f27906d1eb192c 100644
(file)
--- a/
source3/libsmb/clirap.c
+++ b/
source3/libsmb/clirap.c
@@
-372,6
+372,13
@@
bool cli_NetServerEnum(struct cli_state *cli, char *workgroup, uint32_t stype,
}
rdata_end = rdata + rdrcnt;
+
+ if (rprcnt < 6) {
+ DBG_ERR("Got invalid result: rprcnt=%u\n", rprcnt);
+ res = -1;
+ break;
+ }
+
res = rparam ? SVAL(rparam,0) : -1;
if (res == 0 || res == ERRmoredata ||