https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5901
Summary: sgsap dissector bug - Global CN-Id IE is not decoded.
Product: Wireshark
Version: 1.5.x (Experimental)
Platform: Other
OS/Version: Windows 7
Status: NEW
Severity: Major
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: nksijin@xxxxxxxxx
Created an attachment (id=6307)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=6307)
sample capture showing the paging message with Global CN-ID
Build Information:
Version 1.5.1 (SVN Rev 36537 from /trunk)
--
SGSAP Dissector has the following bug:
While decoding the IE "Global CN-Id" in Paging message, assert fails, it shows
the following information:
Dissector bug, protocol SGSAP: proto.c:1753: failed assertion "(guint)hfindex <
gpa_hfinfo.len"
Severity: error.
Group: Malformed.
sample capture is attached.
I have checked out latest code from trunk and modified this dissector and it
works fine. Below is the svn diff:
Index: packet-sgsap.c
===================================================================
--- packet-sgsap.c (revision 37034)
+++ packet-sgsap.c (working copy)
@@ -1491,6 +1491,11 @@
FT_UINT32, BASE_DEC, NULL, 0x0fffffff,
NULL, HFILL}
},
+ { &hf_sgsap_cn_id,
+ {"CN_ID", "sgsap.cn_id",
+ FT_UINT16, BASE_DEC, NULL, 0x0ffff,
+ NULL, HFILL}
+ },
{ &hf_sgsap_imsi_det_eps,
{ "IMSI detach from EPS service type", "sgsap.imsi_det_eps",
FT_UINT8, BASE_DEC,
VALS(sgsap_imsi_det_from_eps_serv_type_values),0x0,
--
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