https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6625
Summary: xmpp decoder crashes when xml is disabled
Product: Wireshark
Version: SVN
Platform: All
OS/Version: All
Status: NEW
Severity: Major
Priority: Low
Component: TShark
AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
ReportedBy: sbin23435@xxxxxxxxxxxxxx
Build Information:
TShark 1.7.1 (SVN Rev 40033 from /trunk)
Compiled (64-bit) with GLib 2.30.0, with libpcap 1.1.1, with libz 1.2.3.4, with
POSIX capabilities (Linux), with SMI 0.4.8, with c-ares 1.7.4, with Lua 5.1,
without Python, with GnuTLS 2.10.5, with Gcrypt 1.5.0, with MIT Kerberos, with
GeoIP.
Built using gcc 4.6.1.
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wireshark segmentation fault when opening xmpp trace, but with xml in
disabled_protos
gdb backtrace:
#0 xmpp_xml_frame_to_element_t (xml_frame=0x7fff00000000, parent=0x0,
tvb=0x16df0c0)
at ../../../wireshark/epan/dissectors/packet-xmpp-utils.c:537
#1 0x00007ffff5ad1473 in dissect_xmpp (tvb=0x16df0c0, pinfo=0x7fffffffd820,
tree=0x7ffff7fef000)
at ../../../wireshark/epan/dissectors/packet-xmpp.c:454
#2 0x00007ffff543d6c0 in call_dissector_through_handle (handle=0x1320c70,
tvb=0x16df0c0, pinfo=0x7fffffffd820, tree=0x7ffff7fef000)
at ../../wireshark/epan/packet.c:386
probably because xml cannot be called, so the private_info is presumably
wrong(?) but not NULL, and the first_child is not in valid memory
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