search for: dissector

>Submitter-Id: current-users >Originator: Eygene Ryabinkin >Organization: Code Labs >Confidential: no >Synopsis: [patch] [vuxml] net/wireshark: fix DoS in SMTP dissector >Severity: serious >Priority: high >Category: ports >Class: sw-bug >Release: FreeBSD 7.1-PRERELEASE i386 >Environment: System: FreeBSD 7.1-PRERELEASE i386 >Description: Today the DoS possibility for Wireshark was disclosed via BugTraq list: http://www.securityfocus.com/arch...

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 G'day. Please find attached a basic ethereal dissector for the rsync network (client/server) protocol. I have only lightly tested it. I am not sure how much more time I can spend on this, so I am releasing it "as is". Admitedly, this dissector doesn't do a real lot, but it should provide a basis for identifying further work required,...

...c/libvirt/libvirtd.conf*: *listen_tls = 0listen_tcp = 1tcp_port = "16509"auth_tcp = "none"* Libvirtd started with options *--listen* 3. Check wireshark libvirt plugin: Open menu: *Help* --> *About* *wireshark* --> *Plugins*. Libvirt plugin is found: *libvirt.so 4.1.0 dissector /usr/lib/x86_64-linux-gnu/w…rk/plugins/2.4.5/libvirt.so* 4. Set wireshark listening on *lo* interface and filter as 'tcp.port==16509'. Execute virsh command via tcp protocol: $ virsh -c qemu+tcp://localhost/system list In wireshark, packets are parsed as TCP protocol. And I cannot find L...

...eated 1.12.6 directory under plugins and copied above .so. /usr/lib64/wireshark/plugins/1.12.6/libvirt.so # tshark -G protocols | grep -i libvirt Libvirt libvirt libvirt # tshark -r libvirt.pcap libvirt # Are there any dependency between libvirt and wireshark dissector mechanism to co-exist and work together (ie. whether the above libvirt-wireshark missing some changes that dissector expecting ??). If you have sample pcap to recheck my wireshark/tshark, could you please share with me ? Regards, Gowrishankar On Thursday 29 October 2015 06:18 PM, Michal Privoz...

Thank you Michal. With your pcap, I could confirm that, libvirt dissector worked in my environment as well. Yes, it could be that, my pcap do not have libvirt rpc packets correctly though I would have expected. I am checking on it. Regards, Gowrishankar On Thursday 07 January 2016 03:51 PM, Michal Privoznik wrote: > On 07.01.2016 08:05, gowrishankar wrote: >&gt...

..., > > > > > > > > I got this warning today. I cant tell when and why this happened, so I do not know yet how to reproduce. > > > > Maybe someone has a quick idea. > > > > > > > > [85109.572032] WARNING: CPU: 30 PID: 197360 at net/core/flow_dissector.c:764 __skb_flow_dissect+0x1f0/0x1318 > > > > > > I managed to trigger this warning as well the other day, but from a > > > different call path: > > > > > > [280155.348610] fib_multipath_hash+0x28c/0x2d0 > > > [280155.348613] ? fib_multipath_h...

Hi, I am trying libvirt plugin in wireshark to dissect RPC payload in TCP, but finding dissector code not really working. My env is Fedora core 21 (x86_64) and installed packages are as follow: wireshark-1.12.6-1.fc21.x86_64 libvirt-wireshark-1.2.9.3-2.fc21.x86_64 Earlier, just after installation, I noticed libvirt.so available only in /usr/lib64/wireshark/plugins/1.12.5/ . Wires...

...ng to fetch an absolute time value with length 6] [Severity level: Warn] [Group: Malformed] Time Signed: Jan 1, 1970 15:39:44.000000000 ACST Fudge: 300 MAC Size: 28 MAC [Expert Info (Warn/Undecoded): No dissector for algorithm:gss-tsig] [No dissector for algorithm:gss-tsig] [Severity level: Warn] [Group: Undecoded] Original Id: 38945 Error: No error (0) Other Len: 0 Could the apparently malformed "Time Sign...

...ic on loopback and I think it is expected, but thinking how you get those captured ?. Any pointers/suggestions ? Appreciating your help. Regards, Gowrishankar On Thursday 07 January 2016 04:48 PM, gowrishankar wrote: > Thank you Michal. > > With your pcap, I could confirm that, libvirt dissector worked in my > environment as well. > Yes, it could be that, my pcap do not have libvirt rpc packets > correctly though I would have > expected. I am checking on it. > > Regards, > Gowrishankar > > On Thursday 07 January 2016 03:51 PM, Michal Privoznik wrote: >> O...

...0100, Christian Borntraeger wrote: > > Folks, > > > > I got this warning today. I cant tell when and why this happened, so I do not know yet how to reproduce. > > Maybe someone has a quick idea. > > > > [85109.572032] WARNING: CPU: 30 PID: 197360 at net/core/flow_dissector.c:764 __skb_flow_dissect+0x1f0/0x1318 > > I managed to trigger this warning as well the other day, but from a > different call path: > > [280155.348610] fib_multipath_hash+0x28c/0x2d0 > [280155.348613] ? fib_multipath_hash+0x28c/0x2d0 > [280155.348619] fib_select_path+0x241/...

...bvirt.pcap libvirt > # > Interesting. This indeed may be that your pcap file does not contain any libvirt packets. Esp. if you tested it locally - if you haven't specified to use TCP stack, UNIX socket is used by default. > Are there any dependency between libvirt and wireshark dissector > mechanism to co-exist and > work together (ie. whether the above libvirt-wireshark missing some > changes that dissector > expecting ??). If you have sample pcap to recheck my wireshark/tshark, > could you please > share with me ? Sure: https://mprivozn.fedorapeople.org/libvir...

...ipe for target 'all-recursive' failed make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory '/root/libvirt' Makefile:1897: recipe for target 'all' failed make: *** [all] Error 2 When I disable wireshark support, make successfully. # ./configure --without-wireshark-dissector && make But the file gmodule.h and glib.h exist on my system: # locate gmodule.h /usr/include/glib-2.0/gmodule.h # locate glib.h /usr/include/glib-2.0/glib.h /usr/share/gtk-doc/html/glib/glib.html /usr/src/kernels/4.5.0-0.rc0.git1.1.fc24.x86_64/include/config/blk/dev/bsglib.h /usr/src/k...

...ith-capng --without-fuse --with-netcf --with-selinux --with-selinux-mount=/sys/fs/selinux --without-apparmor --without-hal --with-udev --with-yajl --with-sanlock --with-libpcap --with-macvtap --with-audit --with-dtrace --with-driver-modules --with-firewalld --with-firewalld-zone --without-wireshark-dissector --without-pm-utils --with-nss-plugin --with-qemu-user=qemu --with-qemu-group=qemu --with-tls-priority=@LIBVIRT,SYSTEM --enable-werror --enable-expensive-tests --with-init-script=systemd --without-login-shell # make Then error appears: make[2]: Entering directory '/root/libvirt/build/include/li...

...f 48 80 18 02 00 00 44 00 00 01 01 08 0a c9 4f > 0050 f4 f2 c9 4f f4 f2 00 00 00 1c 20 00 80 86 00 00 > 0060 00 01 00 00 00 42 00 00 00 00 00 00 00 00 00 00 > 0070 00 00 > > bytes 0x56-0x59 contain 0x1c (= 28) which is the length of the packet > (28 bytes). This is how our dissector decodes it: > > Libvirt > length: 28 > program: REMOTE (0x20008086) > version: 1 > procedure: AUTH_LIST (66) > type: CALL (0) > serial: 0 > status: OK (0) > > > Michal > >

...40AM +0100, Christian Borntraeger wrote: >> Folks, >> >> I got this warning today. I cant tell when and why this happened, so I do not know yet how to reproduce. >> Maybe someone has a quick idea. >> >> [85109.572032] WARNING: CPU: 30 PID: 197360 at net/core/flow_dissector.c:764 __skb_flow_dissect+0x1f0/0x1318 > > I managed to trigger this warning as well the other day, but from a > different call path: FWIW, it also seems to happen on 4.20-rc1. 4.19.0 seems fine. bisect seem to have failed so my reproducer is not reliable. > > [280155.348526] WARN...

...ranches, and the following sections, please visit <URL:http://security.FreeBSD.org/>. I. Background Tcpdump is a commonly used network diagnostic utility which decodes packets received on the wire into human readable format. II. Problem Description An un-checked return value in the BGP dissector code can result in an integer overflow. This value is used in subsequent buffer management operations, resulting in a stack based buffer overflow under certain circumstances. III. Impact By crafting malicious BGP packets, an attacker could exploit this vulnerability to execute code or crash the...

...ranches, and the following sections, please visit <URL:http://security.FreeBSD.org/>. I. Background Tcpdump is a commonly used network diagnostic utility which decodes packets received on the wire into human readable format. II. Problem Description An un-checked return value in the BGP dissector code can result in an integer overflow. This value is used in subsequent buffer management operations, resulting in a stack based buffer overflow under certain circumstances. III. Impact By crafting malicious BGP packets, an attacker could exploit this vulnerability to execute code or crash the...

Hello all, I have been trying to get libvirtd to work but when I connect to it with virsh, I get "error : virNetMessageDecodeLength:131 : Unable to decode message length" This happens with libvirt 6.1.0, libtirpc 1.2.6, rpcsvc-proto 1.4.1. I have tried with other versions, but I still get the same error. If anybody has any tip on what to try next, that would be helpful. Thank you

On 26.10.2015 11:38, gowrishankar wrote: > > Hi, > I am trying libvirt plugin in wireshark to dissect RPC payload in TCP, but > finding dissector code not really working. > > My env is Fedora core 21 (x86_64) and installed packages are as follow: > > wireshark-1.12.6-1.fc21.x86_64 > libvirt-wireshark-1.2.9.3-2.fc21.x86_64 > > > Earlier, just after installation, I noticed libvirt.so available only in > /...

Hi! How can i'm subscribe in my app to domain lifecycle messages? Does it possible to subscribe for all domains and not just one? -- Vasiliy Tolstov, e-mail: v.tolstov@selfip.ru