Potential security breach: (Audio)? Relayed by the customer between two periods of external investigation of data

I began to see the Skype to accept compatible streams recently and captured data using Wireshark. I see data sent to an IP address to my port 3619 and sent again to a different IP address. The packets have the same length inbound and outbound at about 16 Kbps. For example:

96022 543. [removed for privacy] 223.176.238.160 192.168.2.105 SKYPE 242 Audio Unk: 4

96023 543. [removed for privacy] 192.168.2.105 41.79.217.119 SKYPE 242 Audio Unk: 3

543 96024. [removed for privacy] 223.176.238.160 192.168.2.105 SKYPE 79 Audio

96025 543. [removed for privacy] 192.168.2.105 41.79.217.119 SKYPE 79 Unk Audio: 5

This is the hex data for the first two images:

0000 00 00 00 01 00 06 10 0d 7f 9B 00 08 00 08 00 a4...

0010 45 00 00 e2 46 25 00 00 2 c 11 b6 83 df ee b0 e. a0... F%..,.......
0020 c0 a8 02 69 05 77 0e 23 00 this f2 1 c fb 4 d f2... dc i.w. #... M.
0030 58 1 a 25 1 d 53 0d 36 cf a8 d4 37 10 9 X.% b2 f1 e5. ART.6. 7...
0040 ed a9 cb 8 9th e4 has e8 57 21 99 f6 9 b 83 71 7 c df... | W!... q
{[0050 65 5 d 7 d ca bd 2 c fe d2 25 b2 73 f3 4 d 9 a 39 8] e}..,... %. s.M.9.
0060 14 91 57 ca 35 of 8f 1f fc FC 29 34 2A e4 bc ba... W.5......). 4
{0070 62 34 21 90 85 8 c 6 93 7 b8 61 07 7 d d d be 25 ff b4!... l.}. a.}. %.
0080 73 d8 5A 07 73 70 b7 f7 f0 7 c 76 fd 9 d 1f 08 ee s.Z...s.p | v...
0090 ae c6 55 78 30 f2 1A dd 6 62 22 8f 1e eb b1 3f... "Ux0... nb"...?
00 a 0 2d 50 7f e1 dc 0e 4 c 13 31 df 89 7f 8f 1 d 5f 4F - P... L.. 1... _N
[00b 0 a7 0d fb a7 d4 3 a 20 d9 5 d 07 fe 58 68 2d... f5 d9:.] ... X.h.-
00C 0 ad 53 ef 6th 78 ea d1 d3 this 77 a7 1 d 29 4 9 c b2. S.n.x... w...) N
0 79 53 eb 97 00D 4 c 13 19 69 48 06 88 21 95 c6 yS e9 8f... L... i.H.. !...
84 24 9F 96 CBS 00e0 6th 1 d 41 69 3 c f7 46 fb 9 d e5 40. $... n... AI<>
00f0 d1 c6...

and

0000 00 04 00 01 00 06 49 b3 3f e0 this 33 64 00 08 00... ? I have... 3D...
0010 45 00 00 e2 1f b7 40 00 40 11 54 7 c c0 a8 02 69 E... @. @. T |...
(29 0020 d9 of the 4f 77 0e 23 47 00 6f this 48 73 5f 3d f2 f8) O.w. #oG... HS. _ =.
0030 58 1 a 25 1 d 53 0d 36 cf a8 d4 37 10 9 X.% b2 f1 e5. ART.6. 7...
0040 ed a9 cb 8 9th e4 has e8 57 21 99 f6 9 b 83 71 7 c df... | W!... q
{[0050 65 5 d 7 d ca bd 2 c fe d2 25 b2 73 f3 4 d 9 a 39 8] e}..,... %. s.M.9.
0060 14 91 57 ca 35 of 8f 1f fc FC 29 34 2A e4 bc ba... W.5......). 4
{0070 62 34 21 90 85 8 c 6 93 7 b8 61 07 7 d d d be 25 ff b4!... l.}. a.}. %.
0080 73 d8 5A 07 73 70 b7 f7 f0 7 c 76 fd 9 d 1f 08 ee s.Z...s.p | v...
0090 ae c6 55 78 30 f2 1A dd 6 62 22 8f 1e eb b1 3f... "Ux0... nb"...?
00 a 0 2d 50 7f e1 dc 0e 4 c 13 31 df 89 7f 8f 1 d 5f 4F - P... L.. 1... _N
[00b 0 a7 0d fb a7 d4 3 a 20 d9 5 d 07 fe 58 68 2d... f5 d9:.] ... X.h.-
00C 0 ad 53 ef 6th 78 ea d1 d3 this 77 a7 1 d 29 4 9 c b2. S.n.x... w...) N
0 79 53 eb 97 00D 4 c 13 19 69 48 06 88 21 95 c6 yS e9 8f... L... i.H.. !...
84 24 9F 96 CBS 00e0 6th 1 d 41 69 3 c f7 46 fb 9 d e5 40. $... n... AI<>
00f0 d1 c6...

Here's Skype data only on these images:

1 0000 c fb 4 d f2 58 1 a 25 1 d 53 0d 36 cf a8 f1 d4 e5... M.X.%. ART.6.
0010 37 10 9th ed a9 b2 9th e4 cb 8 has df 7 57 21 99 7 c e8... | W!
{[0020 9 b 83 71 and 5 d 65 f6 7 d ca bd 2 c fe d2 25 b2 73 f3... q] e}..,... per cent .s.
0030 4 d 9 a 39 8 14 91 57 ca 35 of 8f 1f fc FC 29 M9 ba... W.5......)
0040 bc 34 e4 2 a 62 34 21 90 85 8 c d 6 93 7 61 07 d b8. {* 4 b4!... l.}. one.
{0050 7 d be 25 ff 73 5A f0 f7 07 73 70 76 fd 7 c b7 d8}. %. s.Z...s.p | v.
0060 9 d 1f 08 ee ae 55 78 30 f2 1A dd 6 62 22 8f c6... "Ux0... nb.
0070 1st eb b1 3f 2d 50 7f e1 4 c 13 31 df 7f, 8f 0e dc? -P.... L.. 1...
0080 89 1 d 5f 4th a7 fb a7 d4 3 a 20 d9 5 d 07 fe 58 0d... _N.....: .].. X
0090 d9 68 f5 2d 53 ef ad 6 78 ea d1 d3 this 77 b2 9 c .h.-. S.n.x... w...
00 a 0 a7 1 d 29 4th 79 53 97 eb 13 19 69 48 e9 8f 4 c 06) NyS... L... i.H.
00b 0 88 21 95 c6 84 24 9F 96 CBS 6th 1 d 41 69 3 c f7 fb. ! ...$...n.. AI<>
0 46 40 d1 c6 F e5 9 d 00C... @..

and

0000 f8 5f 3d f2 58 1 a 25 1 d 53 0d 36 cf a8 f1 d4 e5. _ =. X.%. ART.6.
0010 37 10 9th ed a9 b2 9th e4 cb 8 has df 7 57 21 99 7 c e8... | W!
{[0020 9 b 83 71 and 5 d 65 f6 7 d ca bd 2 c fe d2 25 b2 73 f3... q] e}..,... per cent .s.
0030 4 d 9 a 39 8 14 91 57 ca 35 of 8f 1f fc FC 29 M9 ba... W.5......)
0040 bc 34 e4 2 a 62 34 21 90 85 8 c d 6 93 7 61 07 d b8. {* 4 b4!... l.}. one.
{0050 7 d be 25 ff 73 5A f0 f7 07 73 70 76 fd 7 c b7 d8}. %. s.Z...s.p | v.
0060 9 d 1f 08 ee ae 55 78 30 f2 1A dd 6 62 22 8f c6... "Ux0... nb.
0070 1st eb b1 3f 2d 50 7f e1 4 c 13 31 df 7f, 8f 0e dc? -P.... L.. 1...
0080 89 1 d 5f 4th a7 fb a7 d4 3 a 20 d9 5 d 07 fe 58 0d... _N.....: .].. X
0090 d9 68 f5 2d 53 ef ad 6 78 ea d1 d3 this 77 b2 9 c .h.-. S.n.x... w...
00 a 0 a7 1 d 29 4th 79 53 97 eb 13 19 69 48 e9 8f 4 c 06) NyS... L... i.H.
00b 0 88 21 95 c6 84 24 9F 96 CBS 6th 1 d 41 69 3 c f7 fb. ! ...$...n.. AI<>
0 46 40 d1 c6 F e5 9 d 00C... @..

I checked that these packages had been sent by the process of Skype. The change of IP addresses from time to time and sometimes it there streaming in all. I was not on any Skype call during this period. I have a file pcapng I can provide private these packages with over 200 k. I checked many of the IP addresses and found that all the ones I checked were on blacklists of some sort, so it may be the zombie PCs using Skype on other PC to transmit information or calls.

I use Skype 4.3.0.37 on Ubuntu 14.04 (updated). I checked the Skype updates, and he says I'm on the latest version. I tried to go through the process of reporting of security vulnerabilities and I had the choice to post here or wait for 20 minutes to chat with someone...

Please contact me directly. I make sure that my contact information on my Skype profile is up-to-date.

HTH

-Leo

I never said I could say what username was seen providing the past, I said that I could tell the IP addresses. That's all that is needed to find potentially vulnerable customers without the additional chore of scanning random IP.

In any case, I have already recommended that we spend our communication elsewhere. Is not not be able to control how traffic passed to third parties unsecured is a deal breaker for us.

Thank you very much for your answers. My question has been answered and my obviously concerns do not match that of Microsoft, so I end up in a dead end with this service.

Tags: Skype

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