lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
From: daniele at muscetta.com (Daniele Muscetta) Subject: ISS Security Brief: 'MS Blast' MSRPC DCOM Worm Propagation (fwd) Sorry, Errata on my words: > On its own it is harmful. I MEANT: "IT IS *NOT* HARMFUL." Daniele >> svchost.exe listens on several ports on windows xp. >> If microsoft is saying that it should never be on the >> internet, couldn't there be more b0f's discovered in >> the future? One peculiar service "DNS Client", >> although listening on a few random ports just about >> 1024, also runs off of svchost.exe. > > svchost is a "wrapper" for services that work as DLLs instead of being > implemented with their own .EXE. > On its own it is harmful. > > It is RPC which should not listen on the internet. It's a very different > matter. > > Anyway, "DNS Client" is the DNS RESOLVER, that component that queries > the DNS for you... and it does not listen, as far as I know. > It opens of course dynamic ports >1024 as SOURCE ports, to talk to DNS > server on target port 53... what would you expect it do otherwise ? > > It also implements the dynamic record registration for DDNS, so it > REGISTERS the address of the client on the server (if instructed to do > so, and if the server supports it). > > > ...if you don't want it, you might even want to remove resolv.conf from > your linux box.... since it might be just as harmful..... :) > > > Daniele > > > > > _______________________________________________ > Full-Disclosure - We believe in it. > Charter: http://lists.netsys.com/full-disclosure-charter.html
Powered by blists - more mailing lists