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From: "Dmitry V. Levin" <ldv@alt-linux.org>
To: ALT Linux Spring mailing list <mandrake-russian@altlinux.ru>
Subject: [mdk-re] Re: [mdk-re] Нарвался на хакинг?
Date: Thu May 10 13:37:00 2001
Message-ID: <20010510134534.C9738@ldv.office.alt-linux.org> (raw)
In-Reply-To: <3AF926CE.9DAE2FC9@mtu-net.ru>; from okayunov@mtu-net.ru on Wed, May 09, 2001 at 03:15:26PM +0400

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On Wed, May 09, 2001 at 03:15:26PM +0400, Oleg N. Kayunov wrote:
> Ночью компьютер стоял на скачивании в dial-up
> Утром прочел во внутренней почте такое сообщение:
> .................................................
> Security Warning: the sha1 checksum for one of your SUID files has
> changed,
>  maybe an intruder modified one of these suid binary in order to put in
> a+backdoor...
>                 - Checksum changed files : /usr/sbin/usernetctl
> .................................................
> Сабж????
> В описании к новой версии ininscripts (я ее установил) говорилось вроде
> об улучшении работы с usb, причем здесь usernetctl?

Файл /usr/sbin/usernetctl входит в пакет initscripts.
При пересборке последнего вполне естественно изменение исполняемых файлов.

> Прочтя такое я вручную (не дожидаясь 4 часов ночи по cron) запустил
> security.sh
> и получил:
> .................................................
> Security Warning: Change in Suid Root files found :
>                 - Added suid root files : /usr/X11R6/bin/Xwrapper
>                 - Removed suid root files : /usr/X11R6/bin/Xwrapper
>  
> Security Warning: Changes in Suid Group files found :
>                 - Added suid group files : /usr/X11R6/bin/xhextris
>                 - Added suid group files : /usr/X11R6/bin/xlogical
>                 - Removed suid group files : /usr/X11R6/bin/xhextris
>                 - Removed suid group files : /usr/X11R6/bin/xlogical
>  
> Security Warning: Change in World Writeable Files found :
>                 - Added writables files : /tmp/.ICE-unix
>                 - Added writables files : /tmp/.X11-unix
>                 - Added writables files : /tmp/.X11-unix/X0
>                 - Removed writables files : /tmp/.ICE-unix
>                 - Removed writables files : /tmp/.X11-unix
>                 - Removed writables files : /tmp/.X11-unix/X0
>  
> Security Warning: the sha1 checksum for one of your SUID files has
> changed,
>         maybe an intruder modified one of these suid binary in order to
> put in+a backdoor...
>                 - Checksum changed files : /usr/X11R6/bin/Xwrapper
> .................................................
> Совсем что-то загадочное $:-b Добавлены и убраны.....

А это похоже на ошибку в security.sh
Попробуйте установить, повторяемая ли она; мне не удалось добиться
подобного эффекта.

> ЗЫ Я тут уже пару раз и по разному (письмом и через web) подписывался на
> security - рассылку и что-то ничего не вижу.
> Она еще не запустилась?

security-announce - это информационная рассылка об исправленных ошибках в
security. Загляните в архив.


Regards,
	Dmitry

+-------------------------------------------------------------------------+
Dmitry V. Levin     mailto://ldv@alt-linux.org
ALT Linux Team      http://www.altlinux.ru/
Fandra Project      http://www.fandra.org/
+-------------------------------------------------------------------------+
UNIX is user friendly. It's just very selective about who its friends are.

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      parent reply	other threads:[~2001-05-10 13:37 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-05-09 15:17 Oleg N. Kayunov
2001-05-09 18:56 ` Michael Bykov
2001-05-09 19:17   ` [mdk-re] ssh Michael Bykov
2001-05-09 19:22     ` Sergey Vlasov
2001-05-09 19:52       ` Michael Bykov
2001-05-09 20:48   ` [mdk-re] Re: [mdk-re] Нарвался на хакинг? Oleg N. Kayunov
2001-05-10 13:37 ` Dmitry V. Levin [this message]

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