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Re: lug-bg: Local root exploit v linux kernelite <2.2.15 i <=2.4.20


  • Subject: Re: lug-bg: Local root exploit v linux kernelite <2.2.15 i <=2.4.20
  • From: gf@email.domain.hidden (Georgi Chorbadzhiyski)
  • Date: Wed, 19 Mar 2003 07:13:02 +0200


Âàñèë Êîëåâ wrote:
<em class="quotelev1">>    Tova go vidqh predi malko, i mislq, che e hubavo da se postne i tuk -
<em class="quotelev1">> ima otkrit local root exploit prez ptrace() v linux kernela. Za poveche
<em class="quotelev1">> podrobnosti mozhete da vidite
<em class="quotelev1">> http://www.uwsg.indiana.edu/hypermail/linux/kernel/0303.2/0226.html ili
<em class="quotelev1">> http://marc.theaimsgroup.com/?l=linux-kernel&m=104791735604202&w=2 
<em class="quotelev1">> Kakto si pishe tam, 2.2.15 e fixnatiq kernel za 2.2 seriite, a za 2.4
<em class="quotelev1">> mozhete da si svalite patch-a ot 
<em class="quotelev1">>  http://www.hardrock.org/kernel/2.4.20/linux-2.4.20-ptrace.patch
<em class="quotelev1">> 
<em class="quotelev1">> ili da se hvanete i da si portnete na alan patch-a do sobstvenoto kernel
<em class="quotelev1">> tree, shtoto toj ne e sprqmo 2.4.20,a sprqmo neshto negovo si(kato
<em class="quotelev1">> preskochim momenta, che se opitva da patchne arch/um/neshtosi
<em class="quotelev1">> (UserModeLinux), ima i edin reject iz schedulerite nqkude ...)
<em class="quotelev1">> 
<em class="quotelev1">> p.s. Predpolagam, che problema e podoben na onzi ptrace() exploit predi
<em class="quotelev1">> izvestno vreme, kojto iziskvashe da imash nqkakvo setuid binary (kakvoto
<em class="quotelev1">> i da e), taka che _PREDPOLAGAM_ ,che kojto ne iska da restartira, mozhe
<em class="quotelev1">> prosto da ne ostavq nishto setuid po sistemata si...ama ne vi
<em class="quotelev1">> preporuchvam da mi vqrvate (za tova poslednoto) , a da se patchnete :)

Ako ne izpolzvate kmod mozhete da spite spokoino.

grep CONFIG_KMOD /usr/src/linux/.config

Ako vidite:
CONFIG_KMOD=y

Patchvaite, ako ne, spokoino mozhete da izchakate 2.4.21

<p>
-- 
Georgi Chorbadzhiyski
http://georgi.unixsol.org/
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