From: Dmitry Vodennikov <vod@elecom.ru>
To: ALT Linux sysadmin discuss <sysadmins@lists.altlinux.org>
Subject: Re: [Sysadmins] Fwd: Linux Kernel 2.6.x PRCTL Core Dump Handling - Local r00t Exploit ( BID 18874 / CVE-2006-2451 )
Date: Thu, 20 Jul 2006 03:11:37 -0700
Message-ID: <44BF56D9.2030809@elecom.ru> (raw)
In-Reply-To: <20060713095034.GA23205@immo.ru>
Alexey I. Froloff пишет:
> * Michael Shigorin <mike@> [060713 13:45]:
>> Напоминаю тем, у кого linux-2.6 на серверах, что в 2.6.13 до
>> 2.6.17.4 или 2.6.16.24 может быть незаткнут local root и
>> эксплойт уже опубликован.
>
>> chdir("/etc/cron.d");
> Вот тут оно благополучно хватает -EPERM и отваливаеццо.
Видимо у кого как. У меня на compact шелл получается (при условии
умолчательных опций монтирования /tmp), по почему-то не рутовый.
---------------------------------------------------
[vod@rs tmp]$ ./rs_prctl_kernel
Linux Kernel 2.6.x PRCTL Core Dump Handling - Local r00t
By: dreyer & RoMaNSoFt
[ 10.Jul.2006 ]
[*] Creating Cron entry
[*] Sleeping for aprox. one minute (** please wait **)
[*] Running shell (remember to remove /tmp/sh when finished) ...
sh-2.05b$ id
uid=500(vod) gid=500(vod)
groups=10(wheel),19(proc),22(cdrom),36(camera),37(scanner),71(floppy),80(cdwriter),81(audio),83(radio),106(xgrp),500(vod)
sh-2.05b$ less /var/log/messages
/var/log/messages: Permission denied
sh-2.05b$ uname -r
2.6.12-vs26-smp-alt10
sh-2.05b$ ls -ld /etc/cron*
drwxr-x--- 2 root root 4096 Jul 20 15:53 /etc/cron.d
drwxr-x--- 2 root root 4096 Jul 11 14:45 /etc/cron.daily
-rw-r----- 1 root crontab 0 Dec 19 2004 /etc/cron.deny
drwxr-x--- 2 root root 4096 Jul 11 05:31 /etc/cron.hourly
drwxr-x--- 2 root root 4096 Jul 11 02:51 /etc/cron.monthly
drwxr-x--- 2 root root 4096 Jul 11 14:44 /etc/cron.weekly
-rw------- 1 root root 184 Apr 25 2003 /etc/crontab
-rw-r--r-- 1 root root 167 Apr 26 2003 /etc/crontab.template
---------------------------------------------------
prev parent reply other threads:[~2006-07-20 10:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-13 9:44 Michael Shigorin
2006-07-13 9:50 ` Alexey I. Froloff
2006-07-13 10:48 ` Dmitry V. Levin
2006-07-13 21:01 ` Michael Shigorin
2006-07-13 21:12 ` Dmitry V. Levin
2006-07-13 21:27 ` Michael Shigorin
2006-07-13 21:53 ` Sergey V Kovalyov
2006-07-13 21:57 ` Sergey V Kovalyov
2006-07-14 5:55 ` Alexey I. Froloff
2006-07-13 11:03 ` Vadim Gusev
2006-07-20 10:11 ` Dmitry Vodennikov [this message]
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