AIX login登录参数处理漏洞

漏洞信息详情

AIX login登录参数处理漏洞

• CNNVD编号：CNNVD-199405-004
• 危害等级： 超危
  
  
• CVE编号：
  CVE-1999-0113
  
• 漏洞类型：
  
  

• 发布时间：
  
  1994-05-23
  
• 威胁类型：
  
  
  远程
  
• 更新时间：
  
  2012-11-28
  
• 厂        商：
  
  ibm
• 漏洞来源：
  Linux Usenet Admin…

rlogin的一些实现中存在漏洞。攻击者利用该漏洞用‘-froot’参数，根权限访问。

临时解决方法：

如果您不能立刻安装补丁或者升级，CNNVD建议您采取以下措施以降低威胁：

* H Morrow Long <long-morrow@cs.yale.edu>提供如下脚本解决这个问题：

#!/bin/sh

#

# H. Morrow Long, Yale CSCF

#

# Version “tsm-3.2.0”.

AIX_VERSION=”tsm-3.2.0″

#

# Patch path directory /cs/local/src/AIX/rlogin/

AIX_PATCH_DIR=”/cs/local/src/AIX/rlogin”

AIX_TSM_PATCH=”$AIX_PATCH_DIR/$AIX_VERSION”

# Root should NOT be allowed to rlogin as user ROOT anyway! DISABLE root rlogin

#

chuser rlogin=’false’ root

#

#

# 1. As root, edit /etc/inetd.conf

# Comment out the line ‘login … rlogin’

sed ‘s/^login/# login/’ /etc/inetd.conf > /tmp/inetd.conf.NEW

cp -p /etc/inetd.conf /etc/inetd.conf.BACKUP

cp /tmp/inetd.conf.NEW /etc/inetd.conf

# 2. Run ‘inetimp’

inetimp

# 3. Run ‘refresh -s inetd’

refresh -s inetd

#

#

#

# APAR IX44254 — rlogin security hole

#

# This document describes how to apply the emergency patch for APAR

# IX44254. This emergency patch is not the permanent solution to this

# problem, it merely provides a means to restore rlogin functionality

# in a more secure manner.

#

# Begin by identifying the correct level for your system. The command

# “oslevel” may be used for this purpose on AIX v3.2 systems. For AIX

# v3.1 systems you must know the last maintenance level which was

# applied.

#

# If the “oslevel” command returns “oslevel: not found” or a similar

# message from the shell, you must use “tsm-3.2.0”.

#

# If the “oslevel” command returns “<3240” or “<>3240”, you must use

# “tsm-3.2.0”.

#

# If the “oslevel” command returns “=3240”, “>3240”, “<3250” or “<>3250”,

# you must use “tsm-3.2.4”.

#

# If the “oslevel” command returns “=3250” or “>3250”, you must use

# “tsm-3.2.5”.

#

#

# Once you have determined the correct version, execute the following

# steps.

#

# 1). “cd /usr/sbin”

cd /usr/sbin

# 2). If the file “tsm.ix44254” does not exist, execute “mv tsm tsm.ix44254”

mv tsm tsm.ix44254

# 3). “cp tsm” where “” was figured out above.

# “tsm-3.2.0”.

# cp /cs/local/src/AIX/rlogin/tsm-3.2.0 ./tsm

cp “${AIX_TSM_PATCH}” ./tsm

# 3). “rm -f login getty”

rm -f login getty

# 4). “chown root.security tsm”

chown root.security tsm

# 5). “chmod 4554 tsm”

chmod 4554 tsm

# 6). “ln tsm login”

ln tsm login

# 7). “ln tsm getty”

ln tsm getty

# 8). “chmod a-x tsm.ix44254”

chmod a-x tsm.ix44254

#

cp -p /etc/inetd.conf.BACKUP /etc/inetd.conf

# 2. Run ‘inetimp’

inetimp

# 3. Run ‘refresh -s inetd’

refresh -s inetd

#

#

# You may verify that the new login command is working correctly with the

# command

#

# rlogin localhost

rlogin localhost

厂商补丁：

IBM

—

IBM AIX 4.1及以上版本已经不存在这个漏洞，请联系厂商：

http://www.ers.ibm.com/” target=”_blank”>

http://www.ers.ibm.com/

来源: BID

名称: 458

链接:http://www.securityfocus.com/bid/458