发布日期：2005-07-12
更新日期：2005-07-12

受影响系统：

Phystech dhcpcd 1.3.22-pl4
    - Debian Linux 3.1

描述：

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BUGTRAQ  ID: 14206
CVE(CAN) ID: CVE-2005-1848

dhcpcd是一款RFC2131和RFC1541兼容DHCP客户端守护程序，用于自动配置IPv4网络。

dhcpcd中存在远程拒绝服务漏洞，起因是在处理畸形数据时的跨界内存访问。

目前更多信息不详。

<*来源：infamous42md
  
  链接：http://www.debian.org/security/2005/dsa-750
*>

建议：

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厂商补丁：

Debian
------
Debian已经为此发布了一个安全公告（DSA-750-1）以及相应补丁:
DSA-750-1：New dhcpcd packages fix denial of service
链接：http://www.debian.org/security/2005/dsa-750

补丁下载：

Source archives:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1.dsc
Size/MD5 checksum:      592 b6f08de07c771dfa88ee4c2da213c8ef
http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1.diff.gz
Size/MD5 checksum:    44718 bde490fd50bea65991eff869db8cb947
http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4.orig.tar.gz
Size/MD5 checksum:   148273 59669a4110a2061f05c1c6fa6171bed2

Alpha architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_alpha.deb
Size/MD5 checksum:    70610 6bd6b7a893cee910bdb9cc146382f042

ARM architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_arm.deb
Size/MD5 checksum:    61322 066e0c5510629d03a56261c60e3ffeda

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_i386.deb
Size/MD5 checksum:    57394 1b376dc7cc9db55598fa231e848576e0

Intel IA-64 architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_ia64.deb
Size/MD5 checksum:    78624 31cc80567333e8538ec516cdb3986e1d

HP Precision architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_hppa.deb
Size/MD5 checksum:    64312 f3558fc2bfdc41d27596f5c02aab4765

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_m68k.deb
Size/MD5 checksum:    55526 36c9b163754358f111d340b150d46f7a

Big endian MIPS architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_mips.deb
Size/MD5 checksum:    62664 e624f951d018d069ef84757985f4c33e

Little endian MIPS architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_mipsel.deb
Size/MD5 checksum:    62868 0c20a5f40098c62423c21ec50bb054de

PowerPC architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_powerpc.deb
Size/MD5 checksum:    59848 f2763a581130fec32fe15f37aabe0168

IBM S/390 architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_s390.deb
Size/MD5 checksum:    59668 1549b23d2e50886cbaa5848961c64745

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/d/dhcpcd/dhcpcd_1.3.22pl4-21sarge1_sparc.deb
Size/MD5 checksum:    61234 ff9565a968d5d57f8ece62fcadfeeca7

补丁安装方法：

1. 手工安装补丁包：

  首先，使用下面的命令来下载补丁软件：
  # wget url  (url是补丁下载链接地址)

  然后，使用下面的命令来安装补丁：  
  # dpkg -i file.deb (file是相应的补丁名)

2. 使用apt-get自动安装补丁包：

   首先，使用下面的命令更新内部数据库：
   # apt-get update
  
   然后，使用下面的命令安装更新软件包：
   # apt-get upgrade

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