发布日期：2002-10-21
更新日期：2002-10-25

受影响系统：

Debian YPServ
    - Debian Linux 3.0 i386
    - Debian Linux 3.0 sparc
    - Debian Linux 3.0 alpha
    - Debian Linux 3.0 IA-32
    - Debian Linux 3.0 arm
    - Debian Linux 3.0 powerpc
    - Debian Linux 3.0 68k
    - Debian Linux 2.3 alpha
    - Debian Linux 2.3 IA-32
    - Debian Linux 2.3
    - Debian Linux 2.3 arm
    - Debian Linux 2.3 powerpc
    - Debian Linux 2.3 68k
    - Debian Linux 2.3 i386
    - Debian Linux 2.3 sparc

描述：

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BUGTRAQ  ID: 6016
CVE(CAN) ID: CVE-2002-1232

ypserv是标准NIS/YP网络协议的一个实现。允许主机名，用户名和其他信息分布于网络各端。

ypserv 2.5之前的版本对恶意NIS请求处理不正确，远程攻击者可以利用这个漏洞获得网络敏感信息。

Thorsten Kukuck发现ypserv程序存在一个内存泄露问题。当恶意用户提交不存在的映射请求，服务程序会泄露部分旧的域名和映射名信息。

<*链接：http://www.debian.org/security/2002/dsa-180
*>

建议：

---

厂商补丁：

Debian
------
Debian已经为此发布了一个安全公告（DSA-180-1）以及相应补丁:
DSA-180-1：New NIS packages fix information leak
链接：http://www.debian.org/security/2002/dsa-180

补丁下载：

Source archives:

http://security.debian.org/pool/updates/main/n/nis/nis_3.8-2.1.dsc
Size/MD5 checksum:      549 0648773dc9405dfc7db374119fdfff29
http://security.debian.org/pool/updates/main/n/nis/nis_3.8-2.1.diff.gz
Size/MD5 checksum:    20525 0a95b9ded7ff489c1286063d6072d457
http://security.debian.org/pool/updates/main/n/nis/nis_3.8.orig.tar.gz
Size/MD5 checksum:   497044 69bd8aa6b24cb22266cdc04354d3e287

Alpha architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.8-2.1_alpha.deb
Size/MD5 checksum:   243476 2e4e1daacb4d89b0447eaacd2ba524eb

ARM architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.8-2.1_arm.deb
Size/MD5 checksum:   179622 68949d909772b5dd84a8b81090bd51bd

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.8-2.1_i386.deb
Size/MD5 checksum:   165064 bae6f9b96c61c2dea0f23acb96795e3a

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.8-2.1_m68k.deb
Size/MD5 checksum:   158486 5601d33852631af0e5d742724cdc21fe

PowerPC architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.8-2.1_powerpc.deb
Size/MD5 checksum:   169010 9ff45f7490b1832dea2a48ef4549c707

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.8-2.1_sparc.deb
Size/MD5 checksum:   182990 07989d24beb219f9c5dc881b2e7439e2


Debian GNU/Linux 3.0 alias woody
--------------------------------

Source archives:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1.dsc
Size/MD5 checksum:      583 39867a9d09bec5430a09c1a797af267c
http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1.diff.gz
Size/MD5 checksum:    39172 5ffbfd98d5a2b795842800723c987e67
http://security.debian.org/pool/updates/main/n/nis/nis_3.9.orig.tar.gz
Size/MD5 checksum:   495695 b4d1c45619d8e3b20ef4b6032911a78c

Alpha architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_alpha.deb
Size/MD5 checksum:   203838 c1d79fbf7a7bc9b95ae6ea3c0355ba0e

ARM architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_arm.deb
Size/MD5 checksum:   165466 c73c0ea67dcf72d802164fadb52ed1f4

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_i386.deb
Size/MD5 checksum:   166214 e0b4d5496ea0063c2a2ab184d0ca8688

Intel IA-64 architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_ia64.deb
Size/MD5 checksum:   236278 2573ec9f729f55634392d80c7ca7fdcf

HP Precision architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_hppa.deb
Size/MD5 checksum:   182482 b23d0bb92aee63825c186068c6971c17

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_m68k.deb
Size/MD5 checksum:   160114 70f5226204ebc3dadf9baacc3f7ea084

Big endian MIPS architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_mips.deb
Size/MD5 checksum:   176766 27275782bbb48e3ea8f230d5b7a55974

Little endian MIPS architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_mipsel.deb
Size/MD5 checksum:   176782 d1b102f9a84b0213c89a8d0f7e63bf60

PowerPC architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_powerpc.deb
Size/MD5 checksum:   168290 9f615b8886db258eba3d62c2462095de

IBM S/390 architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_s390.deb
Size/MD5 checksum:   166598 32c8445c48db60c7e86cf102b27189f2

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/n/nis/nis_3.9-6.1_sparc.deb
Size/MD5 checksum:   179352 8b38cd4b37a31316457312c7fac6b1ce

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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