发布日期：2003-01-03
更新日期：2003-01-08

受影响系统：

SGI FAM
    - Debian Linux 3.0
    - SGI IRIX 6.5.9m
    - SGI IRIX 6.5.9f
    - SGI IRIX 6.5.9
    - SGI IRIX 6.5.8m
    - SGI IRIX 6.5.8f
    - SGI IRIX 6.5.8
    - SGI IRIX 6.5.7m
    - SGI IRIX 6.5.7f
    - SGI IRIX 6.5.7
    - SGI IRIX 6.5.6m
    - SGI IRIX 6.5.6f
    - SGI IRIX 6.5.6
    - SGI IRIX 6.5.5m
    - SGI IRIX 6.5.5f
    - SGI IRIX 6.5.5
    - SGI IRIX 6.5.4m
    - SGI IRIX 6.5.4f
    - SGI IRIX 6.5.4
    - SGI IRIX 6.5.3m
    - SGI IRIX 6.5.3f
    - SGI IRIX 6.5.3
    - SGI IRIX 6.5.2m
    - SGI IRIX 6.5.2f
    - SGI IRIX 6.5.2
    - SGI IRIX 6.5.10m
    - SGI IRIX 6.5.10f
    - SGI IRIX 6.5.10
    - SGI IRIX 6.5.1
    - SGI IRIX 6.5

不受影响系统：

SGI FAM
    - SGI IRIX 6.5.18
SGI FAM
    - SGI IRIX 6.5.17 m
SGI FAM
    - SGI IRIX 6.5.17
SGI FAM
    - SGI IRIX 6.5.16
SGI FAM
    - SGI IRIX 6.5.15m
SGI FAM
    - SGI IRIX 6.5.15f
SGI FAM
    - SGI IRIX 6.5.15
SGI FAM
    - SGI IRIX 6.5.14m
SGI FAM
    - SGI IRIX 6.5.14f
SGI FAM
    - SGI IRIX 6.5.14
SGI FAM
    - SGI IRIX 6.5.13m
SGI FAM
    - SGI IRIX 6.5.13f
SGI FAM
    - SGI IRIX 6.5.13
SGI FAM
    - SGI IRIX 6.5.12m
SGI FAM
    - SGI IRIX 6.5.12f
SGI FAM
    - SGI IRIX 6.5.12
SGI FAM
    - SGI IRIX 6.5.11m
SGI FAM
    - SGI IRIX 6.5.11f
SGI FAM
    - SGI IRIX 6.5.11

描述：

---

BUGTRAQ  ID: 5487
CVE(CAN) ID: CVE-2002-0875

fam是一款由SGI开发和维护的开放源代码文件更改监视工具，也可以使用在其他Linux和Unix操作系统下。

fam存在设计错误，本地攻击者可以利用这个漏洞获得高权限属主目录下的敏感文件名。

当执行FAM对某一个目录进行监视时，对于只属于组成员的用户来说，本应该只会返回Exists和EndExist事件，如：

# ls -ld /root
drwxr-x--- ... root root ... /root
# fam

% ./test -d /root
FAMMonitorDirectory("/root")
FAMMonitorDirectory("/root")
DIR  /root:   /root Exists
DIR  /root:   /root EndExist

但是，由于设计错误，执行FAM的时候会返回如下信息：

% ./test -d /root
FAMMonitorDirectory("/root")
FAMMonitorDirectory("/root")
DIR  /root:   /root Exists
DIR  /root:   .gnome Exists
DIR  /root:   Desktop Exists
...

导致泄露高权限目录中的敏感文件名。

<*来源：Michael Wardle （michael.wardle@adacel.com）
  
  链接：ftp://patches.sgi.com/support/free/security/advisories/20000301-03-I
        ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SN-02:05.asc
        http://www.debian.org/security/2002/dsa-154
*>

建议：

---

厂商补丁：

Debian
------
Debian已经为此发布了一个安全公告（DSA-154-1）以及相应补丁:
DSA-154-1：New fam packages fix privilege escalation
链接：http://www.debian.org/security/2002/dsa-154

补丁下载：

Source archives:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2.dsc
Size/MD5 checksum:      582 c85dc0471332fee4a8c479a4da7f8c3c
http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2.diff.gz
Size/MD5 checksum:     7630 47737eb840520df5d7c1424866627ff7
http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1.orig.tar.gz
Size/MD5 checksum:   289005 fb1e2a2c01a2a568c2c0f67fa9b90e41

Alpha architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_alpha.deb
Size/MD5 checksum:    79350 3b81338188807cb5bca93b1ec6fb57cc
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_alpha.deb
Size/MD5 checksum:    33064 60940e8809a4bb24c66a3de71acbbcab
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_alpha.deb
Size/MD5 checksum:    36188 bfa26a28c9841cb7f27f359bc4f5db1d

ARM architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_arm.deb
Size/MD5 checksum:    60328 6407969c77d75c542d588ddbe0894326
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_arm.deb
Size/MD5 checksum:    29980 1cc6627f802ab8404d48ef2e909f45c8
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_arm.deb
Size/MD5 checksum:    27844 295f117c1f04a5026a9d1063e5d3ba30

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_i386.deb
Size/MD5 checksum:    59410 ad9b2cb638c5a8c6516ca7762543c418
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_i386.deb
Size/MD5 checksum:    29398 e38857597943d466c5e897dc780a4755
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_i386.deb
Size/MD5 checksum:    32352 caa455f94ae2762987ae7787fc5dde46

Intel IA-64 architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_ia64.deb
Size/MD5 checksum:    88934 4391dd719917f6daccfa531523e50cd0
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_ia64.deb
Size/MD5 checksum:    35612 67210b45b17bd2b8b1e3a0f8637fb0df
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_ia64.deb
Size/MD5 checksum:    45790 a98b08fe026f84fb91f8bff9664538e0

HP Precision architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_hppa.deb
Size/MD5 checksum:    70668 a6471f295233dab67161c7a0dd64d33f
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_hppa.deb
Size/MD5 checksum:    32162 382fe3ba40ded1397b710d4bf777e0d9
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_hppa.deb
Size/MD5 checksum:    33464 057620d63f5a8d384e33bb38ba91e6e2

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_m68k.deb
Size/MD5 checksum:    57592 6b37b2878101173347e17f374e84f721
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_m68k.deb
Size/MD5 checksum:    29124 2c1dfc0ec88e3f07fa701ca69aaa44bc
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_m68k.deb
Size/MD5 checksum:    32912 b9936e5818e30388b16531a81ba2ff07

Big endian MIPS architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_mips.deb
Size/MD5 checksum:    74602 6df218b9cf0d02ac80b14e804577398a
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_mips.deb
Size/MD5 checksum:    31370 b4de3a6b76911da3444ca6639989c38e
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_mips.deb
Size/MD5 checksum:    31894 fd8cce0df31ed5e90c8e7414f0c0fcd9

Little endian MIPS architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_mipsel.deb
Size/MD5 checksum:    73924 17385ca599e2c96bf29b3ad629462d12
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_mipsel.deb
Size/MD5 checksum:    31458 6ded23d5b78f63ae2464cfd2186daec0
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_mipsel.deb
Size/MD5 checksum:    31724 c195749053e15ce4c58083e8bb19045a

PowerPC architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_powerpc.deb
Size/MD5 checksum:    58322 2d6c9f5656603d038927a58f8471fd4f
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_powerpc.deb
Size/MD5 checksum:    29892 6352ac12a99d6b96b08c0aa6230165df
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_powerpc.deb
Size/MD5 checksum:    33190 cb5b5e3abf22f06b96449c20ba910732

IBM S/390 architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_s390.deb
Size/MD5 checksum:    57232 6c739fb150162d7ecf6d5c6d1d1162a6
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_s390.deb
Size/MD5 checksum:    28484 5b72634dafe0c01dd299eb429464d698
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_s390.deb
Size/MD5 checksum:    32238 bfc10afb0c1319045ee8da9ddd73d231

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/f/fam/fam_2.6.6.1-5.2_sparc.deb
Size/MD5 checksum:    56796 f6e96ed2f69da1320b3a29ccea07ac9b
http://security.debian.org/pool/updates/main/f/fam/libfam-dev_2.6.6.1-5.2_sparc.deb
Size/MD5 checksum:    28808 3973d1c70bf91f4bc0a0665ef1dd5f83
http://security.debian.org/pool/updates/main/f/fam/libfam0_2.6.6.1-5.2_sparc.deb
Size/MD5 checksum:    30868 612c31405105f6ddfafdaf7a46ba8215

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

FreeBSD
-------
FreeBSD已经为此发布了一个安全公告（FreeBSD-SN-02:05）以及相应补丁:
FreeBSD-SN-02:05：security issues in ports
链接：ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SN-02:05.asc

建立FreeBSD系统用户升级相关PORT。

SGI
---
SGI已经为此发布了一个安全公告（20000301-03-I）以及相应补丁:
20000301-03-I：fam Vulnerability Update
链接：ftp://patches.sgi.com/support/free/security/advisories/20000301-03-I

建议用户升级系统至IRIX 6.5.11及之后版本。

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