发布日期：2008-06-11
更新日期：2008-06-13

受影响系统：

X.org X11 R7.3

描述：

---

BUGTRAQ  ID: 29669
CVE(CAN) ID: CVE-2008-1379

Xorg X Server是多个厂商操作系统中所捆绑的X窗口系统显示服务器。

X.Org X server的MIT-SHM扩展的fbShmPutImage()函数在创建位图时存在信息泄露漏洞。位图的宽度和高度是受用户控制的，而该函数没有验证位图处于共享的内存部分边界中，允许攻击者读取X服务进程的任意内存区域。

如果将X服务器配置为监听基于TCP的客户端连接，且允许客户端通过xhosts文件创建会话，就可以远程利用这个漏洞。

<*来源：Matthieu Herrb （xorg@lists.freedesktop.org）
        regenrecht
  
  链接：http://secunia.com/advisories/30627/
        http://lists.freedesktop.org/archives/xorg/2008-June/036026.html
        http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-238686-1
        http://www.debian.org/security/2008/dsa-1595
        http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=722
        https://www.redhat.com/support/errata/RHSA-2008-0512.html
        https://www.redhat.com/support/errata/RHSA-2008-0502.html
        https://www.redhat.com/support/errata/RHSA-2008-0504.html
        https://www.redhat.com/support/errata/RHSA-2008-0503.html
        http://security.gentoo.org/glsa/glsa-200806-07.xml
*>

建议：

---

临时解决方法：

* 禁用有漏洞的扩展：

  Section "Extensions"
    Option "MIT-SHM" "disable"
  EndSection

厂商补丁：

Debian
------
Debian已经为此发布了一个安全公告（DSA-1595-1）以及相应补丁:
DSA-1595-1：New xorg-server packages fix several vulnerabilities
链接：http://www.debian.org/security/2008/dsa-1595

补丁下载：

Source archives:

http://security.debian.org/pool/updates/main/x/xorg-server/xorg-server_1.1.1.orig.tar.gz
Size/MD5 checksum:  8388609 15852049050e49f380f953d8715500b9
http://security.debian.org/pool/updates/main/x/xorg-server/xorg-server_1.1.1-21etch5.diff.gz
Size/MD5 checksum:   632764 c982d4e00ede14d7627297a457d0320b
http://security.debian.org/pool/updates/main/x/xorg-server/xorg-server_1.1.1-21etch5.dsc
Size/MD5 checksum:     2024 fc534ccff948c702a4ef0cf531deaccf

alpha architecture (DEC Alpha)

http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_alpha.deb
Size/MD5 checksum:   353656 2706862a69138ee94fcbb31211e0c4a5
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_alpha.deb
Size/MD5 checksum:  4455548 ff3a26b71c5e317258df73baa97ab7e2
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_alpha.deb
Size/MD5 checksum:  1030886 44ff2d44fcfaf0473e7bdc43180f0beb
http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_alpha.deb
Size/MD5 checksum:  1767104 79c0289e2d897f6173240887459a6bd4
http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_alpha.deb
Size/MD5 checksum:  1930704 c6ef24273a6f88b77088e2cd8cd8db1e
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_alpha.deb
Size/MD5 checksum:   140478 286561a4926171499be367df85bc7146
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_alpha.deb
Size/MD5 checksum:  1964526 22a6658d46f631e0a60c618dd4fb723d

amd64 architecture (AMD x86_64 (AMD64))

http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_amd64.deb
Size/MD5 checksum:   134018 08d9419fdbff4f1e163122fa5112e336
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_amd64.deb
Size/MD5 checksum:  1654086 37abd310608a1204a95e90878fd0e1d1
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_amd64.deb
Size/MD5 checksum:   859948 37099efb5371cb17f6689e3c90dd0038
http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_amd64.deb
Size/MD5 checksum:  1472576 c0e587f113cc6fd656587ed08959bff2
http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_amd64.deb
Size/MD5 checksum:  1622812 ccb434f8e7dc1908c61652f71a4512cd
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_amd64.deb
Size/MD5 checksum:   350956 5cf742aa111b5e006d015e85bb7afdfb
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_amd64.deb
Size/MD5 checksum:  3919134 e1befedf8342c06a50ea3dd84ac5da5f

arm architecture (ARM)

http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_arm.deb
Size/MD5 checksum:   125572 4f0f268985c0596e0f5b059459308abd
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_arm.deb
Size/MD5 checksum:  3778010 e716984d0990375c62a0d5a4a5cbabc0
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_arm.deb
Size/MD5 checksum:   352298 462cb5ee2ccfb0d220a94413b4fa0e77
http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_arm.deb
Size/MD5 checksum:  1446028 cd0fca4306ea72641d82bcf8751fc418
http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_arm.deb
Size/MD5 checksum:  1598864 db43f26ed6a6f1b3125e0af7920b3f89
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_arm.deb
Size/MD5 checksum:   854518 16a33b692e5ca981e6a7e71a15e650bb
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_arm.deb
Size/MD5 checksum:  1622894 0c2289bee8b093b0f9c3328faebcb02e

hppa architecture (HP PA RISC)

http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_hppa.deb
Size/MD5 checksum:  1822068 48fe44f3fdf125336657a8c1b019daf8
http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_hppa.deb
Size/MD5 checksum:  1662618 64d8f779fcce4a61b1556a5f13669204
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_hppa.deb
Size/MD5 checksum:  4400602 0f72c68314ef61163178688104e2cf8d
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_hppa.deb
Size/MD5 checksum:   353908 5ffc6917aff7513248e4042617197871
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_hppa.deb
Size/MD5 checksum:   910136 59828e23227be68ea9553b2cf71328e9
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_hppa.deb
Size/MD5 checksum:  1854792 9b60b9f61b0481817166b94c261c6c44
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_hppa.deb
Size/MD5 checksum:   134908 649b2e1b4d1f2349305d1a8345bc2b4a

i386 architecture (Intel ia32)

http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_i386.deb
Size/MD5 checksum:  1388494 2d75e017e06d12fef00abd3516b19aa1
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_i386.deb
Size/MD5 checksum:   808458 f243812b25df4f648a428fbe0e53f387
http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_i386.deb
Size/MD5 checksum:  1538312 cd554920bc9601c748383d64bd4072ac
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_i386.deb
Size/MD5 checksum:   121818 ed0f888cfc27db61a3e8f723b93ad1bb
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_i386.deb
Size/MD5 checksum:   345606 72c2acb632d6c86fdcd2b05759747ec8
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_i386.deb
Size/MD5 checksum:  3655134 44748e455c0430134e2b81704276ab64
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_i386.deb
Size/MD5 checksum:  1563522 a68b5bb2ded4aaeb38af7bb1d069eaa1

ia64 architecture (Intel ia64)

http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_ia64.deb
Size/MD5 checksum:  2496678 f696eadca3cc5646d5c5cfa3d45f737e
http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_ia64.deb
Size/MD5 checksum:  2448490 5e86a9c9f46fdae3d838df88a6a08f29
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_ia64.deb
Size/MD5 checksum:  5491656 0778e3c6a23cd6190f789b5b790526ed
http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_ia64.deb
Size/MD5 checksum:  2220690 6e88b371e6de346a26a5b157601e13f3
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_ia64.deb
Size/MD5 checksum:   161788 cd678648723e9cab464144dab81f7b3d
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_ia64.deb
Size/MD5 checksum:  1306936 ff26354f105c0b08424588b5dd44023a
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_ia64.deb
Size/MD5 checksum:   345528 aab6138fba10180d29e2a849aa5d1d11

mips architecture (MIPS (Big Endian))

http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_mips.deb
Size/MD5 checksum:   137652 cbaf8796e7f4db0dc869ff9607caa230
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_mips.deb
Size/MD5 checksum:  3842442 38aa5e3b6cf0ed22f0322d7acad35d10
http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_mips.deb
Size/MD5 checksum:  1682974 0a04a328ea52ac64d6d3b35b4aafc2d6
http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_mips.deb
Size/MD5 checksum:  1537288 9d0cf23ee7ef9ebb25467e1ec15659e2
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_mips.deb
Size/MD5 checksum:  1714678 a7dc64ea9d8ea2b4c88075235f2c465d
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_mips.deb
Size/MD5 checksum:   862590 dae745db6339d6b3ee874f9cf5991d7c
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_mips.deb
Size/MD5 checksum:   353814 3a0181d7c775dce97018d5457c75bf33

mipsel architecture (MIPS (Little Endian))

http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_mipsel.deb
Size/MD5 checksum:   134954 f61f2419ef8fad397243d7efc638db98
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_mipsel.deb
Size/MD5 checksum:   345558 f5ba2c73c9a1ed528b7ff1ba173f0114
http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_mipsel.deb
Size/MD5 checksum:  1528702 5d453afbb299c865d1c75daf8eb2bf64
http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_mipsel.deb
Size/MD5 checksum:  1674800 6324ac98164b8a9afa527149494ea044
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_mipsel.deb
Size/MD5 checksum:  1709264 6a837175dff2a568b8bc81007038c1eb
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_mipsel.deb
Size/MD5 checksum:  3710732 b554e87fb4100c6495853da0b09df739
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_mipsel.deb
Size/MD5 checksum:   862620 b1cf7114eda921f92e0c49a2ec081682

powerpc architecture (PowerPC)

http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_powerpc.deb
Size/MD5 checksum:   842676 0db68c7ca974d3e136f296d8651efb07
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_powerpc.deb
Size/MD5 checksum:  3983816 8a1b74966c423a5c473997a46abb55c1
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_powerpc.deb
Size/MD5 checksum:  1612710 57561a7d212cadb23fe56e4e663d3274
http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_powerpc.deb
Size/MD5 checksum:  1448654 2fba5a0781f499ffed19e04f8d0ebb21
http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_powerpc.deb
Size/MD5 checksum:  1587794 c4054528cfcc1d159769002064633724
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_powerpc.deb
Size/MD5 checksum:   345594 68d046b496080fb1bf02f874b76a47c0
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_powerpc.deb
Size/MD5 checksum:   136982 f9736a4fe2dc18a6b48e64c08012204a

s390 architecture (IBM S/390)

http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_s390.deb
Size/MD5 checksum:  4132622 f4a24c252b0c631f9f167b17ccaee281
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_s390.deb
Size/MD5 checksum:  1740820 dc93f80715edf4824e0ab9132f2cec4c
http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_s390.deb
Size/MD5 checksum:  1566750 f62c4b61e2bdc5a04c4a5365af064313
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_s390.deb
Size/MD5 checksum:   130744 b5c7f27981f36b56d6a5c640514f3ee6
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_s390.deb
Size/MD5 checksum:   345526 048f84d8a5e196fedff3c96dcecfcedd
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_s390.deb
Size/MD5 checksum:   885218 bdd1fda7f1340585fd9884ace64f12c2
http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_s390.deb
Size/MD5 checksum:  1709994 54fd0c7a4ccaf8c739d77d1b4a2af64f

sparc architecture (Sun SPARC/UltraSPARC)

http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-dev_1.1.1-21etch5_sparc.deb
Size/MD5 checksum:   346026 fa0865d3f1c20f78a8c7f8cf862a19c2
http://security.debian.org/pool/updates/main/x/xorg-server/xvfb_1.1.1-21etch5_sparc.deb
Size/MD5 checksum:  1524636 f1173aaf52f47a537cdf0d101d59118b
http://security.debian.org/pool/updates/main/x/xorg-server/xnest_1.1.1-21etch5_sparc.deb
Size/MD5 checksum:  1392106 616401ab84a3aacfc160a1778905db3e
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xephyr_1.1.1-21etch5_sparc.deb
Size/MD5 checksum:  1548902 df4d826882bc583849c18f956986f12b
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx-tools_1.1.1-21etch5_sparc.deb
Size/MD5 checksum:   120070 20a1f9d22a7c91443e24a903e34c89ae
http://security.debian.org/pool/updates/main/x/xorg-server/xdmx_1.1.1-21etch5_sparc.deb
Size/MD5 checksum:   779658 fbe53553bbb53dabb36bdaabce4dfc17
http://security.debian.org/pool/updates/main/x/xorg-server/xserver-xorg-core_1.1.1-21etch5_sparc.deb
Size/MD5 checksum:  3697696 266f42a55e01cca9a1cae85eaf35e67e

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

RedHat
------
RedHat已经为此发布了一个安全公告（RHSA-2008:0503-01）以及相应补丁:
RHSA-2008:0503-01：Important: xorg-x11 security update
链接：https://www.redhat.com/support/errata/RHSA-2008-0503.html

Sun
---
Sun已经为此发布了一个安全公告（Sun-Alert-238686）以及相应补丁:
Sun-Alert-238686：Multiple security vulnerabilities in the Solaris X Server Extensions may lead to a Denial of Service (DoS) condition or allow Execution of Arbitrary Code
链接：http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-238686-1

Gentoo
------
Gentoo已经为此发布了一个安全公告（GLSA-200806-07）以及相应补丁:
GLSA-200806-07：X.Org X server: Multiple vulnerabilities
链接：http://security.gentoo.org/glsa/glsa-200806-07.xml


所有X.org X Server用户都应升级到最新版本：

     # emerge --sync
     # emerge --ask --oneshot --verbose ">=3Dx11-base/xorg-server-1.3.0.0=-r6"

X.org
-----
目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：

ftp://ftp.freedesktop.org/pub/xorg/X11R7.3/patches/xorg-xserver-1.4-cve-2008-1379.diff

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