发布日期：2008-11-14
更新日期：2008-11-21

受影响系统：

Enlightenment Imlib2 1.4.2

描述：

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BUGTRAQ  ID: 32371
CVE(CAN) ID: CVE-2008-5187

IMlib2是一个通用的图形加载和渲染库。

IMlib2库的XPM加载器所提供的load()函数中存在指针算术错误，如果使用IMlib2库的应用程序加载了恶意的XPM文件的话，就可能触发堆溢出，导致执行任意指令。

<*来源：Julien Danjou （acid@debian.org）
  
  链接：http://secunia.com/advisories/32796/
        http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=505714
        http://www.debian.org/security/2008/dsa-1672
        http://security.gentoo.org/glsa/glsa-200812-23.xml
*>

测试方法：

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警 告

以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！

http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=atlantikdesigner.xpm;att=1;bug=505714

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-1672-1）以及相应补丁:
DSA-1672-1：New imlib2 packages fix arbitrary code execution
链接：http://www.debian.org/security/2008/dsa-1672

补丁下载：
Source archives:

http://security.debian.org/pool/updates/main/i/imlib2/imlib2_1.3.0.0debian1.orig.tar.gz
Size/MD5 checksum:   617750 7f389463afdb09310fa61e5036714bb3
http://security.debian.org/pool/updates/main/i/imlib2/imlib2_1.3.0.0debian1-4+etch2.dsc
Size/MD5 checksum:      775 3a483642e5e60fd6f912af749817f456
http://security.debian.org/pool/updates/main/i/imlib2/imlib2_1.3.0.0debian1-4+etch2.diff.gz
Size/MD5 checksum:    12968 5394cd31ea21566fef7a6782ff2548a5

alpha architecture (DEC Alpha)

http://security.debian.org/pool/updates/main/i/imlib2/libimlib2-dev_1.3.0.0debian1-4+etch2_alpha.deb
Size/MD5 checksum:   437474 56f6242321a6cef8d4056334b59f54db
http://security.debian.org/pool/updates/main/i/imlib2/libimlib2_1.3.0.0debian1-4+etch2_alpha.deb
Size/MD5 checksum:   240248 bddc58ba8ad890c50d7cdb1dd827898b

amd64 architecture (AMD x86_64 (AMD64))

http://security.debian.org/pool/updates/main/i/imlib2/libimlib2-dev_1.3.0.0debian1-4+etch2_amd64.deb
Size/MD5 checksum:   360324 28957ea6f1202e702daa04f66a13e66b
http://security.debian.org/pool/updates/main/i/imlib2/libimlib2_1.3.0.0debian1-4+etch2_amd64.deb
Size/MD5 checksum:   212104 acff68d323a86eb0a09d8a34fa607c4f

hppa architecture (HP PA RISC)

http://security.debian.org/pool/updates/main/i/imlib2/libimlib2-dev_1.3.0.0debian1-4+etch2_hppa.deb
Size/MD5 checksum:   386144 1439604854f5dcf30bcc73abf58a9412
http://security.debian.org/pool/updates/main/i/imlib2/libimlib2_1.3.0.0debian1-4+etch2_hppa.deb
Size/MD5 checksum:   227728 7c1ffa030aad3ee783378f20da6b76f3

i386 architecture (Intel ia32)

http://security.debian.org/pool/updates/main/i/imlib2/libimlib2-dev_1.3.0.0debian1-4+etch2_i386.deb
Size/MD5 checksum:   335616 729f2498ddf0a28d69344b039aa7bf41
http://security.debian.org/pool/updates/main/i/imlib2/libimlib2_1.3.0.0debian1-4+etch2_i386.deb
Size/MD5 checksum:   205896 e0d9f18bd5c2e3cfdcc27be6b6b2dfed

ia64 architecture (Intel ia64)

http://security.debian.org/pool/updates/main/i/imlib2/libimlib2_1.3.0.0debian1-4+etch2_ia64.deb
Size/MD5 checksum:   295004 79fd04a7fd23309b68a1e9cb01bc53b4
http://security.debian.org/pool/updates/main/i/imlib2/libimlib2-dev_1.3.0.0debian1-4+etch2_ia64.deb
Size/MD5 checksum:   462724 ece752dbd71f36cab1acc3bcf6323cd5

mips architecture (MIPS (Big Endian))

http://security.debian.org/pool/updates/main/i/imlib2/libimlib2_1.3.0.0debian1-4+etch2_mips.deb
Size/MD5 checksum:   207294 9a5e59530d7d8cd78eaba0a2fe5f5b03
http://security.debian.org/pool/updates/main/i/imlib2/libimlib2-dev_1.3.0.0debian1-4+etch2_mips.deb
Size/MD5 checksum:   370468 732ba92fef6b086a385dae15d39ae3b0

mipsel architecture (MIPS (Little Endian))

http://security.debian.org/pool/updates/main/i/imlib2/libimlib2_1.3.0.0debian1-4+etch2_mipsel.deb
Size/MD5 checksum:   207960 00d25bb5fe67159ef4a3853a8448dbf8
http://security.debian.org/pool/updates/main/i/imlib2/libimlib2-dev_1.3.0.0debian1-4+etch2_mipsel.deb
Size/MD5 checksum:   369292 88cf205cd158e623fded50f65a4be8a0

powerpc architecture (PowerPC)

http://security.debian.org/pool/updates/main/i/imlib2/libimlib2_1.3.0.0debian1-4+etch2_powerpc.deb
Size/MD5 checksum:   218918 a77ca2842bae4cc9a810121eb5975825
http://security.debian.org/pool/updates/main/i/imlib2/libimlib2-dev_1.3.0.0debian1-4+etch2_powerpc.deb
Size/MD5 checksum:   359876 239b8ca33d380a7f4f9deed47728f50f

s390 architecture (IBM S/390)

http://security.debian.org/pool/updates/main/i/imlib2/libimlib2_1.3.0.0debian1-4+etch2_s390.deb
Size/MD5 checksum:   216192 63f335de53e2ca897eab47c487e0cd4b
http://security.debian.org/pool/updates/main/i/imlib2/libimlib2-dev_1.3.0.0debian1-4+etch2_s390.deb
Size/MD5 checksum:   369042 fee16daa277b04eb95df2c73039e637e

sparc architecture (Sun SPARC/UltraSPARC)

http://security.debian.org/pool/updates/main/i/imlib2/libimlib2_1.3.0.0debian1-4+etch2_sparc.deb
Size/MD5 checksum:   197844 285364fb7d88c0be4bf7a63358e29a9f
http://security.debian.org/pool/updates/main/i/imlib2/libimlib2-dev_1.3.0.0debian1-4+etch2_sparc.deb
Size/MD5 checksum:   336396 cb7f957c2f8442d6ac0b48c07c98df89

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

Gentoo
------
Gentoo已经为此发布了一个安全公告（GLSA-200812-23）以及相应补丁:
GLSA-200812-23：Imlib2: User-assisted execution of arbitrary code
链接：http://security.gentoo.org/glsa/glsa-200812-23.xml

所有Imlib2用户都应升级到最新版本：

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=3Dmedia-libs/imlib2-1.4.2-r1"=

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