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OpenOffice WMF/EMF文件处理堆溢出漏洞
OpenOffice WMF/EMF文件处理堆溢出漏洞
［作者：佚名 转贴自：
服安网
点击数： 更新时间：2007-1-16 文章录入：
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OpenOffice WMF/EMF文件处理堆溢出漏洞
更新日期：2007-01-16
受影响系统： Sun StarOffice 8.0
Sun StarOffice 7.0
Sun StarOffice 6.0
OpenOffice OpenOffice 2.1描述： CVE(CAN) ID: CVE-2006-5870
OpenOffice是个整合性的软件，包含了许多文字处理、表格、公式等办公工具。
OpenOffice在处理META_ESCAPE记录时存在截尾错误。在svtools\source\filter.vcl\wmf\winwmf.cxx文件中：
case W_META_ESCAPE :
...
sal_uInt32 i, nStringLen, nDXCount;
...
aMemoryStream >> aPt.X()
>> aPt.Y()
>> nStringLen;
sal_Unicode* pBuf = aString.AllocBuffer( (sal_uInt16)nStringLen );
for ( i = 0; i < nStringLen; i++ )
aMemoryStream >> pBuf[ i ];
nStringLen为sal_uInt32，被放到了sal_uInt16进行分配然后将最初的32位值用作了计数填充缓冲区，因此任何大于 0xFFFF的长度都可能导致堆溢出。如果用户受骗打开了恶意的WMF文件或嵌入了该文件的文档（如Microsoft Word文档）的话，就可能导致通过覆盖函数指针或DWORD执行任意代码。
OpenOffice在处理EMR_POLYPOLYGON和EMR_POLYPOLYGON16记录时还存在整数溢出。在svtools\source\filter.vcl\wmf\enhwmf.cxx文件中：
case EMR_POLYPOLYGON :
INT32 i, nPoly, nGesPoints;
...
*pWMF >> nPoly >> nGesPoints;
...
pPtAry = (Point*) new char[ nGesPoints * sizeof(Point) ];
for ( i = 0; i < nGesPoints; i++ )
{
*pWMF >> nX32 >> nY32;
pPtAry[ i ] = Point( nX32, nY32 );
}
如果nGesPoints > (0x100000000/sizeof(Point))的话，nGesPoints * sizeof(Point)就会导致整数环绕。EMR_POLYPOLYGON16记录的情况与上述例子类似。远程攻击者可以通过诱骗用户打开恶意的 WMF/EMF文件触发堆溢出，导致执行任意代码。
<*来源：OpenOffice.org
John Heasman （nisr@nextgenss.com）
链接：
http://secunia.com/advisories/23612/
http://marc.theaimsgroup.com/?l=bugtraq&m=116795081318750&w=2
http://www.kb.cert.org/vuls/id/220288
http://security.gentoo.org/glsa/glsa-200701-07.xml
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102735-1
http://lwn.net/Alerts/216323/?format=printable
http://www.debian.org/security/2005/dsa-1246
*>
建议： 厂商补丁：
Debian
------
Debian已经为此发布了一个安全公告（DSA-1246-1）以及相应补丁:
DSA-1246-1：New OpenOffice.org packages fix arbitrary code execution
链接：
http://www.debian.org/security/2005/dsa-1246
补丁下载：
Source archives:
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org_1.1.3-9sarge4.dsc
Size/MD5 checksum: 2878 3adfe8b09c20248767fe9d995b3f184c
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org_1.1.3-9sarge4.diff.gz
Size/MD5 checksum: 4623655 108120f3b365317fa9c47b25a5445fce
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org_1.1.3.orig.tar.gz
Size/MD5 checksum: 166568714 5250574bad9906b38ce032d04b765772
Architecture independent components:
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-af_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2647376 8704f95d7e844e302abcae4d403f7818
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-ar_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2694806 89cc4671d9d38ff05e5a361a06e02098
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-ca_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2690164 45db102838292106429d06f2c9d4a77f
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-cs_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3586142 03e0e6ba4d7abc4954fb7ffe4e04ced6
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-cy_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2662654 ff77cf34ec2cfc0d8deaa49edf5ed00f
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-da_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3581922 7f69ac15b11613a649a2a08ff1501fd8
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-de_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3453208 fcd76abbb9df7cd707e36903e9db1f17
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-el_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2741468 ab08c03a0f0d78c3db9c99bd80fe12f1
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-en_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3525792 12c71a26f9512295ab442fb63e8711a3
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-es_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3560792 9965231fb1b0c3956ddb09255b91c86b
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-et_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2645014 baa0a0c809a740273d8dfd87b946d81b
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-eu_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2667748 740c781dd55cad46fdc52c1926d5854e
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-fi_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2673164 f8b2c8d335490dcaaf3f1bcb63eb72ec
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-fr_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3494058 674365c474453cf6590a82c2b2d3d631
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-gl_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2657584 7ce93bcb8f34a3f05f7560b5631a5ed8
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-he_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2659220 0eb0857819464be35dd9d7c81beaa0b5
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-hi_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2695686 3ca8a13e1d82d3036a92606bdce79b16
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-hu_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2771502 836d91201b70e5747a8099f5a5517deb
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-it_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3555644 3f3f0518c84cc9a7e191c6e025c67dcd
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-ja_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3564244 80fc0de1fc7d84360091e53bdca22853
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-kn_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2685084 7c5fb3784626924e0c0ce5149191c5f7
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-ko_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3540114 4c9bed5f7bcea97d3ab3b117640c626d
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-lt_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2672762 3778280d7eca49a1fbcd401750530fcc
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-nb_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2663808 d69aa15d7e5ecece8ee1fef8efde0341
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-nl_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3559972 5f2d3ecab6bb697e66ee82b4e31d7bc0
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-nn_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2663552 2c1645edd72ca4ee2b6721848b3b360e
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-ns_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2664676 5d3d924327b847377da15e74dbf70877
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-pl_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3238860 fcbda1d9de3fc009fa663319b91e2a3a
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-pt-br_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3526050 966acfd1ae82a776bdb4f23108600225
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-pt_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3161406 d4d4fd2f3e77c5586e30f2f875dc33c3
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-ru_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3332148 55aca35c906a10915e053988b7aa3c09
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-sk_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3603192 2788a27445e52e81917364aba2a85c0a
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-sl_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3599238 29ba9e01fb897c1287af13a4c478aeda
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-sv_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3542822 665126a7f85234beb95d648e20534027
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-th_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2689084 ac5b2a0123d8631a182a7de77e63ccf9
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-tn_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2650990 be8c4d81ccad1cc9951395fdf7ff078b
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-tr_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2893818 488f3310417ade7cff1b013f7e0d5e82
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-zh-cn_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3553030 9cd6554701566bc264cc479452b0dcd4
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-zh-tw_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3548654 e7992921765ffc14f8d212799addb02f
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-l10n-zu_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 2672242 635031d8e6cc4b7c16f3eefad4edb05f
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-mimelnk_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 67184 e44a08734ab212bdbc017f9675dff986
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-thesaurus-en-us_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 3130960 d659b041a6f58679cf05a67de068b6f3
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 6852620 9b1363c6d3e7395595687112f6632a36
http://security.debian.org/pool/updates/main/o/openoffice.org/ttf-opensymbol_1.1.3-9sarge4_all.deb
Size/MD5 checksum: 137130 89898024ed9949ede2af7df7a907857b
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-bin_1.1.3-9sarge4_i386.deb
Size/MD5 checksum: 41473164 201d3654e0f25c09cad426a834a6a732
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-dev_1.1.3-9sarge4_i386.deb
Size/MD5 checksum: 1858664 17e895e4db8a124105597bd091fe77db
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-evolution_1.1.3-9sarge4_i386.deb
Size/MD5 checksum: 164568 dd1b783a99d9d7e08fa7d0f3707cdf16
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-gtk-gnome_1.1.3-9sarge4_i386.deb
Size/MD5 checksum: 160158 12e000d7418c4c79540cb0dabdf73c31
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-kde_1.1.3-9sarge4_i386.deb
Size/MD5 checksum: 144160 efafeabb9e208f32dcd4d930f022453e
PowerPC architecture:
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-bin_1.1.3-9sarge4_powerpc.deb
Size/MD5 checksum: 39929314 f47ffa291dc5e5423ad286da20780fa0
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-dev_1.1.3-9sarge4_powerpc.deb
Size/MD5 checksum: 1865702 af0983cce9e7f71bfa36445eb525c8be
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-evolution_1.1.3-9sarge4_powerpc.deb
Size/MD5 checksum: 161596 ddba4d76fed158c9c4c0441e0de71647
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-gtk-gnome_1.1.3-9sarge4_powerpc.deb
Size/MD5 checksum: 158824 e50a700f00a8fb92ddaf554fe3cc6fdd
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-kde_1.1.3-9sarge4_powerpc.deb
Size/MD5 checksum: 142330 8746389ad88f5176a6db6b75c0c503cb
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-bin_1.1.3-9sarge4_s390.deb
Size/MD5 checksum: 42751682 c5b8173b85bf0f0931c98c2f204a5c05
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-dev_1.1.3-9sarge4_s390.deb
Size/MD5 checksum: 1852730 18d41fcb730e667b6eaeb600dd36a1b5
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-evolution_1.1.3-9sarge4_s390.deb
Size/MD5 checksum: 166852 0122761ef0c613aa3f64f7e6685a7311
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-gtk-gnome_1.1.3-9sarge4_s390.deb
Size/MD5 checksum: 166716 c70e54ac2a1ab5c4b23fb017128db5ec
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-kde_1.1.3-9sarge4_s390.deb
Size/MD5 checksum: 145354 fec4c419919354ae32c114563c8b6390
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-bin_1.1.3-9sarge4_sparc.deb
Size/MD5 checksum: 40804144 3f6d727294d3992769146240bb532e69
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-dev_1.1.3-9sarge4_sparc.deb
Size/MD5 checksum: 1847714 7d50650e99e42aa2f0da81493b862274
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-evolution_1.1.3-9sarge4_sparc.deb
Size/MD5 checksum: 168000 b703ad63b11459d7062517a7cbb1b776
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-gtk-gnome_1.1.3-9sarge4_sparc.deb
Size/MD5 checksum: 158394 e2ec76119983f45320a3d2aa5b9112f4
http://security.debian.org/pool/updates/main/o/openoffice.org/openoffice.org-kde_1.1.3-9sarge4_sparc.deb
Size/MD5 checksum: 139900 e7b6f94dabdbe6ac98b9e22d8425c27c
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-2007:0001-01）以及相应补丁:
RHSA-2007:0001-01：Important: openoffice.org security update
链接：
http://lwn.net/Alerts/216323/?format=printable
Sun
---
Sun已经为此发布了一个安全公告（Sun-Alert-102735）以及相应补丁:
Sun-Alert-102735：Security Vulnerability With StarOffice/StarSuite Versions 6, 7 and 8 Related to the ’.wmf’ File Format
链接：
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102735-1
Gentoo
------
Gentoo已经为此发布了一个安全公告（GLSA-200701-07）以及相应补丁:
GLSA-200701-07：OpenOffice.org: EMF/WMF file handling vulnerabilities
链接：
http://security.gentoo.org/glsa/glsa-200701-07.xml
所有OpenOffice.org二进制程序用户都应升级到2.1.0或之后版本：
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-office/openoffice-bin-2.1.0"
所有OpenOffice.org用户都应升级到2.0.4或之后版本：
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-office/openoffice-2.0.4"
OpenOffice
----------
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：
http://download.openoffice.org/2.1.0/index.html
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