概述
Microsoft Word 是 Microsoft Office 附带的文字处理应用程序。根据默认安装，Microsoft Word 处理多信息文本格式 (RTF) 文档。Microsoft Office wwlib 中的一个漏洞允许攻击者以打开恶意 RTF 文档的受害者的权限实现远程代码执行。攻击者可以将此文件作为电子邮件附件（或其他方式）传递。
漏洞详情
0d6cf0b6 0fbf0e movsx ecx,word ptr [esi] ; load base idx0d6cf0b9 0fbf5602 movsx edx,word ptr [esi+2] ; load font idx0d6cf0bd 8d1451 lea edx,[ecx+edx*2] ; multiply by ~30d6cf0c0 668b08 mov cx,word ptr [eax] ; load the codepage value0d6cf0c3 66894c5604 mov word ptr [esi+edx*2+4],cx ; write the code page
*** edx will become: 0x17fc8 (from 0x7fec+0x7fee*2)*** edx will become: 0x17fc9 (from 0x7fed+0x7fee*2)*** edx will become: 0x17fde (from 0x7fee+0x7ff8*2)*** edx will become: 0x17fdf (from 0x7fef+0x7ff8*2)*** edx will become: 0x17fe0 (from 0x7ff0+0x7ff8*2)*** edx will become: 0x17fe1 (from 0x7ff1+0x7ff8*2)*** edx will become: 0x17fe2 (from 0x7ff2+0x7ff8*2)*** edx will become: 0x17fe3 (from 0x7ff3+0x7ff8*2)*** edx will become: 0x17fe4 (from 0x7ff4+0x7ff8*2)*** edx will become: 0x17fe5 (from 0x7ff5+0x7ff8*2)*** edx will become: 0x17fe6 (from 0x7ff6+0x7ff8*2)*** edx will become: 0x17fe7 (from 0x7ff7+0x7ff8*2)*** edx will become: 0xffff7ffc (from 0x7ff8+0xffff8002*2)
*** writing 0x4e4 to 0xd35ddb4 [0xd32de20+0x17fc8*2+4]*** writing 0x4e4 to 0xd35ddb6 [0xd32de20+0x17fc9*2+4]*** writing 0x4e4 to 0xd35dde0 [0xd32de20+0x17fde*2+4]*** writing 0x4e4 to 0xd35dde2 [0xd32de20+0x17fdf*2+4]*** writing 0x4e4 to 0xd35dde4 [0xd32de20+0x17fe0*2+4]*** writing 0x4e4 to 0xd35dde6 [0xd32de20+0x17fe1*2+4]*** writing 0x4e4 to 0xd35dde8 [0xd32de20+0x17fe2*2+4]*** writing 0x4e4 to 0xd35ddea [0xd32de20+0x17fe3*2+4]*** writing 0x4e4 to 0xd35ddec [0xd32de20+0x17fe4*2+4]*** writing 0x4e4 to 0xd35ddee [0xd32de20+0x17fe5*2+4]*** writing 0x4e4 to 0xd35ddf0 [0xd32de20+0x17fe6*2+4]*** writing 0x4e4 to 0xd35ddf2 [0xd32de20+0x17fe7*2+4]*** writing 0x4e4 to 0xd31de1c [0xd32de20+0xffff7ffc*2+4]
Critical error detected c0000374(3ba8.21f4): WOW64 breakpoint - code 4000001f (first chance)First chance exceptions are reported before any exception handling.This exception may be expected and handled.ntdll_77a40000!RtlReportCriticalFailure+0x4b:77b27012 cc int 30:000:x86> kv# ChildEBP RetAddr Args to Child00 008f3834 77b30114 00000001 77b63990 77b2e009 ntdll_77a40000!RtlReportCriticalFailure+0x4b (FPO: [Non-Fpo])01 008f3840 77b2e009 70dcf286 00000000 1ff78c20 ntdll_77a40000!RtlpReportHeapFailure+0x2f (FPO: [0,0,4])02 008f3870 77b36480 00000003 00a50000 1ff78c20 ntdll_77a40000!RtlpHpHeapHandleError+0x89 (FPO: [Non-Fpo])03 008f3888 77b2dd17 1ff78c20 0000000a 00000000 ntdll_77a40000!RtlpLogHeapFailure+0x43 (FPO: [Non-Fpo])04 008f38ec 77a83f8d 00a50258 70dcf0be 1ff78c20 ntdll_77a40000!RtlpAnalyzeHeapFailure+0x281 (FPO: [Non-Fpo])05 008f3a48 77ac7b9d 1ff78c20 1ff78c28 1ff78c28 ntdll_77a40000!RtlpFreeHeap+0x24d (FPO: [Non-Fpo])06 008f3aa4 77a83ce6 00000000 00000000 00000000 ntdll_77a40000!RtlpFreeHeapInternal+0x783 (FPO: [Non-Fpo])07 008f3ac4 05343c06 00a50000 00000000 1ff78c28 ntdll_77a40000!RtlFreeHeap+0x46 (FPO: [Non-Fpo])08 008f3adc 06e6e330 1ff78c28 06c8dc6d 08a11040 mso20win32client!Mso::Memory::Free+0x47 (FPO: [Non-Fpo])09 008f3b0c 0430b5af 08a1104c 08a11040 08a11044 mso!MsoFreePpv+0x84 (FPO: [Non-Fpo])0a 008f3b28 0430bed0 008f9f0c 008f586c ffffffff wwlib!FreeHribl+0x8c (FPO: [Non-Fpo])0b 008f3b70 033be323 40280000 00200002 1a772b98 wwlib!PdodCreateRtf+0x243 (FPO: [6,13,4])0c 008f52bc 02e465db 04012000 20280000 00200002 wwlib!``Osf::SimpleFlight::Details::SetupFlight_String'::`3'::::operator()'::`2'::`dynamic atexit destructor for 'scopes''+0x1e09660d 008f5600 03031155 00000000 ffffffff 00000000 wwlib!PdodCreatePfnCore+0x321 (FPO: [Non-Fpo])0e 008f5680 0301583a 00000000 ffffffff 00000000 wwlib!PdodCreatePfnBPPaapWithEdpi+0x75 (FPO: [18,3,4])0f 008f8c4c 030175d4 04012000 00000000 00000002 wwlib!PdodOpenFnmCore2+0xf3b (FPO: [Non-Fpo])10 008f8d14 03c43d9b 04012000 00000000 00000002 wwlib!PdodOpenFnmCore+0xb9 (FPO: [15,30,0])11 008f9e40 03c43a92 00000000 00000000 00000002 wwlib!FFileOpenXszCore+0x2f6 (FPO: [Non-Fpo])12 008f9e7c 0343bd43 00000000 00000000 00000002 wwlib!FFileOpenXstzCore+0x3d (FPO: [6,4,0])13 008fb31c 02d17666 00000001 00000000 02d17609 wwlib!``Osf::SimpleFlight::Details::SetupFlight_String'::`3'::::operator()'::`2'::`dynamic atexit destructor for 'scopes''+0x271a8e14 008fb554 02c594f5 71fc93df 7625f550 0000000a wwlib!Boot::IfrParseCommandLine2+0x5d (FPO: [Non-Fpo])15 008fb5c8 02c59317 008fb5f8 02c50000 02c58ff4 wwlib!Boot::FRun+0xb4 (FPO: [Non-Fpo])16 008ff684 02c59058 96c6d88c 000800e4 71fcd0a7 wwlib!FWordBoot+0x5a (FPO: [Non-Fpo])17 008ff6b8 00dd1917 00dd0000 00000000 0000000a wwlib!FMain+0x64 (FPO: [Non-Fpo])18 008ff908 00dd114a 00dd0000 00000000 00a54944 winword!WinMain+0x146 (FPO: [Non-Fpo])19 008ff954 7625fa29 0069a000 7625fa10 008ff9c0 winword!std::_Deallocate<8,0>+0x1e3 (FPO: [Non-Fpo])1a 008ff964 77aa7bbe 0069a000 70dc3336 00000000 KERNEL32!BaseThreadInitThunk+0x19 (FPO: [Non-Fpo])1b 008ff9c0 77aa7b8e ffffffff 77ac8d0f 00000000 ntdll_77a40000!__RtlUserThreadStart+0x2f (FPO: [SEH])1c 008ff9d0 00000000 00dd1000 0069a000 00000000 ntdll_77a40000!_RtlUserThreadStart+0x1b (FPO: [Non-Fpo])
(afe8.9a5c): Access violation - code c0000005 (first chance)First chance exceptions are reported before any exception handling.This exception may be expected and handled.wwlib!FSearchFtcmap+0x150:0dc1f0c3 66894c5604 mov word ptr [esi+edx*2+4],cx ds:002b:1ebf2fec=????0:000:x86> kv# ChildEBP RetAddr Args to Child00 0135135c 0dc0fa17 013513ec 00000001 013513d8 wwlib!FSearchFtcmap+0x150 (FPO: [Non-Fpo])01 01353828 0dc0ddb5 ddc5a2cb 0b3d3028 000ad400 wwlib!RtfInRare+0x1845 (FPO: [Non-Fpo])02 01353c5c 0ef5c473 00000200 0b3d3028 66565a58 wwlib!CchRtfInCore+0x28df (FPO: [Non-Fpo])03 01353eac 0ef5be04 0b3d302c 0135a294 01355bf4 wwlib!RtfGetChars+0x183 (FPO: [Non-Fpo])04 01353ef8 0e00e323 40280000 00200002 45646f10 wwlib!PdodCreateRtf+0x177 (FPO: [6,13,4])05 01355644 0da965db 04012000 20280000 00200002 wwlib!``Osf::SimpleFlight::Details::SetupFlight_String'::`3'::::operator()'::`2'::`dynamic atexit destructor for 'scopes''+0x1e096606 01355988 0dc81155 00000000 ffffffff 00000000 wwlib!PdodCreatePfnCore+0x321 (FPO: [Non-Fpo])07 01355a08 0dc6583a 00000000 ffffffff 00000000 wwlib!PdodCreatePfnBPPaapWithEdpi+0x75 (FPO: [18,3,4])08 01358fd4 0dc675d4 04012000 00000000 00000002 wwlib!PdodOpenFnmCore2+0xf3b (FPO: [Non-Fpo])09 0135909c 0e893d9b 04012000 00000000 00000002 wwlib!PdodOpenFnmCore+0xb9 (FPO: [15,30,0])0a 0135a1c8 0e893a92 00000000 00000000 00000002 wwlib!FFileOpenXszCore+0x2f6 (FPO: [Non-Fpo])0b 0135a204 0e08bd43 00000000 00000000 00000002 wwlib!FFileOpenXstzCore+0x3d (FPO: [6,4,0])0c 0135b6a4 0d967666 00000001 00000000 0d967609 wwlib!``Osf::SimpleFlight::Details::SetupFlight_String'::`3'::::operator()'::`2'::`dynamic atexit destructor for 'scopes''+0x271a8e0d 0135b8dc 0d8a94f5 ddc527df 7625f550 0000000a wwlib!Boot::IfrParseCommandLine2+0x5d (FPO: [Non-Fpo])0e 0135b954 0d8a9317 0135b984 0d8a0000 0d8a8ff4 wwlib!Boot::FRun+0xb4 (FPO: [Non-Fpo])0f 0135fa10 0d8a9058 cbd5c9e4 00080138 ddc564d3 wwlib!FWordBoot+0x5a (FPO: [Non-Fpo])10 0135fa44 00dd1917 00dd0000 00000000 0000000a wwlib!FMain+0x64 (FPO: [Non-Fpo])11 0135fc94 00dd114a 00dd0000 00000000 05e18ff4 winword!WinMain+0x146 (FPO: [Non-Fpo])12 0135fce0 7625fa29 011cf000 7625fa10 0135fd4c winword!std::_Deallocate<8,0>+0x1e3 (FPO: [Non-Fpo])13 0135fcf0 77aa7bbe 011cf000 96082e8a 00000000 KERNEL32!BaseThreadInitThunk+0x19 (FPO: [Non-Fpo])14 0135fd4c 77aa7b8e ffffffff 77ac8d34 00000000 ntdll_77a40000!__RtlUserThreadStart+0x2f (FPO: [SEH])15 0135fd5c 00000000 00dd1000 011cf000 00000000 ntdll_77a40000!_RtlUserThreadStart+0x1b (FPO: [Non-Fpo])
影响范围
-
Microsoft 365 Apps for Enterprise for 32-bit Systems -
Microsoft 365 Apps for Enterprise for 64-bit Systems -
Microsoft Office 2019 for 32-bit editions -
Microsoft Office 2019 for 64-bit editions -
Microsoft Office 2019 for Mac -
Microsoft Office LTSC 2021 for 32-bit editions -
Microsoft Office LTSC 2021 for 64-bit editions -
Microsoft Office LTSC for Mac 2021 -
Microsoft Office Online Server -
Microsoft Office Web Apps Server 2013 Service Pack 1 -
Microsoft SharePoint Enterprise Server 2013 Service Pack 1 -
Microsoft SharePoint Enterprise Server 2016 -
Microsoft SharePoint Foundation 2013 Service Pack 1 -
Microsoft SharePoint Server 2019 -
Microsoft SharePoint Server Subscription Edition -
Microsoft Word 2013 RT Service Pack 1 -
Microsoft Word 2013 Service Pack 1 (32-bit editions) -
Microsoft Word 2013 Service Pack 1 (64-bit editions) -
Microsoft Word 2016 (32-bit edition) -
Microsoft Word 2016 (64-bit edition) -
SharePoint Server Subscription Edition Language Pack
漏洞防护
1、打开Office应用，点击“文件”>“账户”，在产品信息中点击“更新选项”>“立即更新”
公众号回复【CVE-2023-21716】获取POC
-=[感·谢·阅·读]=-
关于我们
星网实验室成立（starnetlabs）于2021年10月，是智网安云（武汉）信息技术有限公司旗下安全研究院实验室之一，其成员主要来源于国内一线安全厂商或监管执法机构，多名成员取得CISSP，CISP，PMP，CISAW，PTE等国内网络安全圈行业认证证书，该实验室研究员多次参加国内和省内网络安全攻防比赛取得佳绩。实验室主要研究方向：网络安全攻防竞赛、最前沿的攻防技术，云计算安全、物联网安全等。形成一支结构合理、创新能力强的产学研队伍。星网实验室将持续沉淀前沿安全能力，面向产业输出业蓝军网络安全对抗工具、红队攻击武器平台、蜜网平台、大数据安全管理中心等产品，并持续开放各项核心能力，推动产业安全能力建设。护航各行业数字化变革，守护大数据时代的网络安全是星网实验室的使命。
大
佬
，
关
注
一
下
呗
！
原文始发于微信公众号（星网实验室）：Microsoft Word 远程代码执行漏洞（CVE-2023-21716）
免责声明:文章中涉及的程序(方法)可能带有攻击性，仅供安全研究与教学之用，读者将其信息做其他用途，由读者承担全部法律及连带责任，本站不承担任何法律及连带责任；如有问题可邮件联系(建议使用企业邮箱或有效邮箱,避免邮件被拦截，联系方式见首页)，望知悉。
- 左青龙
- 微信扫一扫
-
- 右白虎
- 微信扫一扫
-
评论