ed0e1e4d44
1979 changes to exploits/shellcodes Couchdb 1.5.0 - 'uuids' Denial of Service Apache CouchDB 1.5.0 - 'uuids' Denial of Service Beyond Remote 2.2.5.3 - Denial of Service (PoC) udisks2 2.8.0 - Denial of Service (PoC) Termite 3.4 - Denial of Service (PoC) SoftX FTP Client 3.3 - Denial of Service (PoC) Silverstripe 2.3.5 - Cross-Site Request Forgery / Open redirection SilverStripe CMS 2.3.5 - Cross-Site Request Forgery / Open Redirection Silverstripe CMS 3.0.2 - Multiple Vulnerabilities SilverStripe CMS 3.0.2 - Multiple Vulnerabilities Silverstripe CMS 2.4 - File Renaming Security Bypass SilverStripe CMS 2.4 - File Renaming Security Bypass Silverstripe CMS 2.4.5 - Multiple Cross-Site Scripting Vulnerabilities SilverStripe CMS 2.4.5 - Multiple Cross-Site Scripting Vulnerabilities Silverstripe CMS 2.4.7 - 'install.php' PHP Code Injection SilverStripe CMS 2.4.7 - 'install.php' PHP Code Injection Silverstripe Pixlr Image Editor - 'upload.php' Arbitrary File Upload SilverStripe CMS Pixlr Image Editor - 'upload.php' Arbitrary File Upload Silverstripe CMS 2.4.x - 'BackURL' Open Redirection SilverStripe CMS 2.4.x - 'BackURL' Open Redirection Silverstripe CMS - 'MemberLoginForm.php' Information Disclosure SilverStripe CMS - 'MemberLoginForm.php' Information Disclosure Silverstripe CMS - Multiple HTML Injection Vulnerabilities SilverStripe CMS - Multiple HTML Injection Vulnerabilities Apache CouchDB 1.7.0 and 2.x before 2.1.1 - Remote Privilege Escalation Apache CouchDB 1.7.0 / 2.x < 2.1.1 - Remote Privilege Escalation Monstra CMS before 3.0.4 - Cross-Site Scripting Monstra CMS < 3.0.4 - Cross-Site Scripting (2) Monstra CMS < 3.0.4 - Cross-Site Scripting Monstra CMS < 3.0.4 - Cross-Site Scripting (1) Navigate CMS 2.8 - Cross-Site Scripting Collectric CMU 1.0 - 'lang' SQL injection Joomla! Component CW Article Attachments 1.0.6 - 'id' SQL Injection LG SuperSign EZ CMS 2.5 - Remote Code Execution MyBB Visual Editor 1.8.18 - Cross-Site Scripting Joomla! Component AMGallery 1.2.3 - 'filter_category_id' SQL Injection Joomla! Component Micro Deal Factory 2.4.0 - 'id' SQL Injection RICOH Aficio MP 301 Printer - Cross-Site Scripting Joomla! Component Auction Factory 4.5.5 - 'filter_order' SQL Injection RICOH MP C6003 Printer - Cross-Site Scripting Linux/ARM - Egghunter (PWN!) + execve(_/bin/sh__ NULL_ NULL) Shellcode (28 Bytes) Linux/ARM - sigaction() Based Egghunter (PWN!) + execve(_/bin/sh__ NULL_ NULL) Shellcode (52 Bytes)
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57 lines
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2.2 KiB
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Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=895
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The DxgkDdiEscape handler for 0x7000194 doesn't do bounds checking with the
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user provided lengths it receives. When these lengths are passed to memcpy,
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overreads and memory corruption can occur.
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void __fastcall escape_7000194(NvMiniportDeviceContext *ctx, Escape7000194 *escape_data)
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...
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alloc_0_ = ExAllocatePoolWithTag_(PagedPool, escape->size_0, 0x7061564Eu);
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...
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alloc_1 = ExAllocatePoolWithTag_(PagedPool, escape->size_1, 0x7061564Eu);
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..
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if ( (_BYTE)v11 ) {
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memcpy(alloc_0, escape->buf_0, escape->size_0);
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memcpy(alloc_1, escape->buf_2, escape->size_1);
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}
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v8 = Escape7Handler(0i64, dword_7DCB84, *(_DWORD *)(v3 + 24), 0x402C0105, &escape->data, 96);
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v9 = v8;
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if ( !(_BYTE)v11 && !v8 )
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memcpy(escape->buf_0, alloc_0, escape->size_0);
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...
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The PoC I've provided causes an OOB read, but it should be possible to pass an
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input that results in the third memcpy being executed instead of the first two,
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which leads to kernel memory corruption (OOB write).
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(Win 10 x64 372.54) crashing context with PoC:
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PAGE_FAULT_IN_NONPAGED_AREA (5)
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...
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Some register values may be zeroed or incorrect.
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rax=0000000000000007 rbx=0000000000000000 rcx=ffffc000f5220f80
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rdx=fffffffff3d5509c rsi=0000000000000000 rdi=0000000000000000
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rip=fffff8007d4dad66 rsp=ffffd00166b9d2a8 rbp=ffffc000e8f55038
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r8=0000000000020fc0 r9=000000000006603e r10=0000000000020000
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r11=ffffc000f5200000 r12=0000000000000000 r13=0000000000000000
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r14=0000000000000000 r15=0000000000000000
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iopl=0 nv up ei pl nz na pe nc
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nvlddmkm+0x5dad66:
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fffff800`7d4dad66 f30f6f4c0ae0 movdqu xmm1,xmmword ptr [rdx+rcx-20h] ds:ffffc000`e8f75ffc=????????????????????????????????
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Resetting default scope
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To reproduce, compile the PoC as a x64 binary (requires linking with
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setupapi.lib, and WDK for D3DKMTEscape), and run. It may require some changes
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as for it to work as the escape data must contain the right values (e.g. a
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field that appears to be gpu bus device function). My PoC should hopefully set
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all the right values for the machine it's running on.
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Proof of Concept:
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https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/40658.zip |