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)
53 lines
No EOL
2.4 KiB
Text
53 lines
No EOL
2.4 KiB
Text
Source: https://code.google.com/p/google-security-research/issues/detail?id=526
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Fuzzing of packed executables found the attached crash.
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0:022> g
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(83c.bbc): Access violation - code c0000005 (first chance)
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First chance exceptions are reported before any exception handling.
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This exception may be expected and handled.
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eax=00000005 ebx=04320481 ecx=7ffffffd edx=f50139ce esi=80000027 edi=0432005c
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eip=15de0bd2 esp=0bb4ee04 ebp=0bb4ee20 iopl=0 ov up ei pl nz na pe nc
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cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010a06
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15de0bd2 8a843700040000 mov al,byte ptr [edi+esi+400h] ds:002b:84320483=??
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If I step through that address calculation:
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0:022> p
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eax=00000005 ebx=04320481 ecx=7ffffffd edx=f50139ce esi=80000022 edi=0432005c
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eip=15de0d3a esp=0bb4ee04 ebp=0bb4ee20 iopl=0 nv up ei pl zr na pe nc
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cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000246
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15de0d3a 03f0 add esi,eax
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0:022> p
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eax=00000005 ebx=04320481 ecx=7ffffffd edx=f50139ce esi=80000027 edi=0432005c
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eip=15de0d3c esp=0bb4ee04 ebp=0bb4ee20 iopl=0 nv up ei ng nz na pe nc
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cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000286
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15de0d3c 3b75f0 cmp esi,dword ptr [ebp-10h] ss:002b:0bb4ee10=000003f1
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0:022> p
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eax=00000005 ebx=04320481 ecx=7ffffffd edx=f50139ce esi=80000027 edi=0432005c
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eip=15de0d3f esp=0bb4ee04 ebp=0bb4ee20 iopl=0 ov up ei pl nz na pe nc
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cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000a06
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15de0d3f 0f8c8dfeffff jl 15de0bd2 [br=1]
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0:022> p
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eax=00000005 ebx=04320481 ecx=7ffffffd edx=f50139ce esi=80000027 edi=0432005c
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eip=15de0bd2 esp=0bb4ee04 ebp=0bb4ee20 iopl=0 ov up ei pl nz na pe nc
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cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000a06
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15de0bd2 8a843700040000 mov al,byte ptr [edi+esi+400h] ds:002b:84320483=??
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This looks like an integer overflow:
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int base;
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int index;
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if (base + index > argMaxSize)
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goto error;
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Because it's a signed comparison, 7ffffffd + 5 is
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0:022> ? ecx + eax
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Evaluate expression: -2147483646
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Which is less than 0x3f1, the size parameter. Those values are directly from the executable being scanned.
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Proof of Concept:
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https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/38283.zip |