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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2.9 KiB
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Source: https://code.google.com/p/google-security-research/issues/detail?id=682
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We have encountered a Windows kernel crash in the ATMFD.DLL OpenType driver while processing a corrupted OTF font file:
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---
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DRIVER_OVERRAN_STACK_BUFFER (f7)
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A driver has overrun a stack-based buffer. This overrun could potentially
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allow a malicious user to gain control of this machine.
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DESCRIPTION
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A driver overran a stack-based buffer (or local variable) in a way that would
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have overwritten the function's return address and jumped back to an arbitrary
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address when the function returned. This is the classic "buffer overrun"
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hacking attack and the system has been brought down to prevent a malicious user
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from gaining complete control of it.
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Do a kb to get a stack backtrace -- the last routine on the stack before the
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buffer overrun handlers and bugcheck call is the one that overran its local
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variable(s).
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Arguments:
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Arg1: a6703535, Actual security check cookie from the stack
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Arg2: 98ee9e09, Expected security check cookie
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Arg3: 671161f6, Complement of the expected security check cookie
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Arg4: 00000000, zero
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Debugging Details:
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------------------
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DEFAULT_BUCKET_ID: VERIFIER_ENABLED_VISTA_MINIDUMP
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SECURITY_COOKIE: Expected 98ee9e09 found a6703535
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CUSTOMER_CRASH_COUNT: 1
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BUGCHECK_STR: 0xF7
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PROCESS_NAME: csrss.exe
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CURRENT_IRQL: 0
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ANALYSIS_VERSION: 6.3.9600.17237 (debuggers(dbg).140716-0327) x86fre
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LAST_CONTROL_TRANSFER: from 98ea5720 to 82725b84
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STACK_TEXT:
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a6723488 98ea5720 000000f7 a6703535 98ee9e09 nt!KeBugCheckEx+0x1e
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WARNING: Stack unwind information not available. Following frames may be wrong.
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a67234a8 98ec57f6 00000085 00400000 08680370 ATMFD+0x15720
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a672353c 98ec5b0e 00400000 a6723790 00400000 ATMFD+0x357f6
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a6723610 8297ef90 ff68a000 00000000 ff68a000 ATMFD+0x35b0e
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a6723624 99180853 3e9ca839 a6723734 98ec5063 nt!VerifierExFreePoolWithTag+0x30
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a6723638 00400000 a672364c a6723790 a6723868 win32k!VerifierEngFreeMem+0x5b
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a6723790 98e95328 98e953b4 98e953be 98e95442 0x400000
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a67237c8 00000000 00001f98 00000000 00000000 ATMFD+0x5328
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---
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While we have not determined the specific root cause of the vulnerability, we have pinpointed the offending mutations to reside in the "CFF " table.
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The immediate reason of the bugcheck is a stack corruption detected by the stack cookie protection (/GS). The issue reproduces on Windows 7 and 8.1; other platforms were not tested. In our environment, it is sufficient to open the offending font in the default Windows Font Viewer to reproduce the crash, or even click on a folder icon containing the font in Windows Explorer.
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Attached is an archive with the proof-of-concept mutated OTF file, together with the original font used to generate it and a corresponding crash log from Windows 7 32-bit.
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Proof of Concept:
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https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/39561.zip |