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Home  Ask the Team  Mailing Lists  Advertising Info  Advisories  About SecuriTeam  Blogs Brought to you by: Suppliers of: Website Testing Tools Network Testing Tools Software Testing Tools SecuriTeam in Your Inbox New vulnerability? New tool? Tell us (Our PGP key). Confidence 2013 5% Off any SANS course Use Code: SecuriTeam_5 Hack In Paris La Nuit du Hack Subjects of Interest: Vulnerability Management SQL Injection Buffer Overflows Active Network Scanning Fuzzing Fuzzer Report Network Security Network Scanner Pen Testing Security Scanner	IA WebMail Server Buffer Overflow Vulnerability 4 Nov. 2003    Summary IA WebMail Server combined with the IA eMailServer is "a powerful combination for remote access. The IA WebMail Server will work with any standard Web browser to allow users access to their email from anywhere on the Internet. Most mail client programs require that they be reconfigured each time they are used by a different user. This feature is a definite boon to any user who travels or works from outside the office on occasion". The WebMail Server contains a buffer overflow in the HTTP GET request headers. If a page of 1044 bytes is requested, a saved return address on the stack is completely overwritten, and the instruction pointer can be fully controlled upon the execution of a 'retn' instruction. It is also possible to gain control of the ECX register during the process.   Credit: The original advisory can be found at: http://www.elitehaven.net/iawebmail.txt. The information has been provided by Peter Winter-Smith. Free Website Security Scan Free Fuzzer Report Vulnerability Assessment Detect web app vulnerabilities University study comparing the top Accurate and automated scanning Get guidance from professionals. 6 commercially availble fuzzers. for networks of any size.    Details Protect your website! Free Trial, Nothing to install. No interruption of visitors. www.beyondsecurity.com/vulnerability-scanner Vulnerable systems:  * IA WebMail Server version 3.1 Vulnerable code: This section is added for researchers, to give them a head start in locating the vulnerable function. The overflow is caused by an unchecked call to lstrcpya(). A call is made from 0x0041B98C to 0x0041D850, and the saved return address 0x0041B991 is placed on the stack. :0041B98A 8BCE                    mov ecx, esi :0041B98C E8BF1E0000              call 0041D850 In the sub procedure (0x0041D850), at 0x0041D8BB a pointer to a jmp strcpy() type instruction is located. :0041D8BB 8B2DCCA04200            mov ebp, dword ptr [0042A0CC] ; <- lstrcpya() :0041D8C1 40                      inc eax :0041D8C2 8D4C2430                lea ecx, dword ptr [esp+30] :0041D8C6 50                      push eax ; <- User supplied data :0041D8C7 51                      push ecx ; <- Unchecked buffer :0041D8C8 FFD5                    call ebp ; <- Call strcpy() At this point, the saved return address has been overwritten, and we are just waiting for the following return instruction. * Reference To: MFC42.Ordinal:0320, Ord:0320h :0041DC45 E8F2830000              Call 0042603C :0041DC4A 8B8C2434040000          mov ecx, dword ptr [esp+00000434] :0041DC51 5F                      pop edi :0041DC52 5E                      pop esi :0041DC53 5D                      pop ebp :0041DC54 33C0                    xor eax, eax :0041DC56 64890D00000000          mov dword ptr fs:[00000000], ecx :0041DC5D 5B                      pop ebx :0041DC5E 81C430040000            add esp, 00000430 :0041DC64 C3                      ret ; <- Here we gain control of the EIP The altered saved return address is pop'ed off the stack instead of the real saved return address.  Comments: blog comments powered by Disqus	All Sections Security News Unix focus Exploits Tools Windows focus Security Reviews  Related Articles Microsoft Windows USB Driver Memory Object Handling Local Privilege (2013-1287) Vulnerability Microsoft IE SaveHistory Onload Event Handling Use-After-Free Arbitrary Code Execution Vulnerability Microsoft IE CMarkupBehaviorContext Use-After-Free Arbitrary Code Execution Vulnerability Microsoft SharePoint XSS Vulnerability Microsoft IE OnBeforeCopy Use-After-Free Arbitrary Code Execution Vulnerability Microsoft Windows USB Driver Memory Object Handling Local Privilege Escalation Vulnerability Microsoft OneNote Buffer Size Validation ONE File Handling Information Disclosure Vulnerability Microsoft IE GetMarkupPtr execCommand Print Event Handling Use-after-free Execution Vulnerability Microsoft SharePoint Remote Overflow DoS Vulnerability Microsoft IE CTreeNode Use-After-Free Arbitrary Code Execution Vulnerability Microsoft Windows USB Driver Memory Object Handling Local Privilege (2013-1286) Vulnerability Microsoft IE CTreeNode Use-After-Free Use-After-Free Arbitrary Execution Vulnerability Microsoft IE Proxy Server TCP Session Re-Use Cross-User Information Disclosure Weakness Vulnerability Microsoft IE Shift JIS Character Encoding Information Disclosure Vulnerability Microsoft IE SetCapture Use-after-free Arbitrary Code Execution Vulnerability Microsoft IE Vector Markup Language (VML) Buffer Allocation Memory Corruption Vulnerability Microsoft Windows Kernel Memory Object Handling Local Privilege Escalation Vulnerability Microsoft System Center Operations Web Console XSS Vulnerability Microsoft Lync User-Agent Header Handling Remote Arbitrary Command Execution Vulnerability Microsoft System Center Operations Manager Web Console XSS Vulnerability  Featured Articles Microsoft Windows USB Driver Memory Object Handling Local Privilege (2013-1287) Vulnerability Microsoft Windows USB Driver Memory Object Handling Local Privilege Escalation Vulnerability Microsoft Windows Kernel Memory Object Handling Local Privilege Escalation Vulnerability Microsoft Windows SSL/TSL Forced Downgrade MitM Weakness Microsoft Windows Memory Object Handling Local Memory Privilege Escalation Vulnerability Microsoft Windows Privilege Escalation Vulnerability Microsoft .NET Framework Serialization Remote Code Execution Vulnerability Microsoft Visio Viewer VSD File Format Remote Code Execution Vulnerability Microsoft .NET Framework Input Serialization CVE-2012-0160 Remote Code Execution Vulnerability Microsoft .NET Framework ASP.NET Forms Authentication Bypass Vulnerability 'TrendMicro Control Manager CASProcessor.exe BLOB Code Execution Vulnerability' 'HP iNode Management Center iNodeMngChecker.exe Code Execution Vulnerability' 'HP Data Protector Backup Client Service EXEC_SCRIPT Code Execution Vulnerability' 'Microsoft Internet Explorer Property Change Memory Corruption Vulnerability' 'Microsoft Office PowerPoint PersistDirectoryEntry Code Execution Vulnerability' 'CA Total Defense Suite Heartbeat Web Service Code Execution Vulnerability' 'HP Web Jetadmin Unauthorized Access to Managed Resources Vulnerability' 'Novell Zenworks Handheld Management ZfHIPCnd.exe Opcode 2 Code Execution Vulnerability' 'Microsoft Windows Shell Graphics biCompression Buffer Overflow Vulnerability' 'Microsoft Office PICT Filter Integer Truncation Vulnerability'
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