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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). CanSecWest 2012 2nd Annual Cyber Security Hack In Paris	No Ptrace Module (NPT) 11 Sep. 2001     Credit: The information has been provided by Mariusz Woloszyn and Wojtek Kaniewski. Website Security Scan Code Vulnerability Test Network Assessment Tool Detect hidden vulnerabilities Exhaustive automated testing Real-time, continuous security Get guidance from professionals of internal or 3rd party code. scanning for your entire network    Details Protect your website! Use an External Vulnerability Scanner! Nothing to install. First report in 1 hour! www.beyondsecurity.com/vulnerability-scanner The following tool will disable ptrace for non-root users. Even though it doesn't prevent exploitation of the ptrace vulnerability (PTrace Improved Exploit Code Released (Race condition)), it will stop it from running successfully. Tool: /* no ptrace module    fast prevention for kernel bug    (c) 2001 a Lam3rZ oddysey */ #define MODULE #define __KERNEL__ #include <linux/module.h> #include <linux/sched.h> #include <linux/unistd.h> #include <sys/syscall.h> #ifndef KERNEL_VERSION #define KERNEL_VERSION(a,b,c) ((a)*65536+(b)*256+(c)) #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0) #include <asm/unistd.h> #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,14) #include <bits/syscall.h> #endif extern void *sys_call_table[]; int (*orig_ptrace)(int, int, int, int); int no_ptrace (int request, int pid, int addr, int data) {   if (current->euid ==0 ) {     return (orig_ptrace)(request, pid, addr, data);   } else   return -1; } int init_module(void) {      orig_ptrace = sys_call_table[__NR_ptrace];   sys_call_table[__NR_ptrace]=no_ptrace;   return 0; } void cleanup_module(void) {      sys_call_table[__NR_ptrace]=orig_ptrace; } Tool add-up: Adding something like:   printk("ptrace(): uid=%d, comm=%s\n", current->uid, current->comm); Before ,,return'' helps spot potential abusers.  Comments: blog comments powered by Disqus	All Sections Security News Unix focus Exploits Tools Windows focus Security Reviews  Related Articles Apache mod_rewrite Vulnerability PoC netsniff-ng - A Linux Network Analyzer and Networking Toolkit Simple Local File Inclusion Exploiter NiX A Linux Brute Forcer Nchop - A TCP Session Splicing Tool Used to Rvade Intrusion Detection Systems Netifera - Modular Open Source Platform for Security Tools WarVOX - Tools for Exploring, Classifying, and Auditing Telephone Systems Webshag - Web Server Audit Tool Browser Fuzzer FSpy - Linux Filesystem Activity Monitoring telnetrecon - Telnet Recon Zerowine Sandbox JPEG Fuzzer VNC Server Fuzzer RSH Fuzzer  Featured Articles ProFTPD Response Pool Use-After-Free Code Execution Vulnerability HP Data Protector Notebook Extension LogClientInstallation SQL Injection Vulnerabilty GE Proficy Historian ihDataArchiver.exe Trusted Header Size Code Execution Vulnerability Novell ZENWorks Software Packaging Antique ActiveX Control Code Execution Vulnerability Adobe Reader U3D IFF RGBA Parsing Code Execution Vulnerability Adobe Reader U3D PCX Parsing Code Execution Vulnerability Cisco Unified Service Monitor brstart add_dm Code Execution Vulnerability
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