Заметка про task_struct в ядре Linux.

В посте оформлены кусочки инфы по структуре taskstruct в ядре Linux. Ничего нового или эксклюзивного, но вероятно будет интересно тем, кто хочет разобраться в kernel части ядерных эксплойтов, не читая 1100 страниц Understanding the Linux Kernel. Из-за внедрения в линуксе разнообразных защит ныне...

kernel: install_special_mapping skips security_file_mmap check

The installspecialmapping function in mm/mmap.c in the Linux kernel before 2.6.37-rc6 does not make an expected securityfilemmap function call, which allows local users to bypass intended mmapminaddr restrictions and possibly conduct NULL pointer dereference attacks via a crafted assembly-languag...

kernel: install_special_mapping skips security_file_mmap check

The installspecialmapping function in mm/mmap.c in the Linux kernel before 2.6.37-rc6 does not make an expected securityfilemmap function call, which allows local users to bypass intended mmapminaddr restrictions and possibly conduct NULL pointer dereference attacks via a crafted assembly-languag...

CVE-2010-4346

The vulnerability CVE-2010-4346 affects the Linux kernel: install_special_mapping in mm/mmap.c before 2.6.37-rc6 does not call security_file_mmap as expected, allowing local users to bypass mmap_min_addr restrictions and potentially trigger NULL pointer dereference via a crafted assembly-language...

PT-2010-5429 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 2.6.37-rc6 Description: The issue is related to the install special mapping function in mm/mmap.c, which fails to make an expected security file mmap function call. This allows local users to bypass intended mma...

OSX/Intel - setuid shell x86_64 - 51 bytes

OSX/Intel - setuid shell x8664 - 51 bytes. Shellcode exploit for osx platform / Title: OSX/Intel - setuid shell x8664 - 51 bytes Date: 2010-11-25 Tested on: Mac OS X 10.6.5 - Darwin Kernel Version 10.5.0 Author: Dustin Schultz - twitter: @thexploit http://thexploit.com BITS 64 section .text globa...

FreeBSD - pseudofs Null Pointer Dereference Privilege Escalation

FreeBSD - pseudofs Null Pointer Dereference Privilege Escalation / source: https://www.securityfocus.com/bid/43060/info 18.08.2010, babcia padlina FreeBSD 7.0 - 7.2 pseudofs null ptr dereference exploit to obtain SYSENT8SYCALLADDR, run: $ kgdb /boot/kernel/kernel kgdb print &sysent8.sycall / defi...

kernel: untangle the do_mremap()

The Linux kernel before 2.6.32.4 allows local users to gain privileges or cause a denial of service panic by calling the 1 mmap or 2 mremap function, aka the "domremap mess" or "mremap/mmap mess."...

FreeBSD 6.4 root shell exploit 0 day-vulnerability warning-the black bar safety net

The following code exploit the vulnerability to run in kernel-mode code if 0 FreeBSD 6.4 and below are vulnerable to race condition between pipeclose and knlistcleardel resulting in NULL pointer dereference. The following code exploits the vulnerability to run code in kernel mode, giving root she...

Linux kernel 2.6.x mmap()和mremap()调用本地拒绝服务漏洞

BUGTRAQ ID: 37906 CVE ID: CVE-2010-0291 Linux Kernel是开放源码操作系统Linux所使用的内核。 Linux Kernel的某些mmap和mremap调用可能泄露内存内存，本地用户可以利用这个漏洞耗尽所有可用的内存，导致拒绝服务。 Linux kernel 2.6.x 厂商补丁： Debian ------ Debian已经为此发布了一个安全公告（DSA-1996-1）以及相应补丁: DSA-1996-1：New Linux 2.6.26 packages fix several vulnerabilities...

kernel: untangle the do_mremap()

The Linux kernel before 2.6.32.4 allows local users to gain privileges or cause a denial of service panic by calling the 1 mmap or 2 mremap function, aka the "domremap mess" or "mremap/mmap mess."...

Important: Red Hat Security Advisory: kernel security and bug fix update

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System CVSS base scores, which give detailed...

CVE-2010-0291

The Linux kernel before 2.6.32.4 allows local users to gain privileges or cause a denial of service panic by calling the 1 mmap or 2 mremap function, aka the "domremap mess" or "mremap/mmap mess."...

Code injection

The Linux kernel before 2.6.32.4 allows local users to gain privileges or cause a denial of service panic by calling the 1 mmap or 2 mremap function, aka the "domremap mess" or "mremap/mmap mess."...

CVE-2010-0291

CVE-2010-0291 is a Linux kernel local privilege/escalation/DoS issue described in connected advisories as affecting the kernel before 2.6.32.4. The vulnerability stems from the do_mremap/mmap handling, allowing local users to gain privileges or trigger a panic. The MiracleLinux AXSA:2010-377:12 a...

CVE-2010-0291

The Linux kernel before 2.6.32.4 allows local users to gain privileges or cause a denial of service panic by calling the 1 mmap or 2 mremap function, aka the "domremap mess" or "mremap/mmap mess."...

PT-2010-2084

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.32.4 Description The issue allows local users to gain privileges or cause a denial of service by calling the mmap or mremap function. This is related to the do mremap function. Recommendations For versions...

DSA-1996-1 linux-2.6 - several vulnerabilities

Bulletin has no description...

kernel: SELinux and mmap_min_addr

The Linux kernel before 2.6.31-rc7 does not properly prevent mmap operations that target page zero and other low memory addresses, which allows local users to gain privileges by exploiting NULL pointer dereference vulnerabilities, related to 1 the default configuration of the allowunconfinedmmapl...

kernel: SELinux and mmap_min_addr

The Linux kernel before 2.6.31-rc7 does not properly prevent mmap operations that target page zero and other low memory addresses, which allows local users to gain privileges by exploiting NULL pointer dereference vulnerabilities, related to 1 the default configuration of the allowunconfinedmmapl...