Linux Kernel "execve()"内存扩展"OOM-killer"本地拒绝服务漏洞

BUGTRAQ ID: 45004 CVE ID: CVE-2010-4243 Linux Kernel是开放源码操作系统Linux所使用的内核。 Linux Kernel的"OOM-killer"功能在实现上存在安全漏洞，本地攻击者可利用此漏洞终止不相关的进程，造成拒绝服务。 漏洞源于oomkill函数看不到没有附加到任何线程的已分配内存。 Linux kernel 2.6.24.3 - 2.6.37 RedHat Enterprise Linux Desktop v.5 client 厂商补丁： Linux ----- 目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载...

Unpatched Flaw in IE Bypasses Key Windows Security Features

An exploit exploiting an unpatched vulnerability in Internet Explorer IE has gone public. Security researcher Shahin Ramezany announced in a Tuesday tweet that he successfully exploited the flaw, which involves how IE handles CSS style sheets on Windows 7 and Vista machines. Offensive Security, a...

Microsoft Warns On New Browser Vulnerability

Microsoft on Wednesday issued a security advisory to users of its Internet Explorer Web browser about a newly disclosed vulnerability that could be exploited and used to run malicious code on vulnerable Windows systems. The Redmond, Washington company said it is investigating new, public reports ...

Linux Kernel 2.6.37 - setup_arg_pages() Denial of Service

Linux Kernel 2.6.37 - setupargpages Denial of Service // source: https://www.securityfocus.com/bid/44301/info / known for over a year, fixed in grsec bug is due to a bad limit on the max size of the stack for 32bit apps on a 64bit OS. Instead of them being limited to 1/4th of a 32bit address spac...

Microsoft Releases New Version of EMET Exploit Mitigation Toolkit

Mitigation has become the word of the moment at Microsoft, and the company on Thursday continued its recent flow of tools designed to lessen the effectiveness of certain attacks with the release of version 2.0 of its Enhanced Mitigation Experience Toolkit. The new version of the toolkit includes ...

Linux/ARM - Disable ASLR Security - 102 bytes

Linux/ARM - Disable ASLR Security - 102 bytes. Shellcode exploit for linux platform / Title: Linux/ARM - Disable ASLR Security - 102 bytes Date: 2010-06-20 Tested: Linux ARM9 2.6.28-6-versatile Author: Jonathan Salwan Web: http://shell-storm.org | http://twitter.com/jonathansalwan ! Database of...

linux/x86-64 Disable ASLR Security 143 bytes

Exploit for linux/x86-64 platform in category shellcode ============================================ linux/x86-64 Disable ASLR Security 143 bytes ============================================ / Title: Linux/x86-64 - Disable ASLR Security - 143 bytes Date: 2010-06-17 Tested: Archlinux x8664 k2.6.33...

Mozilla Falls Short on Firefox ASLR Implementation

Like Apple’s Safari, the open-source Mozilla Firefox browser does not properly implement ASLR, a key anti-exploit mitigation that can limit the damage from hacker attacks. Nils, the U.K.-based researcher who compromised a Windows machine running Firefox for the second year in a row told me it’s...

CORE-2009-0803: Virtual PC Hypervisor Memory Protection Vulnerability

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Core Security Technologies - CoreLabs Advisory http://www.coresecurity.com/corelabs/ Virtual PC Hypervisor Memory Protection Vulnerability 1. Advisory Information Title: Virtual PC Hypervisor Memory Protection Vulnerability Advisory Id: CORE-2009-0803...

Virtual PC Hypervisor - Memory Protection

Virtual PC Hypervisor - Memory Protection -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Core Security Technologies - CoreLabs Advisory http://www.coresecurity.com/corelabs/ Virtual PC Hypervisor Memory Protection Vulnerability 1. Advisory Information Title: Virtual PC Hypervisor Memory Protection...

kernel: personality: fix PER_CLEAR_ON_SETID

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PERCLEARONSETID setting that does not clear the ADDRCOMPATLAYOUT and MMAPPAGEZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to 1 conduct NULL...

kernel: personality: fix PER_CLEAR_ON_SETID

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PERCLEARONSETID setting that does not clear the ADDRCOMPATLAYOUT and MMAPPAGEZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to 1 conduct NULL...

Mandriva Linux Security Advisory : kernel (MDVSA-2009:289)

Some vulnerabilities were discovered and corrected in the Linux 2.6 kernel : The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PERCLEARONSETID setting that does not clear the ADDRCOMPATLAYOUT and MMAPPAGEZERO flags when executing a setuid or setgid program, which makes it easi...

USN-852-1: Linux kernel vulnerabilities

Solar Designer discovered that the z90crypt driver did not correctly check capabilities. A local attacker could exploit this to shut down the device, leading to a denial of service. Only affected Ubuntu 6.06. CVE-2009-1883 Michael Buesch discovered that the SGI GRU driver did not correctly check...

kernel: personality: fix PER_CLEAR_ON_SETID

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PERCLEARONSETID setting that does not clear the ADDRCOMPATLAYOUT and MMAPPAGEZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to 1 conduct NULL...

RedHat Security Advisory RHSA-2009:1438

The remote host is missing updates to the Linux kernel announced in advisory RHSA-2009:1438. This update fixes the following security issues: the ADDRCOMPATLAYOUT and MMAPPAGEZERO flags were not cleared when a setuid or setgid program was executed. A local, unprivileged user could use this flaw t...

Null pointer dereference

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PERCLEARONSETID setting that does not clear the ADDRCOMPATLAYOUT and MMAPPAGEZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to 1 conduct NULL...

Linux Kernel PER_CLEAR_ON_SETID绕过安全限制漏洞

BUGTRAQ ID: 35647 Linux Kernel是开放源码操作系统Linux所使用的内核。 Linux Kernel的PERCLEARONSETID mask没有包含有MMAPPAGEZERO和ADDRCOMPATLAYOUT，这可能允许本地用户绕过mmapminaddr保护，或禁用某些ASLR（地址空间布局随机化）功能。 Linux kernel 2.6.x 厂商补丁： Linux ----- 目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：...

New attack class exploits intranet weaknesses

A security researcher has developed an interesting new class of attacks that exploit the problems caused by organizations using non-routable IP space on their internal networks, including one attack that compromises VPN users through the use of a persistent JavaScript backdoor. The attacks rely o...

Positron Security Advisory #2009-001: Memcached and MemcacheDB ASLR Bypass Weakness

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 POSITRON SECURITY LLC http://www.positronsecurity.com/ Security Advisory 2009-001 Memcached and MemcacheDB ASLR Bypass Weakness Author: Joe Testa jt atsign positronsecuritydotcom Date: April 28th, 2009 URL:...