linux vulnerability scanner

September 25 Message: a Linux security vulnerability that is alleged to be more severe than "bleeding heart" was found, although no attack was found to exploit the vulnerability, but a lower operating threshold than "heart bleed" made it more dangerous than the former.Bash is the software used to control the command prompt for a

Bash how to deal with the problem of security vulnerabilityOne: Vulnerability descriptionThe vulnerability stems from the special environment variables created before the bash shell that you invoke, which can contain code and be executed by bash.II: Software and systems identified for successful useAll Linux operating systems that install the version of Gun bash

Privilege Escalation using the Use-After-Free (UAF) vulnerability in the Linux Kernel Last month, the CVE-2016-0728 Local Elevation of Privilege Vulnerability let everyone's eyes again focused on Linux kernel security. Like CVE-2015-3636, CVE-2015-7312, and CVE-2014-2851, CVE-2016-0728 is a Use-After-Free (UAF) type

--with-http_secure_link_module --with-http_degradation_module--with-http_sysguard_module-- With-backtrace_module--with-http_stub_status_module--with-http_upstream_check_ Module--with-google_perftools_module--with-openssl=/d20141212/temp/openssl-1.0.1t #需要这一句, This directory refers to the source installation directory for OpenSSL. #此configure命令使用我的线上环境,, Copy this to write it makemakeinstall #为什么可以执行make install, because we've had a lot of modules before./configure. not afraid of Makeinst

Linux experiment--Buffer Overflow Vulnerability experiment20125121First, the experimental descriptionA buffer overflow is a scenario in which a program attempts to write to a buffer beyond the pre-allocated fixed-length data. This vulnerability could be exploited by malicious users to alter the flow control of a program, or even execute arbitrary fragments of cod

A ghost vulnerability is a serious security issue on the Linux glibc library that allows an attacker to remotely gain control of the operating system without knowing any of the systems. At present his CVE number is cve-2015-0235. Affected operating system version CentOS 6, 7Debian 7Red Hat Enterprise Linux 6, 7Ubuntu 10.04, 12.04And many other

Security experts said that the way Linux handles permissions may still lead to potential misoperations. However, RedHat does not agree with this, saying that the grinch ( ldquo; ghost genie rdquo;) Linux vulnerability published by AlertLogic on Tuesday (December 16) is not a security vulnerability at all. RedHat respo

Linux Bash Security Vulnerability repair Recently, a very serious security vulnerability was detected in the built-in Bash of Linux. Hackers can exploit this Bash vulnerability to completely control the target system and initiate attacks. To avoid

Canonical has just announced that it has discovered some Linux kernel vulnerabilities that affect the currently released Ubuntu13.04 system. The vulnerability contains a null pointer included in the Ceph client of the Linux kernel. Attackers may exploit this vulnerability to paralyze servers. The

Linux and Security experiment One: Buffer overflow vulnerability Experiment 20125113 Zhaoqiao, experimental descriptionA buffer overflow is a scenario in which a program attempts to write to a buffer beyond the pre-allocated fixed-length data. This can have some serious consequences. Buffer overflow attack: by writing to the program's buffer beyond its length content, causing buffer overflow, thereby destro

[sizeof (temp.buffer)];memset (name, ' 0 ', Len);Name[len] = ' + ';retval = gethostbyname_r (name, resbuf, Temp.buffer, sizeof (Temp.buffer), result, herrno);if (strcmp (temp.canary, canary)! = 0) {puts ("vulnerable");exit (exit_success);} if (retval = = erange) {puts ("not vulnerable");exit (exit_success);} puts ("should not Happen");exit (exit_failure);} And then compile the execution#gcc check_yl.c-o cve-2015-0235./cve-2015-0235If the result of the output is:vulnerableIndicates that the syste

Beijing Time September 25 news, Linux users today again got a "surprise"! The Red Hat security team found a cryptic and dangerous security breach in a widely used bash shell in Linux. This vulnerability is referred to as "Bash bugs" or "Shellshock". When the user is properly accessed, the vulnerability allows the atta

SET-UID Program Vulnerability Experiment20125113 ZhaoqiaoFirst, the experimental descriptionSet-uid is an important security mechanism in UNIX systems. When a set-uid program runs, it is assumed to have the permissions of the owner. For example, if the owner of the program is root, then anyone who runs the program will get permission from the program owner. Set-uid allows us to do a lot of interesting things, but unfortunately, it is also the culprit