Shulou(Shulou.com)06/01 Report--

This article mainly explains "how to fix bash loopholes under CentOS Linux". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to fix bash vulnerabilities under CentOS Linux.

As soon as I turned on the computer today, I found that the bash loophole in the group was even more serious than the painstaking loophole. Well, it seems that there is something to do today.

System: centos5.x

1. Check if your server needs to be repaired

The code is as follows:

Env echo this is a test'() {:;}; echo vulnerable' bash-c "echo this is a test"

If the output is vulnerable, you will upgrade bash.

two。 Upgrade bash

The code is as follows:

Yum-y update bash

If it is a centos6 server, please execute / sbin/ldconfig after yum, and then restart the server.

3. Verification

The code is as follows:

Env echo this is a test'() {:;}; echo vulnerable' bash-c "echo this is a test"

If you report the following lines, there are no loopholes in your bash:

The code is as follows:

Bash: warning: x: ignoring function definition attempt

Bash: error importing function definition for `x'

This is a test

All right, whether you want to upgrade or not depends on whether your upper one has approved it or not.

At this point, I believe you have a deeper understanding of "how to fix bash vulnerabilities under CentOS Linux". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.