Linux???????????????bash??????????
???????????? ???????[ 2015/1/13 13:24:24 ] ??????????????? Linux ??????
#?????????????????????硢????????????????????????????á?SSH???á??????????м??
Checking the network...
Performing checks on the network ports
Checking for backdoor ports [ None found ]
Performing checks on the network interfaces
Checking for promiscuous interfaces [ None found ]
Checking the local host...
Performing system boot checks
Checking for local host name [ Found ]
Checking for system startup files [ Found ]
Checking system startup files for malware [ None found ]
Performing group and account checks
Checking for passwd file [ Found ]
Checking for root equivalent (UID 0) accounts [ None found ]
Checking for passwordless accounts [ None found ]
....(??)....
[Press <ENTER> to continue]
#????????巋???????????ó???汾???м??
Checking application versions...
Checking version of GnuPG[ OK ]
Checking version of OpenSSL [ Warning ]
Checking version of OpenSSH [ OK ]
#?????????????????????????????????????????????????????????????????????????
System checks summary
=====================
File properties checks...
Required commands check failed
Files checked: 137
Suspect files: 4
Rootkit checks...
Rootkits checked : 311
Possible rootkits: 0
Applications checks...
Applications checked: 3
Suspect applications: 1
The system checks took: 6 minutes and 41 seconds
??????Linux??????rkhunter?????????????????????????в?????????????????????????????????????????????????????????????????м???????У?????????????????????Enter???????????????ó?????????У????????????????
????[root@server ~]# /usr/local/bin/rkhunter –check –skip-keypress
??????????????ü????????????У??????????/etc/crontab?м????????????
????30 09 * * * root /usr/local/bin/rkhunter –check –cronjob
??????????rkhunter?????????????9:30????????Ρ?
??????????£?
??????????Bash????????SSH bash?????????????????
??????????????????????????????
????$ env x='() { :;}; echo vulnerable' bash -c "echo this is a test"
????vulnerable
????this is a test
??????????????????????????????????????????????????
???????????????
????yum -y update bash
????????bash????в????
????$ env x='() { :;}; echo vulnerable' bash -c "echo this is a test"
????bash: warning: x: ignoring function definition attempt
????bash: error importing function definition for `x'
????this is a test
???????????????????????????????
??????
???·???
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2023/3/23 14:23:39???д?ò??????????
2023/3/22 16:17:39????????????????????Щ??
2022/6/14 16:14:27??????????????????????????
2021/10/18 15:37:44???????????????
2021/9/17 15:19:29???·???????·
2021/9/14 15:42:25?????????????
2021/5/28 17:25:47??????APP??????????
2021/5/8 17:01:11