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NEW QUESTION: 1
회사에는 각각 하나의 VPC를 포함하는 두 개의 AWS 계정이 있습니다. 첫 번째 VPC는 회사 네트워크와 VPN 연결을 갖습니다. VPN이 없는 두 번째 VPC는 프라이빗 서브넷에서 Amazon Aurora 데이터베이스 클러스터를 호스팅합니다. 개발자는 이미지와 같이 퍼블릭 서브넷의 배스 천 호스트에서 Aurora 데이터베이스를 관리합니다.
보안 검토 결과이 아키텍처가 취약한 것으로 표시되었으며 보안 엔지니어는이 설계를보다 안전하게 만들어야 합니다. 회사는 마감일이 짧으며 Aurora 계정에 대한 두 번째 VPN 연결이 불가능합니다.
보안 엔지니어가 요새 호스트를 어떻게 안전하게 설정할 수 있습니까?
A. VPN 연결을 통해 요새 호스트를 VPC로 이동합니다. 요새 VPC와 Aurora VPC간에 계정 간 신뢰 관계를 생성하고 관계에 대한 Aurora 보안 그룹을 업데이트하십시오.
B. VPN 연결을 통해 요새 호스트를 VPC로 옮깁니다. 요새 호스트 VPC와 Aurora VPC간에 VPC 피어링 관계를 만듭니다.
C. 회사 네트워크와 Aurora 계정간에 AWS Direct Connect 연결을 생성하고이 연결에 맞게 Aurora 보안 그룹을 조정하십시오.
D. 인증 된 SSH 클라이언트 만 요새 호스트에 액세스 할 수 있도록 개발자 워크 스테이션에서 요새 포트로 SSH 포트 전달 터널을 만듭니다.
Answer: B
NEW QUESTION: 2
The security administrator finds unauthorized tables and records, which were not present before, on a Linux database server. The database server communicates only with one web server, which connects to the database server via an account with SELECT only privileges.
Web server logs show the following:
90.76.165.40 - - [08/Mar/2014:10:54:04] "GET
calendar.php?create%20table%20hiddenHTTP/1.1" 200 5724
90.76.165.40 - - [08/Mar/2014:10:54:05]
"GET ../../../root/.bash_history HTTP/1.1" 2005724
90.76.165.40 - - [08/Mar/2014:10:54:04] "GET
index.php?user=<script>Create</script>HTTP/1.1" 200 5724
The security administrator also inspects the following file system locations on the database server using the command 'ls -al /root' drwxrwxrwx 11 root root 4096 Sep 28 22:45 .
drwxr-xr-x 25 root root 4096 Mar 8 09:30 ..
-rws------ 25 root root 4096 Mar 8 09:30 .bash_history
-rw------- 25 root root 4096 Mar 8 09:30 .bash_history
-rw------- 25 root root 4096 Mar 8 09:30 .profile
-rw------- 25 root root 4096 Mar 8 09:30 .ssh
Which of the following attacks was used to compromise the database server and what can the security administrator implement to detect such attacks in the future? (Select TWO).
A. Cross-site scripting
B. Using input validation, ensure the following characters are sanitized: <>
C. SQL injection
D. Update crontab with: find / \( -perm -4000 \) -type f -print0 | xargs -0 ls -l | email.sh
E. Set an account lockout policy
F. Privilege escalation
G. Brute force attack
H. Implement the following PHP directive: $clean_user_input = addslashes($user_input)
Answer: D,F
Explanation:
This is an example of privilege escalation.
Privilege escalation is the act of exploiting a bug, design flaw or configuration oversight in an operating system or software application to gain elevated access to resources that are normally protected from an application or user.
The question states that the web server communicates with the database server via an account with SELECT only privileges. However, the privileges listed include read, write and execute (rwx).
This suggests the privileges have been `escalated'.
Now that we know the system has been attacked, we should investigate what was done to the system.
The command "Update crontab with: find / \( -perm -4000 \) type f print0 | xargs -0 ls l | email.sh" is used to find all the files that are setuid enabled. Setuid means set user ID upon execution. If the setuid bit is turned on for a file, the user executing that executable file gets the permissions of the individual or group that owns the file.
NEW QUESTION: 3
The Klez worm is a mass-mailing worm that exploits a vulnerability to open an executable attachment even in Microsoft Outlook's preview pane. The Klez worm gathers email addresses from the entries of the default Windows Address Book (WAB). Which of the following registry values can be used to identify this worm?
A. HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices
B. HKEY_CURRENT_USER\Software\Microsoft\WAB\WAB4\Wab File Name = "file and pathname of the WAB file"
C. HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
D. HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
Answer: B
NEW QUESTION: 4
Which description of the purpose of activity-based working spaces is true?
A. adoption of personal video and telepresence units
B. for more formal and important discussions and decision making
C. bringing access to information and collaboration tools closer to the point of work
D. faster frequent interaction and collaboration among individuals and teams
Answer: D
Explanation:
Explanation/Reference: