高通過率的CompTIA CS0-003認證是行業領先材料＆可靠的CS0-003：CompTIA Cybersecurity Analyst (CySA+) Certification Exam有了CompTIA CS0-003認證考試的證書就相當於人生有了個新的里程牌，工作將會有很大的提升，相信作為IT行業人士的每個人都很想擁有吧。很多人都在討論說這麼好的一個證書是很難通過的，實際上確實通過率是相當的低。沒有做過任何的努力當然是不容易通過的，畢竟通過CompTIA CS0-003認證考試需要相當過硬的專業知識。我們NewDumps是可以為你提供通過CompTIA CS0-003認證考試捷徑的網站。我們NewDumps有針對CompTIA CS0-003認證考試的培訓工具，可以有效的確保你通過CompTIA CS0-003認證考試，獲得CompTIA CS0-003認證考試證書。而且我們還可以幫你節約很多時間，這樣一個可以花更少時間更少金錢就可以獲得如此有價值的證書的方案對你是非常划算的。 最新的 CompTIA Cybersecurity Analyst CS0-003 免費考試真題 (Q139-Q144):問題 #139
An XSS vulnerability was reported on one of the public websites of a company. The security department confirmed the finding and needs to provide a recommendation to the application owner. Which of the following recommendations will best prevent this vulnerability from being exploited? (Select two).
A. Enable MFA on the website.
B. Take the website offline until it is patched.
C. Configure TLS v1.3 on the website.
D. Implement an IPS in front of the web server.
E. Implement a compensating control in the source code.
F. Fix the vulnerability using a virtual patch at the WAF.
答案：E,F
解題說明：
Comprehensive Detailed To effectively prevent Cross-Site Scripting (XSS) attacks, implementing appropriate security controls within the application code and at the network layer is critical. Here's a breakdown of each option:
A . Implement an IPS in front of the web server
Intrusion Prevention Systems (IPS) are primarily designed to detect and prevent network-based attacks, not application-layer vulnerabilities such as XSS. They do not specifically mitigate XSS threats effectively.
B . Enable MFA on the website
Multi-factor authentication (MFA) strengthens user authentication but does not address XSS, which typically involves injecting malicious scripts rather than compromising user credentials.
C . Take the website offline until it is patched
While this might temporarily mitigate the risk, it is not a practical solution for ongoing operations, especially when effective preventative controls (e.g., WAF rules or code updates) can be implemented without disabling the service.
D . Implement a compensating control in the source code
Implementing security controls at the code level is an effective way to mitigate XSS risks. This can involve proper input validation, output encoding, and utilizing libraries that sanitize user inputs. By addressing the root cause in the source code, developers prevent scripts from being injected or executed in the browser.
E . Configure TLS v1.3 on the website
While TLS v1.3 secures the communication channel, it does not address XSS directly. XSS attacks manipulate client-side scripts, which TLS cannot prevent, as TLS only encrypts data in transit.
F . Fix the vulnerability using a virtual patch at the WAF
Web Application Firewalls (WAFs) can mitigate XSS vulnerabilities by identifying and blocking malicious payloads. Virtual patching at the WAF level provides a temporary fix by preventing exploit attempts from reaching the application, giving developers time to implement a permanent fix in the source code.
Reference:
OWASP XSS Prevention Cheat Sheet: Detailed guidance on encoding, sanitizing, and safe coding practices to prevent XSS.
NIST SP 800-44: Guidelines on Web Security, discussing WAFs and application-layer protections.
CWE-79: Common Weakness Enumeration on Cross-Site Scripting, which outlines ways to address and prevent XSS attacks.
問題 #140
Which of the following phases of the Cyber Kill Chain involves the adversary attempting to establish communication with a successfully exploited target?
A. Command and control
B. Delivery
C. Actions on objectives
D. Exploitation
答案：A
解題說明：
Command and control (C2) is a phase of the Cyber Kill Chain that involves the adversary attempting to establish communication with a successfully exploited target. C2 enables the adversary to remotely control or manipulate the target system or network using various methods, such as malware callbacks, backdoors, botnets, or covert channels. C2 allows the adversary to maintain persistence, exfiltrate data, execute commands, deliver payloads, or spread to other systems or networks.
問題 #141
A security analyst is trying to identify possible network addresses from different source networks belonging to the same company and region. Which of the following shell script functions could help achieve the goal?
A. function w() { a=$(ping -c 1 $1 | awk-F "/" 'END{print $1}') && echo "$1 | $a" }
B. function x() { b=traceroute -m 40 $1 | awk 'END{print $1}') && echo "$1 | $b" }
D. function z() { c=$(geoiplookup$1) && echo "$1 | $c" }
答案：C
解題說明：
Explanation
The shell script function that could help identify possible network addresses from different source networks belonging to the same company and region is:
function y() { dig $(dig -x $1 | grep PTR | tail -n 1 | awk -F ".in-addr" '{print $1}').origin.asn.cymru.com TXT
+short }
This function takes an IP address as an argument and performs two DNS lookups using the dig command. The first lookup uses the -x option to perform a reverse DNS lookup and get the hostname associated with the IP address. The second lookup uses the origin.asn.cymru.com domain to get the autonomous system number (ASN) and other information related to the IP address, such as the country code, registry, or allocation date.
The function then prints the IP address and the ASN information, which can help identify any network addresses that belong to the same ASN or region
問題 #142
A security analyst is performing vulnerability scans on the network. The analyst installs a scanner appliance, configures the subnets to scan, and begins the scan of the network. Which of the following would be missing from a scan performed with this configuration?
A. IP address
B. Operating system version
C. Open ports
D. Registry key values
答案：D
解題說明：
Registry key values would be missing from a scan performed with this configuration, as the scanner appliance would not have access to the Windows Registry of the scanned systems. The Windows Registry is a database that stores configuration settings and options for the operating system and installed applications. To scan the Registry, the scanner would need to have credentials to log in to the systems and run a local agent or script.
The other items would not be missing from the scan, as they can be detected by the scanner appliance without credentials. Operating system version can be identified by analyzing service banners or fingerprinting techniques. Open ports can be discovered by performing a port scan or sending probes to common ports. IP address can be obtained by resolving the hostname or using network discovery tools. https://attack.mitre.org
/techniques/T1112/
問題 #143
A security audit for unsecured network services was conducted, and the following output was generated:
Which of the following services should the security team investigate further? (Select two).
A. 0
B. 1
C. 2
D. 3
E. 4
F. 5
答案：D,E
解題說明：
The output shows the results of a port scan, which is a technique used to identify open ports and services running on a network host. Port scanning can be used by attackers to discover potential vulnerabilities and exploit them, or by defenders to assess the security posture and configuration of their network devices1 The output lists six ports that are open on the target host, along with the service name and version associated with each port. The service name indicates the type of application or protocol that is using the port, while the version indicates the specific release or update of the service. The service name and version can provide useful information for both attackers and defenders, as they can reveal the capabilities, features, and weaknesses of the service.
Among the six ports listed, two are particularly risky and should be investigated further by the security team:
port 23 and port 636.
Port 23 is used by Telnet, which is an old and insecure protocol for remote login and command execution.
Telnet does not encrypt any data transmitted over the network, including usernames and passwords, which makes it vulnerable to eavesdropping, interception, and modification by attackers. Telnet also has many known vulnerabilities that can allow attackers to gain unauthorized access, execute arbitrary commands, or cause denial-of-service attacks on the target host23 Port 636 is used by LDAP over SSL/TLS (LDAPS), which is a protocol for accessing and modifying directory services over a secure connection. LDAPS encrypts the data exchanged between the client and the server using SSL/TLS certificates, which provide authentication, confidentiality, and integrity. However, LDAPS can also be vulnerable to attacks if the certificates are not properly configured, verified, or updated. For example, attackers can use self-signed or expired certificates to perform man-in-the-middle attacks, spoofing attacks, or certificate revocation attacks on LDAPS connections.
Therefore, the security team should investigate further why port 23 and port 636 are open on the target host, and what services are running on them. The security team should also consider disabling or replacing these services with more secure alternatives, such as SSH for port 23 and StartTLS for port 6362
