Update Browser Browser Security Updates 1 — Questions and Answers
Question 1: What is a CVE in the context of browser security updates?
- A browser configuration setting
- A Common Vulnerabilities and Exposures identifier for a specific security flaw (Correct answer)
- A type of browser extension
- A certificate validation error
Correct answer: A Common Vulnerabilities and Exposures identifier for a specific security flaw
CVE (Common Vulnerabilities and Exposures) is a standardized system for identifying and cataloguing publicly known security vulnerabilities.
Question 2: What type of browser vulnerability allows an attacker to run arbitrary code on a victim's computer?
- Cross-site scripting (XSS)
- Remote Code Execution (RCE) (Correct answer)
- SQL injection
- DNS spoofing
Correct answer: Remote Code Execution (RCE)
Remote Code Execution vulnerabilities are among the most critical browser flaws as they allow attackers to execute malicious code on the victim's machine.
Question 3: What does 'browser sandboxing' protect against?
- Slow internet connections
- Malicious code escaping the browser and affecting the rest of the operating system (Correct answer)
- Tracking cookies from websites
- Password theft from saved passwords
Correct answer: Malicious code escaping the browser and affecting the rest of the operating system
Sandboxing isolates browser processes from the rest of the OS, limiting the damage if malicious code exploits a browser vulnerability.
Question 4: What is a 'use-after-free' vulnerability that often appears in browser security update notes?
- Using a website after its free trial expires
- A memory corruption bug where freed memory is accessed, potentially allowing code execution (Correct answer)
- Using browser storage after clearing the cache
- Accessing a website after its SSL certificate expires
Correct answer: A memory corruption bug where freed memory is accessed, potentially allowing code execution
Use-after-free is a memory safety bug where a program accesses memory after it has been freed, which attackers can exploit to run malicious code.
Question 5: What is a 'drive-by download' attack that browser security updates help prevent?
- Downloading files from untrusted websites voluntarily
- Malware being automatically downloaded and executed when visiting a malicious or compromised website (Correct answer)
- Downloading browser updates from unofficial sources
- A type of ransomware spread through email
Correct answer: Malware being automatically downloaded and executed when visiting a malicious or compromised website
Drive-by downloads exploit browser vulnerabilities to install malware without user interaction, which security updates patch to prevent.
Question 6: What US government agency publishes the National Vulnerability Database (NVD) that tracks browser CVEs?
- FBI
- NSA
- NIST (National Institute of Standards and Technology) (Correct answer)
- CISA
Correct answer: NIST (National Institute of Standards and Technology)
NIST maintains the NVD, which provides detailed information on CVEs including severity scores and affected software versions.
Update Browser Browser Security Updates 1
What is a CVE in the context of browser security updates?