ZERO-DAY VULNERABILITY (Syllabus: GS Paper 3– Cyber Security)

News-CRUX-10     14th May 2024        
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Context: Google Chrome has been hit with another zero-day vulnerability, which has set the alarm bells ringing among users and cyber experts.

Zero-day Vulnerability

  • About: It refers to a system or software vulnerability that is unknown to the vendor and lacks any available patch or mitigation.
  • Zero-Day Attack: This term denotes an attack occurring immediately after the vulnerability's discovery, leaving no time for mitigation.
  • Zero-Day Exploit: It describes the method hackers employ to exploit the vulnerability, often via malware, to execute an attack.
  • Nature of Attacks: Threat actors develop and release malware promptly to target ZDVs, initiating zero-day attacks before security professionals and developers can respond with patches.
  • zero-day vulnerabilities pose a higher risk to users for the following reasons:

o Cybercriminals race to exploit these vulnerabilities to cash in on their schemes

o Vulnerable systems are exposed until a patch is issued by the vendor.

  • Example: In April 2020, a zero-day vulnerability was discovered in Zoom that made it possible for attackers to gain remote access to users’ computers under certain conditions.