Remote Code Execution Vulnerability in 7-Zip's Decompression Implementation

CVE-2024-11477

What is CVE-2024-11477?

CVE-2024-11477 is a critical remote code execution vulnerability found in the 7-Zip file compression utility, particularly within its implementation of the Zstandard decompression algorithm. This flaw arises from improper validation of user input, leading to an integer underflow condition during the decompression process. This vulnerability allows remote attackers to execute arbitrary code on affected systems, posing a dire threat to organizations utilizing 7-Zip for file management and compression tasks.

The exploitation of CVE-2024-11477 requires an attacker to craft specially designed compressed files that can exploit the decompression flaw when processed by the software. If successfully executed, this can result in malicious code executing within the context of the current process, potentially allowing the attacker to gain unauthorized access to the system or escalated privileges. Given that 7-Zip is widely used across various sectors for file handling, the impact of this vulnerability may reach substantial levels, endangering sensitive data and critical system integrity.

Potential impact of CVE-2024-11477

1. Remote Code Execution: The most significant impact of CVE-2024-11477 is the potential for remote code execution, which enables attackers to run arbitrary code on vulnerable installations of 7-Zip. This could lead to unauthorized access, data breach, or system compromise.

2. Data Integrity Threat: Successful exploitation can compromise the integrity of data handled by affected systems. Malicious actors may alter, delete, or exfiltrate sensitive information, which could severely disrupt business operations and result in financial loss.

3. Supply Chain Risks: Organizations relying on 7-Zip may inadvertently become vectors for malware distribution, especially if malicious files are shared or exchanged. This vulnerability creates an avenue for broader attacks within an organization's supply chain, potentially affecting partners and customers connected through file-sharing practices.

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