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7-Zip RCE Vulnerability Let Attackers Execute Remote Code

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A critical security vulnerability has been disclosed in the popular file archiving tool 7-Zip, allowing attackers to execute arbitrary code remotely.

The flaw, identified as CVE-2024-11477, has been attributed to an integer underflow in the Zstandard decompression implementation, which could lead to remote code execution (RCE).

CVE-2024-11477 – Vulnerability Details

The vulnerability, CVE-2024-11477 discovered by the Zero Day Initiative (ZDI) and tracked as ZDI-24-1532 (ZDI-CAN-24346), affects the Zstandard decompression library in 7-Zip.

It arises due to insufficient validation of user-supplied data during the decompression process.

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This flaw can result in an integer underflow, potentially leading to memory corruption and enabling attackers to execute arbitrary code in the context of the current process.

While user interaction is required to exploit this vulnerability—such as opening a specially crafted archive file—the attack vectors can vary depending on how 7-Zip is implemented within a system.

With a CVSS score of 7.8, this vulnerability is classified as high severity. Its exploitation could compromise confidentiality, integrity, and availability, as attackers can execute code with the privileges of the current user.

Both individual users and organizations utilizing 7-Zip are at risk. Given 7-Zip’s widespread use as a free, open-source file archiver, this vulnerability is particularly concerning for systems handling sensitive data.

According to the Zero-Day Initiative report, the 7-Zip development team has addressed this vulnerability in version 24.07.

All users are strongly urged to update to the latest version immediately to mitigate the risks associated with CVE-2024-11477. Failing to update could leave systems vulnerable to potential exploitation.

This vulnerability underscores the importance of regular updates, especially for widely used software like 7-Zip. Users are advised to:

  1. Upgrade to 7-Zip 24.07 or later versions.
  2. Exercise caution when handling untrusted archive files.
  3. Monitor future security advisories for updates and patches.

As cyber threats grow increasingly sophisticated, maintaining up-to-date software is crucial to safeguarding systems and data from exploitation.

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Divya
Divya
Divya is a Senior Journalist at GBhackers covering Cyber Attacks, Threats, Breaches, Vulnerabilities and other happenings in the cyber world.

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