CVE-2024-11477: 7-Zip Zstandard Decompression Integer Underflow Remote Code Execution Vulnerability
Description
7-Zip Zstandard Decompression Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.
The specific flaw exists within the implementation of Zstandard decompression. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24346.
Classification
CVE ID: CVE-2024-11477
CVSS Base Severity: HIGH
CVSS Base Score: 7.8
Affected Products
Vendor: 7-Zip
Product: 7-Zip
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 16.33% (scored less or equal to compared to others)
EPSS Date: 2025-02-03 (when was this score calculated)