CVE-2024-11477CWE-191

7-Zip Zstandard Decompression Integer Underflow Remote Code Execution Vulnerability

High · published November 22, 2024

CVSS v3.0
7.8
EPSS
22%
Percentile
97.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.0
7.8 · HIGH
Vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.22390 · 97.7th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2024-11-22T20:22Z
EPSS history
Timeline
  • 22 NOV 20:22Z
    7-Zip Zstandard Decompression Integer Underflow Remote Code Execution Vulnerability
    cvelistv5