CVE-2024-11477
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.
How to fix CVE-2024-11477
To remediate CVE-2024-11477, upgrade the affected package to a fixed version below.
- —upgrade to 24.07+dfsg-1 or later
Is CVE-2024-11477 being exploited?
Moderate — EPSS is 44.2%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- from 0, < 24.07+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |