CVE-2024-11477
Published: 22 November 2024
Summary
CVE-2024-11477 is a high-severity Wrap or Wraparound (CWE-191) vulnerability in 7-Zip 7-Zip. Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 2.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
This vulnerability is an integer underflow in the Zstandard decompression implementation within 7-Zip that can lead to remote code execution. The flaw stems from insufficient validation of user-supplied data, allowing an underflow condition prior to a memory write operation. It affects installations of 7-Zip and was originally reported as ZDI-CAN-24346.
Remote attackers can exploit the issue by supplying a malicious archive or data stream that triggers Zstandard decompression through the affected library. Successful exploitation grants arbitrary code execution in the context of the current process, with a CVSS 3.1 score of 7.8 reflecting local access requirements combined with no privileges and user interaction.
Public advisories from the Zero Day Initiative and NetApp reference the vulnerability and direct users to vendor updates for affected 7-Zip versions. The associated EPSS score has remained flat at its peak value of 0.4423 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-34129
Vulnerability details
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…
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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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.