7-Zip up to 24.01 Zstandard Decompression integer underflow

Summaryinfo

A vulnerability classified as critical has been found in 7-Zip. The impacted element is an unknown function of the component Zstandard Decompression Handler. This manipulation causes integer underflow. This vulnerability is registered as CVE-2024-11477. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in 7-Zip and classified as critical. Affected by this vulnerability is some unknown processing of the component Zstandard Decompression Handler. The manipulation with an unknown input leads to a integer underflow vulnerability. The CWE definition for the vulnerability is CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE 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.

It is possible to read the advisory at zerodayinitiative.com. This vulnerability is known as CVE-2024-11477 since 11/19/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211725 (7-Zip < 24.07 RCE (ZDI-24-1532)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 24.07 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (211725). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• File Compression Software

Name

• 7-Zip

Version

• 3.13
• 4.20
• 4.23
• 4.24
• 4.25
• 4.26
• 4.26 Beta
• 4.27
• 4.28
• 4.29
• 4.30
• 4.31
• 4.32
• 4.33
• 4.34
• 4.35
• 4.36
• 4.37
• 4.38
• 4.39
• 4.40
• 4.41
• 4.42
• 4.43
• 4.44
• 4.45
• 4.46
• 4.47
• 4.48
• 4.49
• 4.50
• 4.51
• 4.52
• 4.53
• 4.54
• 4.55
• 4.56
• 15.14
• 16.00
• 18.03
• 23.01
• 24.01

CPE 2.3info

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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