7-zip up to 18.03 SquashFS File Parser out-of-bounds write

Summaryinfo

A vulnerability categorized as critical has been discovered in 7-zip. The impacted element is an unknown function of the component SquashFS File Parser. The manipulation results in out-of-bounds write. This vulnerability is reported as CVE-2023-40481. The attack can be launched remotely. No exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in 7-zip (File Compression Software). Affected is an unknown functionality of the component SquashFS File Parser. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.

The weakness was disclosed 08/23/2023 as ZDI-23-1164. The advisory is available at zerodayinitiative.com. This vulnerability is traded as CVE-2023-40481 since 08/14/2023. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 314237 (Debian dla-4576 : p7zip - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 23.00 eliminates this vulnerability. The upgrade is hosted for download at sourceforge.net. Applying a patch is able to eliminate this problem. The best possible mitigation is suggested to be patching the affected component. Old 7-Zip vulnerability. Seems that the patch was missed.

The vulnerability is also documented in the vulnerability database at Tenable (314237). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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