CVE-2023-42056: pdf-tools — Fix

Description

PDF-XChange Editor U3D File Parsing Uninitialized Variable Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of PDF-XChange Editor. 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 U3D files. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-20929.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-457 CWE-457

CWE-908 CWE-908

Affected Products

Vendor	Product	Versions
pdf-xchange	pdf-tools	All
pdf-xchange	pdf-xchange_editor	All

References

Advisories & Patches

https://www.tracker-software.com/support/security-bulletins.html https://www.tracker-software.com/support/security-bulletins.html

Other References

https://www.zerodayinitiative.com/advisories/ZDI-23-1364/ https://www.zerodayinitiative.com/advisories/ZDI-23-1364/

Frequently Asked Questions

What is CVE-2023-42056? +

PDF-XChange Editor U3D File Parsing Uninitialized Variable Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of PDF-XChange Editor. 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 U3D files. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-20929. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-42056? +

CVE-2023-42056 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-42056? +

CVE-2023-42056 affects products from pdf-xchange, specifically: pdf-tools, pdf-xchange_editor. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-42056? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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