Apryse iText 8.0.2 PdfDocument.java main array index ⚔ [Disputed]

Summaryinfo

A vulnerability was found in Apryse iText 8.0.2 and classified as problematic. Affected is the function main of the file PdfDocument.java. Executing a manipulation can lead to array index. The identification of this vulnerability is CVE-2023-6298. The attack may be launched remotely. Furthermore, there is an exploit available. There are still doubts about whether this vulnerability truly exists. The vendor was contacted early about this disclosure but did not respond in any way. A statement published afterwards explains that the exception is not a vulnerability and the identified CWEs might not apply to the software.

Detailsinfo

A vulnerability classified as problematic was found in Apryse iText 8.0.2. This vulnerability affects the function main of the file PdfDocument.java. The manipulation with an unknown input leads to a array index vulnerability. The CWE definition for the vulnerability is CWE-129. The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array. As an impact it is known to affect availability.

The weakness was shared 11/26/2023. The advisory is shared for download at drive.google.com. This report claims there is an improper validation of array index in Apryse iText library leading to a vulnerability. This is not something we agree with at this point, because it's not clear what kind of exploit we can get. We do confirm that the provided code sample triggers java.lang.ArrayIndexOutOfBoundsException in our Java library and System.IndexOutOfRangeException in C#. But the fact that our code throws an exception is not by itself a vulnerability and no case supporting that this behavior may be exploited has been presented to us. This vulnerability report is linked to the weakness identified as CWE-129 which describes possible exploits in C and C++ programming languages, however iText is a Java and a C# library. See https://kb.itextpdf.com/itext/statement-regarding-cve-2022-24198-and-2023-6298 for more details. This vulnerability was named CVE-2023-6298. Successful exploitation requires user interaction by the victim. Technical details and also a public exploit are known.

It is possible to download the exploit at drive.google.com. It is declared as proof-of-concept. The real existence of this vulnerability is still doubted at the moment. The vendor was contacted early about this disclosure but did not respond in any way. A statement published afterwards explains that the exception is not a vulnerability and the identified CWEs might not apply to the software.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Apryse

Name

• iText

Version

• 8.0.2

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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Submitinfo

Accepted

• Submit #238818: itext7 8.0.2 Array Index Out Of Bounds (by drive.google.com)

Once again VulDB remains the best source for vulnerability data.

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