Executive Summary

[{'type': 'paragraph', 'content': 'CVE-2019-25553 is a denial of service (DoS) vulnerability in CEWE PHOTO IMPORTER version 6.4.3. It allows a local attacker to crash the application by importing a specially crafted, malformed JPG image file that contains an oversized buffer. When the application processes this malformed image during the import workflow, it triggers a crash due to a buffer overflow condition.'}, {'type': 'paragraph', 'content': "The exploit involves creating a JPG file with a very large buffer (for example, 500,000 'A' characters) that causes the application to become unusable when imported."}] [1, 2]

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Impact Analysis

This vulnerability can impact you by causing the CEWE PHOTO IMPORTER application to crash and become unusable during the image import process. This results in a denial of service, preventing normal use of the software.

Since the attack requires local access and no privileges or user interaction, an attacker with local access can disrupt availability of the application easily.

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Compliance Impact

I don't know

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Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by attempting to import a specially crafted malformed JPG file containing an oversized buffer into CEWE Photo Importer version 6.4.3. If the application crashes during the import process, it indicates the presence of the vulnerability.'}, {'type': 'paragraph', 'content': 'A proof-of-concept Python script named "photoimporter.py" is available to generate a malicious "sample.jpg" file with a buffer of 500,000 "A" characters. Running this script and then importing the generated sample.jpg file into the application can be used as a test.'}, {'type': 'list_item', 'content': 'Run the Python script to generate the malicious JPG file: python photoimporter.py'}, {'type': 'list_item', 'content': 'Open CEWE Photo Importer and import the generated sample.jpg file.'}, {'type': 'list_item', 'content': 'Proceed through the import steps by clicking "Import all" and then "Next" twice.'}, {'type': 'paragraph', 'content': 'If the application crashes during this process, the vulnerability is present.'}] [1]

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Mitigation Strategies

The provided resources do not include specific mitigation or patching instructions for this vulnerability.

As an immediate step, avoid importing untrusted or suspicious JPG image files into CEWE Photo Importer version 6.4.3 to prevent triggering the denial of service.

Monitor for updates or patches from the vendor at https://cewe-photoworld.com/ and apply them once available.

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