Overview
This report details a critical vulnerability, identified as CVE-2025-0081, that is present in the dng_lossless_decoder::HuffDecode function of dng_lossless_jpeg.cpp. The vulnerability can potentially cause a system crash due to uninitialized data, leading to a remote denial of service. It poses a substantial threat to the integrity and availability of the affected systems and requires immediate addressing to prevent any potential system compromise or data leakage.
Vulnerability Summary
CVE ID: CVE-2025-0081
Severity: High (CVSS 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Remote Denial of Service leading to potential system compromise or data leakage
Affected Products
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Product | Affected Versions
dng_lossless_jpeg.cpp | All versions prior to patch
How the Exploit Works
The exploit takes advantage of uninitialized data within the dng_lossless_decoder::HuffDecode function. An attacker can craft a specific payload that when processed by this function, can cause system instability or a crash. The crash occurs due to a lack of proper initialization, which can cause the system to read unallocated memory or perform an operation that the system memory is not prepared for, resulting in a crash and denial of service.
Conceptual Example Code
The exploit might be delivered through a malicious payload embedded in a network request. The following is a conceptual example:
POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/dng_lossless
{ "malicious_payload": "uninitialized_data_trigger" }In this example, the “uninitialized_data_trigger” represents a payload that would trigger the uninitialized data vulnerability in the dng_lossless_decoder::HuffDecode function.
Please note that this is a conceptual representation, and real exploit code may be more complex and specific to the software and vulnerability in question.