CVE-2025-2474: BlackBerry QNX SDP DOS Vulnerability

CVE-2025-2474 Overview

CVE-2025-2474 is an out-of-bounds write vulnerability affecting the PCX image codec in BlackBerry QNX Software Development Platform (SDP). This memory corruption flaw could allow an unauthenticated attacker to cause a denial-of-service condition or execute arbitrary code in the context of the process using the image codec. Given the widespread use of QNX in embedded systems, automotive applications, and industrial control systems, this vulnerability poses significant risks to critical infrastructure.

Critical Impact
Unauthenticated remote attackers can achieve code execution or denial of service by exploiting the PCX image codec vulnerability, potentially compromising embedded systems and critical infrastructure running QNX.

Affected Products

BlackBerry QNX Software Development Platform 7.0
BlackBerry QNX Software Development Platform 7.1
BlackBerry QNX Software Development Platform 8.0

Discovery Timeline

2025-06-10 - CVE-2025-2474 published to NVD
2025-12-01 - Last updated in NVD database

Technical Details for CVE-2025-2474

Vulnerability Analysis

This vulnerability is classified as CWE-787 (Out-of-bounds Write), a memory corruption issue that occurs when the PCX image codec writes data outside the boundaries of allocated memory buffers. The flaw exists in how the codec processes malformed or specially crafted PCX image files, allowing attackers to corrupt adjacent memory regions.

When processing PCX images, the codec fails to properly validate image dimensions or color depth parameters before writing pixel data to memory. An attacker can craft a malicious PCX file with manipulated header values that cause the codec to write beyond the allocated buffer, potentially overwriting critical data structures or function pointers.

The network-accessible attack vector combined with no required privileges or user interaction makes this vulnerability particularly dangerous for systems that automatically process images from untrusted sources, such as media servers, content management systems, or embedded devices with network-facing image processing capabilities.

Root Cause

The root cause of CVE-2025-2474 lies in insufficient bounds checking within the PCX image decoder implementation. The codec does not adequately validate that the image dimensions specified in the PCX header correspond to the actual allocated buffer size before performing write operations. This allows crafted PCX files with inconsistent or malicious header values to trigger out-of-bounds memory writes during image decoding.

Attack Vector

The vulnerability can be exploited remotely over a network without authentication. An attacker can deliver a maliciously crafted PCX image file to a target system running vulnerable QNX SDP software. When the image codec processes this file—whether through direct user action, automated processing pipelines, or application-level image handling—the out-of-bounds write occurs.

Successful exploitation could result in:

Denial of Service: Crashing the process or system by corrupting critical memory structures
Code Execution: Overwriting function pointers or return addresses to redirect execution to attacker-controlled code

The attack does not require user interaction or special privileges, making it suitable for automated exploitation scenarios against exposed QNX-based systems.

Detection Methods for CVE-2025-2474

Indicators of Compromise

Unexpected crashes or segmentation faults in processes utilizing the PCX image codec
Anomalous PCX files with malformed headers or unusual dimension values in system logs
Memory corruption artifacts or core dumps indicating out-of-bounds write operations
Unusual network traffic delivering PCX image files to QNX-based systems

Detection Strategies

Monitor for crashes in image processing components on QNX systems, particularly those handling PCX format
Implement file inspection rules to detect PCX files with suspicious header values or dimension mismatches
Deploy memory protection mechanisms to detect out-of-bounds write attempts
Use SentinelOne's behavioral analysis to identify exploitation attempts targeting memory corruption vulnerabilities

Monitoring Recommendations

Enable verbose logging for image processing operations on QNX SDP deployments
Monitor network traffic for unusual PCX file transfers to embedded systems
Implement alerting for process crashes or abnormal terminations in image codec components
Review system integrity regularly for signs of memory corruption or unauthorized code execution

How to Mitigate CVE-2025-2474

Immediate Actions Required

Update all affected QNX SDP installations to the latest patched versions
Restrict network access to systems running vulnerable QNX SDP versions where immediate patching is not feasible
Disable or remove PCX image codec functionality if not required by your application
Implement network segmentation to isolate QNX-based systems from untrusted networks

Patch Information

BlackBerry has released security updates addressing this vulnerability. Administrators should consult the BlackBerry Support Article for detailed patch instructions and download links for QNX SDP versions 7.0, 7.1, and 8.0.

Workarounds

Block PCX image files at network boundaries using content filtering
Disable automatic image processing features on affected systems
Implement application-level input validation to reject malformed PCX files before codec processing
Use application sandboxing to limit the impact of potential code execution

bash

# Example: Network filtering to block PCX files (adjust for your environment)
# Block incoming PCX files at the firewall level
iptables -A INPUT -m string --algo bm --hex-string "|0A 00|" -j DROP

# Alternatively, configure web application firewalls to filter PCX content types
# Consult your specific WAF documentation for implementation details