Description

Ixia IxVeriWave and Vector Informatik BLF file parser crashes in 4.6.0 to 4.6.7 allows denial of service on Windows

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.6",
  "pubDate": "2026-08-13T09:17:12.983Z",
  "pubdate": "2026-08-13T09:17:12.983Z",
  "executiveSummary": "This vulnerability involves a denial of service condition affecting the Vector Informatik BLF file parser integrated within Ixia IxVeriWave. Specifically, versions 4.6.0 through 4.6.7 of the affected software are susceptible to application crashes when processing maliciously crafted Binary Logging Format (BLF) files.\nThe primary impact of this flaw is the termination of the application process, leading to a complete denial of service for the affected component on Windows operating systems. This disruption can halt testing workflows, invalidate verification pipelines, and require manual intervention to restart the crashed software.\nThe vulnerability requires an attacker to deliver a specially formatted BLF file to the victim or induce the target application to parse the malicious file. Exploitation typically relies on user interaction, such as opening or importing the corrupted capture file within the vulnerable software environment. No specific authentication or privilege escalation capabilities are inherently granted by this vulnerability, as its scope is strictly limited to application availability disruption.",
  "technicalDetails": "The root cause of the denial of service vulnerability stems from improper input validation and memory handling within the BLF file parser component utilized by Ixia IxVeriWave. When parsing specially crafted Binary Logging Format files in versions 4.6.0 to 4.6.7, the parser encounters structural anomalies or malformed header fields that it fails to handle gracefully.\nThe vulnerable component is the file parsing engine responsible for ingesting Vector Informatik BLF logging data on Windows systems. Exploitation occurs step-by-step as follows: first, an attacker generates or modifies a BLF file to include corrupt data structures, invalid length specifiers, or recursive pointers. Second, the crafted file is supplied to a user or system running the vulnerable software. Third, when the application attempts to read, parse, or index the contents of the file, the parsing engine encounters an unhandled exception, such as an out-of-bounds memory read or write, a null pointer dereference, or an infinite loop resulting in resource exhaustion.\nBecause the exception occurs within the context of the file parsing routine without adequate try-catch blocks or bounds-checking mechanisms, the Windows operating system terminates the process to prevent further memory corruption. This payload behavior directly precipitates the denial of service condition. The attack vector requires local file processing or user interaction to ingest the malicious payload. No network exposure is inherently required unless the file is fetched automatically via a network-connected parsing pipeline. The post-exploitation impact is constrained strictly to application availability, as remote code execution is not indicated by the nature of the crash."
}