Description

In multiple functions of PduParser.java, there is a possible out of bounds read due to a missing bounds check. This could lead to a remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.5",
  "pubDate": "2026-10-05T19:17:23.770Z",
  "pubdate": "2026-10-05T19:17:23.770Z",
  "executiveSummary": "A critical out-of-bounds read vulnerability has been identified within multiple functions of the PduParser.java component. This vulnerability stems from a failure to perform adequate boundary validation during the parsing of PDU (Protocol Data Unit) data structures.\nThe flaw allows an attacker to trigger a memory read operation outside the intended memory buffer, which can be exploited to cause a denial-of-service (DoS) condition on the affected system. The vulnerability is highly severe because it does not require user interaction, specific execution privileges, or prior authentication to initiate the exploit.\nThe lack of bounds checking presents a significant risk to system availability, as a maliciously crafted PDU packet can cause the service responsible for parsing such data to crash or become unresponsive upon processing. Because the attack surface is exposed to incoming network traffic without requiring legitimate session establishment, the vulnerability poses a substantial threat to remote systems implementing the affected PduParser.java module.",
  "technicalDetails": "The root cause of this vulnerability lies in the improper handling of buffer offsets and length variables within the logic of PduParser.java. Specifically, the parser fails to validate the size of input data against the allocated buffer limits before initiating read operations. When the parser receives a crafted PDU payload containing field-length values that exceed the actual buffer size, the internal pointer logic may advance beyond the authorized memory segment.\nThe exploitation process begins when the system receives a malicious PDU packet. Upon reaching the parsing stage in PduParser.java, the application attempts to access data fields based on headers or length parameters provided within the packet itself. Due to the absence of explicit bounds checking, the application reads memory addresses outside the intended memory block. In many runtime environments, this operation leads to memory access violations or segmentation faults.\nThe attack flow is entirely network-based. An attacker can transmit an unauthenticated, specially crafted PDU over the transport protocol utilized by the system. Once the PduParser.java component begins processing this input, the vulnerable functions execute with the attacker-controlled length parameters. By specifying an offset or length that forces an out-of-bounds read, the attacker causes the application to consume data it should not access, triggering an immediate exception that results in a service crash. As this process does not require any interaction from a user or specific elevated permissions, the attack vector is classified as remote and unauthenticated.\nThe post-exploitation impact is primarily focused on the denial of service. The resulting crash terminates the service responsible for PDU parsing, rendering the affected service unavailable to legitimate users. While the primary identified impact is availability, out-of-bounds read vulnerabilities can sometimes be leveraged as an information disclosure primitive in environments where the memory contents are leaked back to the attacker or influence subsequent execution paths, although the immediate concern here is the stability of the host process."
}