Description

In FilterCapturedPacket of snoop_logger.cc, there is a possible memory safety issue due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.8",
  "pubDate": "2026-10-05T19:17:23.987Z",
  "pubdate": "2026-10-05T19:17:23.987Z",
  "executiveSummary": "A memory safety vulnerability exists within the FilterCapturedPacket function of snoop_logger.cc, stemming from inadequate input validation during packet processing.\nThis flaw enables a local attacker to potentially trigger memory corruption, which can be leveraged to achieve local escalation of privilege (EoP).\nThe vulnerability is critical as it requires no elevated execution privileges and necessitates zero user interaction for successful exploitation.\nThe scope of impact is confined to the local system, where an attacker could transition from a low-privileged context to a higher-privileged state.\nThe absence of requirements for user intervention makes this vulnerability a significant concern for local security posture, as malicious actors can exploit the flaw autonomously once they have gained initial local access.",
  "technicalDetails": "The root cause of this vulnerability lies in the improper sanitization and validation of packet data within the FilterCapturedPacket function located in snoop_logger.cc. When the logger processes captured network packets, it fails to sufficiently verify the structure, size, or integrity of the incoming data before performing memory operations.\nBecause the function processes data that may be malformed or crafted to exceed buffer constraints, it is susceptible to various memory safety issues, such as buffer overflows, out-of-bounds reads, or memory corruption. The lack of strict bounds checking on inputs passed into internal buffers allows for memory corruption at an addressable location determined by the malformed packet structure.\nThe attack flow begins with the delivery of a specially crafted network packet to the monitoring component. Because the vulnerability resides in the packet processing logic, the system's own logging mechanism acts as the delivery vector for the exploit. An attacker does not need network privileges to target the system if they can generate traffic that interacts with the vulnerable snoop_logger component locally.\nUpon receiving the malicious packet, FilterCapturedPacket attempts to parse the payload. Due to the lack of validation, the parsing logic miscalculates the memory offset or length required for the operation. This leads to the overwriting of adjacent memory segments, which may contain critical system pointers, function return addresses, or object metadata.\nBy precisely controlling the content of the malformed packet, an attacker can manipulate the execution flow of the application. By overwriting sensitive memory addresses, the attacker can hijack control flow, redirecting it to arbitrary code execution or to functions that facilitate privilege escalation. Since the logger component often operates with higher system privileges, the resulting code execution allows the attacker to bypass standard access controls.\nThe impact is significant: the ability to escalate privileges locally implies that an unprivileged user can effectively gain control over the system kernel or higher-privileged processes. This persistent exploitation pattern is facilitated by the synchronous nature of the processing, where the vulnerability is triggered immediately upon packet ingestion, leaving no window for error recovery or mitigation through user intervention."
}