CVE-2018-25360: AgataSoft Auto PingMaster Buffer Overflow

CVE-2018-25360 Overview

CVE-2018-25360 is a stack-based buffer overflow [CWE-121] in AgataSoft Auto PingMaster 1.5. The flaw resides in the Trace Route host name field of the Windows desktop application. Attackers craft a malicious ping.txt file containing shellcode and jump instructions that overwrite the Structured Exception Handler (SEH) pointer. When a user pastes the file contents into the vulnerable field, the application triggers exception handling and redirects execution to attacker-controlled code.

Exploitation requires local user interaction but yields arbitrary code execution in the application's process context. A public proof-of-concept is documented in Exploit-DB #45151 and the VulnCheck Advisory on AgataSoft Buffer Overflow.

Critical Impact
Successful exploitation allows arbitrary code execution on the host through SEH overwrite, compromising confidentiality, integrity, and availability of the affected system.

Affected Products

AgataSoft Auto PingMaster 1.5
Windows builds bundling AgataSoft Auto PingMaster 1.5
Legacy AgataSoft network utility installations using the vulnerable Trace Route component

Discovery Timeline

2026-05-25 - CVE-2018-25360 published to NVD
2026-05-26 - Last updated in NVD database

Technical Details for CVE-2018-25360

Vulnerability Analysis

The vulnerability is a classic stack-based buffer overflow categorized under [CWE-121]. AgataSoft Auto PingMaster 1.5 copies user-supplied data into a fixed-size stack buffer associated with the Trace Route host name field without enforcing length boundaries. The unchecked copy operation lets attackers write past the buffer, corrupting adjacent stack memory including the SEH chain.

Because the application is a 32-bit Windows binary without modern exploit mitigations applied to the affected module, the SEH overwrite technique remains reliable. Attackers redirect the exception dispatcher to a pop pop ret gadget that pivots execution into the supplied shellcode. The result is arbitrary code execution in the context of the user running the application.

Root Cause

The root cause is the absence of bounds checking when handling input pasted into the Trace Route host name field. The application trusts clipboard-sourced data and copies it into a small fixed-length stack buffer. No SEHOP or SafeSEH protection is enforced on the vulnerable module, leaving the structured exception handler reachable from attacker-controlled stack memory.

Attack Vector

The attack vector is local and requires user interaction. An attacker delivers a crafted ping.txt file containing a long string composed of NOP sleds, shellcode, a near-jump opcode, and a pointer to a pop pop ret instruction sequence. The user opens the file, copies the contents, and pastes them into the Trace Route host name field. Parsing the oversized input overwrites the saved SEH record on the stack. The subsequent exception, triggered by malformed input handling, transfers control to the overwritten handler and executes the embedded shellcode. Full technical details and a working proof-of-concept are documented in Exploit-DB #45151.

Detection Methods for CVE-2018-25360

Indicators of Compromise

Presence of ping.txt or similarly named text files containing long repetitive byte sequences, NOP sleds (\\x90 runs), or shellcode opcodes in user profile directories.
Unexpected child processes spawned by the AgataSoft Auto PingMaster executable, particularly command shells or scripting interpreters.
Application crash events in the Windows Event Log referencing AgataSoft Auto PingMaster with exception codes consistent with access violations or SEH corruption.

Detection Strategies

Monitor process creation events where AgataSoft Auto PingMaster is the parent process and the child is cmd.exe, powershell.exe, rundll32.exe, or other living-off-the-land binaries.
Hunt for file writes by AgataSoft Auto PingMaster outside of expected configuration paths, indicating post-exploitation activity.
Inspect endpoints for clipboard ingestion of large binary payloads followed by application crashes, which suggest SEH overwrite attempts.

Monitoring Recommendations

Enable Windows Event Log collection for Application Error (Event ID 1000) and Windows Error Reporting (Event ID 1001) entries referencing the AgataSoft binary.
Forward endpoint process telemetry to a centralized SIEM or data lake for behavioral correlation across hosts running legacy network utilities.
Track file system creation of ping.txt artifacts in user-writable directories and correlate with subsequent application execution.

How to Mitigate CVE-2018-25360

Immediate Actions Required

Remove AgataSoft Auto PingMaster 1.5 from production endpoints where a vendor patch is not available.
Restrict execution of the AgataSoft binary using application allowlisting controls such as Windows Defender Application Control or AppLocker.
Block delivery of untrusted ping.txt or similar text files at email and web proxy gateways for environments that must retain the application.

Patch Information

No vendor patch is referenced in the available advisories. The AgataSoft Homepage and the VulnCheck Advisory on AgataSoft Buffer Overflow should be reviewed for any updated guidance or successor releases. Until a fixed build is published, treat the application as end-of-life and migrate to a supported network diagnostic tool.

Workarounds

Run the application under a low-privileged, sandboxed user account isolated from sensitive data and credentials.
Enforce system-wide Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) via Exploit Protection in Windows Security to reduce reliability of the SEH overwrite.
Educate users not to paste content from untrusted text files into the Trace Route host name field or any free-form input box in the application.

bash

# Configuration example: enforce Exploit Protection for the vulnerable binary
Set-ProcessMitigation -Name "AutoPingMaster.exe" -Enable DEP,SEHOP,ForceRelocateImages,BottomUp,HighEntropy