CVE-2018-25356

HIGH

SIPp 3.6 Local Buffer Overflow via Command-line Arguments

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-25356. PoCs published by Fakhri Zulkifli.

AI-analyzed exploit summary This PoC demonstrates a local buffer overflow in SIPp 3.6-dev by passing a long string (300 'A's) to command-line arguments (-3pcc, -i, -log_file), triggering a strcpy-based overflow. The crash occurs in main() due to unsafe handling of user-supplied input.

Description

SIPp 3.6 and earlier contains a local buffer overflow vulnerability in command-line argument handling that allows local attackers to crash the application or execute arbitrary code. Attackers can trigger the vulnerability by supplying oversized input to the -3pcc, -i, or -log_file parameters, causing strcpy to write beyond buffer boundaries in sipp.cpp.

Exploits (1)

exploitdb WORKING POC
by Fakhri Zulkifli · textdoslinux
https://www.exploit-db.com/exploits/44962

This PoC demonstrates a local buffer overflow in SIPp 3.6-dev by passing a long string (300 'A's) to command-line arguments (-3pcc, -i, -log_file), triggering a strcpy-based overflow. The crash occurs in main() due to unsafe handling of user-supplied input.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: SIPp 3.6-dev and earlier
No auth needed
Prerequisites: local access to the SIPp binary
devstral-2 · analyzed May 24, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit exploit
ExploitDB-44962
https://www.exploit-db.com/exploits/44962
Product product
Official Product Homepage
http://sipp.sourceforge.net/
Product product
Product Reference
https://github.com/SIPp/sipp/releases
Third Party Advisory third-party-advisory
VulnCheck Advisory: SIPp 3.6 Local Buffer Overflow via Command-line Arguments
https://www.vulncheck.com/advisories/sipp-local-buffer-overflow-via-command-line-arguments

Scores

CVSS v3 8.4
EPSS 0.0020
EPSS Percentile 9.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-120
Status published
Products (1)
Sipp/SIPp < 3.6
Published May 23, 2026
Tracked Since May 24, 2026