{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/sipp/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":8.4,"id":"CVE-2018-25356"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["SIPp"],"_cs_severities":["high"],"_cs_tags":["buffer-overflow","local-privilege-escalation","cve"],"_cs_type":"threat","_cs_vendors":["sourceforge"],"content_html":"\u003cp\u003eA local buffer overflow vulnerability, CVE-2018-25356, exists in SIPp version 3.6 and earlier. This flaw stems from insufficient bounds checking when handling command-line arguments. Specifically, the \u003ccode\u003e-3pcc\u003c/code\u003e, \u003ccode\u003e-i\u003c/code\u003e, and \u003ccode\u003e-log_file\u003c/code\u003e parameters are susceptible to buffer overflows due to the use of \u003ccode\u003estrcpy\u003c/code\u003e in \u003ccode\u003esipp.cpp\u003c/code\u003e without proper size validation. A local attacker could leverage this vulnerability to crash the SIPp application or, potentially, execute arbitrary code with the privileges of the user running SIPp. The vulnerability was reported in May 2026. Successful exploitation requires local access to the system running the vulnerable SIPp instance.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker gains local access to a system running a vulnerable version of SIPp (3.6 or earlier).\u003c/li\u003e\n\u003cli\u003eThe attacker identifies the SIPp binary location on the system.\u003c/li\u003e\n\u003cli\u003eThe attacker constructs a malicious command-line argument string containing an oversized input value for either the \u003ccode\u003e-3pcc\u003c/code\u003e, \u003ccode\u003e-i\u003c/code\u003e, or \u003ccode\u003e-log_file\u003c/code\u003e parameters.\u003c/li\u003e\n\u003cli\u003eThe attacker executes the SIPp binary with the crafted command-line arguments, triggering the buffer overflow in \u003ccode\u003esipp.cpp\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003estrcpy\u003c/code\u003e function attempts to copy the oversized input into a fixed-size buffer without checking the buffer boundaries.\u003c/li\u003e\n\u003cli\u003eThe buffer overflow overwrites adjacent memory regions, potentially corrupting program data or control flow.\u003c/li\u003e\n\u003cli\u003eThe application crashes due to the memory corruption, or the attacker hijacks the program execution flow.\u003c/li\u003e\n\u003cli\u003eIf successful, the attacker executes arbitrary code with the privileges of the user running SIPp.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability (CVE-2018-25356) could allow a local attacker to crash the SIPp application, leading to a denial-of-service condition. More critically, it could potentially allow the attacker to execute arbitrary code with the privileges of the user running SIPp, potentially leading to privilege escalation and further compromise of the system. Given the nature of SIPp, this could impact VoIP infrastructure testing and simulation environments.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade to a version of SIPp that addresses the buffer overflow vulnerability. Check the project\u0026rsquo;s release page (\u003ca href=\"https://github.com/SIPp/sipp/releases\"\u003ehttps://github.com/SIPp/sipp/releases\u003c/a\u003e) for patched versions.\u003c/li\u003e\n\u003cli\u003eMonitor process creation events for SIPp executions with unusually long command-line arguments, using the Sigma rule provided below.\u003c/li\u003e\n\u003cli\u003eApply host-based intrusion detection system (HIDS) rules to detect attempts to exploit this vulnerability.\u003c/li\u003e\n\u003cli\u003eRestrict local access to systems running SIPp to minimize the attack surface.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-26T13:42:53Z","date_published":"2026-05-26T13:42:53Z","id":"https://feed.craftedsignal.io/briefs/2026-05-sipp-buffer-overflow/","summary":"SIPp 3.6 and earlier contains a local buffer overflow vulnerability (CVE-2018-25356) in command-line argument handling, allowing local attackers to potentially crash the application or execute arbitrary code by supplying oversized input to the -3pcc, -i, or -log_file parameters.","title":"SIPp Local Buffer Overflow Vulnerability (CVE-2018-25356)","url":"https://feed.craftedsignal.io/briefs/2026-05-sipp-buffer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — SIPp","version":"https://jsonfeed.org/version/1.1"}