{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2019-25607/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["buffer-overflow","privilege-escalation","cve-2019-25607"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eAxessh 4.2, a software of unknown purpose from labf.com, is susceptible to a stack-based buffer overflow vulnerability (CVE-2019-25607). This vulnerability was reported on March 22, 2026. A local attacker can exploit this flaw by providing an overly long filename for the log file, overflowing a buffer of 214 bytes. Successful exploitation allows the attacker to overwrite the instruction pointer and execute arbitrary code with system privileges. This poses a significant risk to systems running Axessh 4.2, as it allows for local privilege escalation and potential system compromise. The vulnerability is present due to insufficient bounds checking on the length of the provided log filename.\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 Axessh 4.2.\u003c/li\u003e\n\u003cli\u003eThe attacker identifies the logging functionality within Axessh 4.2.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts an excessively long filename, exceeding 214 bytes.\u003c/li\u003e\n\u003cli\u003eThe attacker provides the malicious filename as input for the log file name.\u003c/li\u003e\n\u003cli\u003eAxessh 4.2 attempts to write the log file with the attacker-controlled name.\u003c/li\u003e\n\u003cli\u003eThe excessively long filename overflows the buffer on the stack.\u003c/li\u003e\n\u003cli\u003eThe buffer overflow overwrites the instruction pointer.\u003c/li\u003e\n\u003cli\u003eThe attacker gains arbitrary code execution with the privileges of the Axessh process.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability allows a local attacker to execute arbitrary code with system privileges. This could lead to complete system compromise, including data theft, installation of malware, or denial of service. The CVSS v3.1 score of 8.4 indicates a high severity. Due to the nature of local privilege escalation, the impact is limited to systems where an attacker already has a foothold.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply any available patches or updates for Axessh 4.2 provided by the vendor (check \u003ca href=\"http://www.labf.com\"\u003ehttp://www.labf.com\u003c/a\u003e).\u003c/li\u003e\n\u003cli\u003eMonitor process creation events for suspicious processes spawned by Axessh (use the process_creation category).\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule to detect potential exploitation attempts by monitoring for processes that create log files with unusually long names.\u003c/li\u003e\n\u003cli\u003eBlock access to the identified URLs associated with the exploit (\u003ca href=\"http://www.labf.com\"\u003ehttp://www.labf.com\u003c/a\u003e, \u003ca href=\"https://www.exploit-db.com/exploits/46858\"\u003ehttps://www.exploit-db.com/exploits/46858\u003c/a\u003e) at the network perimeter.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-03-23T12:00:00Z","date_published":"2026-03-23T12:00:00Z","id":"/briefs/2026-03-axessh-buffer-overflow/","summary":"Axessh 4.2 is vulnerable to a stack-based buffer overflow in the log file name field, allowing local attackers to execute arbitrary code by supplying an excessively long filename.","title":"Axessh 4.2 Stack-Based Buffer Overflow Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-03-axessh-buffer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2019-25607","version":"https://jsonfeed.org/version/1.1"}