{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2018-25427/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2018-25427"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Whois 3.11"],"_cs_severities":["critical"],"_cs_tags":["buffer-overflow","rce","CVE-2018-25427"],"_cs_type":"advisory","_cs_vendors":["Arm"],"content_html":"\u003cp\u003eArm Whois 3.11 is susceptible to a stack-based buffer overflow vulnerability. This flaw allows a remote attacker to execute arbitrary code on a vulnerable system. The vulnerability, identified as CVE-2018-25427, arises from insufficient input validation when processing the IP address or domain field. By supplying an oversized input string exceeding 658 bytes, an attacker can overwrite the structured exception handler (SEH) and gain control of program execution. This vulnerability was disclosed on June 1, 2026. Successful exploitation leads to arbitrary code execution within the context of the application.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a vulnerable Arm Whois 3.11 instance.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious input string exceeding 658 bytes. This string includes shellcode designed to execute arbitrary commands on the target system.\u003c/li\u003e\n\u003cli\u003eThe attacker sends the malicious input to the Arm Whois application, targeting the IP address or domain field.\u003c/li\u003e\n\u003cli\u003eThe Arm Whois application receives the input and attempts to process it without proper bounds checking.\u003c/li\u003e\n\u003cli\u003eThe oversized input overflows the stack buffer, overwriting the Structured Exception Handler (SEH) pointer.\u003c/li\u003e\n\u003cli\u003eWhen an exception occurs (triggered intentionally or unintentionally), the application attempts to use the overwritten SEH pointer.\u003c/li\u003e\n\u003cli\u003eThe execution flow is redirected to the attacker-controlled shellcode.\u003c/li\u003e\n\u003cli\u003eThe shellcode executes, granting the attacker arbitrary code execution within the context of the Arm Whois application, potentially leading to full system compromise.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2018-25427 allows remote attackers to execute arbitrary code on systems running Arm Whois 3.11. This could lead to complete system compromise, data theft, or denial of service. Given the severity of the vulnerability (CVSS 9.8), it poses a significant risk to organizations using the affected software. The attacker gains full control of the vulnerable host.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply available patches or upgrade to a supported version of Arm Whois to remediate CVE-2018-25427.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eDetect Arm Whois Buffer Overflow Attempt\u003c/code\u003e to detect attempts to exploit this vulnerability via oversized input.\u003c/li\u003e\n\u003cli\u003eMonitor network traffic for unusually long strings being sent to Arm Whois services, which could indicate exploitation attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-06-01T22:17:07Z","date_published":"2026-06-01T22:17:07Z","id":"https://feed.craftedsignal.io/briefs/2026-06-arm-whois-overflow/","summary":"Arm Whois 3.11 is vulnerable to a stack-based buffer overflow (CVE-2018-25427) allowing remote attackers to execute arbitrary code by providing oversized input to the IP address or domain field.","title":"Arm Whois 3.11 Stack-Based Buffer Overflow Vulnerability (CVE-2018-25427)","url":"https://feed.craftedsignal.io/briefs/2026-06-arm-whois-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — CVE-2018-25427","version":"https://jsonfeed.org/version/1.1"}