{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/dnsmasq/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Dnsmasq"],"_cs_severities":["critical"],"_cs_tags":["dnsmasq","vulnerability","denial-of-service","code-execution","information-disclosure"],"_cs_type":"advisory","_cs_vendors":["Dnsmasq"],"content_html":"\u003cp\u003eMultiple vulnerabilities exist within dnsmasq, a lightweight, easy-to-configure DNS forwarder and DHCP server. While the specific CVEs are not mentioned, the advisory indicates a broad range of potential impacts, including denial of service (DoS), arbitrary code execution with root privileges, sensitive information disclosure, data manipulation, and redirection of users to malicious domains. The absence of specific CVEs makes targeted mitigation challenging, requiring a more holistic approach to hardening dnsmasq deployments. This widespread impact potential makes dnsmasq a high-value target for attackers seeking to disrupt network services or gain unauthorized access.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker crafts a malicious DNS query or DHCP request to exploit a vulnerability in dnsmasq\u0026rsquo;s parsing logic.\u003c/li\u003e\n\u003cli\u003eThe crafted request triggers a buffer overflow or other memory corruption issue within the dnsmasq process.\u003c/li\u003e\n\u003cli\u003eThe memory corruption allows the attacker to overwrite critical program data or inject malicious code.\u003c/li\u003e\n\u003cli\u003eIf successful, the attacker gains arbitrary code execution with root privileges due to dnsmasq\u0026rsquo;s default operating context.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the gained root access to install a backdoor, modify system configurations, or exfiltrate sensitive data.\u003c/li\u003e\n\u003cli\u003eThe attacker could also manipulate DNS records to redirect users to malicious domains for phishing or malware distribution.\u003c/li\u003e\n\u003cli\u003eAlternatively, the attacker could exhaust dnsmasq resources, causing a denial-of-service condition for legitimate users.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities could lead to a complete compromise of the dnsmasq server, resulting in a denial of service, data breaches, or redirection of users to malicious websites. The number of affected systems depends on the prevalence of dnsmasq deployments in a given network. Due to the broad range of possible impacts, the consequences of successful exploitation could be severe, affecting confidentiality, integrity, and availability of network services.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor dnsmasq process execution for unexpected child processes, indicating potential code execution (see Sigma rule \u003ccode\u003eDetect Dnsmasq Suspicious Child Processes\u003c/code\u003e).\u003c/li\u003e\n\u003cli\u003eInspect network traffic for anomalous DNS queries or DHCP requests that may indicate exploitation attempts (see Sigma rule \u003ccode\u003eDetect Anomalous DNS Queries to Dnsmasq\u003c/code\u003e).\u003c/li\u003e\n\u003cli\u003eRegularly review dnsmasq configurations to ensure they adhere to security best practices, minimizing the attack surface.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-12T10:23:56Z","date_published":"2026-05-12T10:23:56Z","id":"https://feed.craftedsignal.io/briefs/2026-05-dnsmasq-vulns/","summary":"Multiple vulnerabilities in dnsmasq could allow an attacker to cause a denial of service, execute arbitrary code with root privileges, disclose sensitive information, manipulate data, and redirect users to malicious domains.","title":"Multiple Vulnerabilities in dnsmasq","url":"https://feed.craftedsignal.io/briefs/2026-05-dnsmasq-vulns/"}],"language":"en","title":"CraftedSignal Threat Feed — Dnsmasq","version":"https://jsonfeed.org/version/1.1"}