{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/voip/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["asterisk","voip","code-execution","dos","information-disclosure"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eMultiple vulnerabilities exist within Asterisk and Digium Certified Asterisk, potentially allowing a remote, authenticated attacker to perform several malicious actions. These actions include arbitrary code execution, which could lead to complete system compromise, denial-of-service (DoS) attacks, rendering the system unusable, and sensitive information disclosure, potentially leading to further exploitation. The scope of these vulnerabilities encompasses any system running a vulnerable version of Asterisk or Digium Certified Asterisk. Defenders should prioritize identifying and patching affected systems to prevent potential exploitation.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker authenticates to the Asterisk or Digium Certified Asterisk system using valid credentials.\u003c/li\u003e\n\u003cli\u003eThe attacker exploits a vulnerability allowing them to inject malicious code into a configuration file.\u003c/li\u003e\n\u003cli\u003eThe Asterisk process parses the modified configuration file, executing the injected code.\u003c/li\u003e\n\u003cli\u003eThe injected code establishes a reverse shell connection back to the attacker\u0026rsquo;s system.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the reverse shell to gain interactive access to the Asterisk server.\u003c/li\u003e\n\u003cli\u003eThe attacker escalates privileges using publicly available exploits or further vulnerabilities within the system.\u003c/li\u003e\n\u003cli\u003eThe attacker installs persistent backdoors or modifies system configurations for long-term access.\u003c/li\u003e\n\u003cli\u003eThe attacker exfiltrates sensitive data or causes a denial-of-service condition by crashing critical processes.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities could have severe consequences. An attacker could gain complete control over the affected Asterisk or Digium Certified Asterisk systems. This could lead to disruption of communication services, exfiltration of sensitive call data, or the use of the compromised system as a launchpad for further attacks within the network. The impact includes potential financial losses, reputational damage, and legal liabilities due to data breaches.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReview Asterisk and Digium Certified Asterisk logs for suspicious configuration changes using the provided Sigma rule \u003ccode\u003eAsterisk Configuration Change Detection\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eImplement strong authentication and access controls to limit the potential for unauthorized access as a prerequisite for exploitation.\u003c/li\u003e\n\u003cli\u003eContinuously monitor Asterisk processes for unexpected outbound network connections using the Sigma rule \u003ccode\u003eAsterisk Suspicious Outbound Connection\u003c/code\u003e.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-03-25T10:21:05Z","date_published":"2026-03-25T10:21:05Z","id":"/briefs/2024-05-asterisk-vulns/","summary":"An authenticated remote attacker can exploit vulnerabilities in Asterisk and Digium Certified Asterisk to achieve arbitrary code execution, denial of service, or information disclosure.","title":"Asterisk and Digium Certified Asterisk Vulnerabilities","url":"https://feed.craftedsignal.io/briefs/2024-05-asterisk-vulns/"}],"language":"en","title":"CraftedSignal Threat Feed — Voip","version":"https://jsonfeed.org/version/1.1"}