{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/rsync/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":["rsync"],"_cs_severities":["high"],"_cs_tags":["rsync","vulnerability","privilege-escalation","information-gathering","defense-evasion","impact"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eMultiple vulnerabilities have been identified within Rsync that could be leveraged by a malicious actor to achieve a variety of objectives. Rsync is a widely used utility for synchronizing files and directories between two locations. The vulnerabilities, if successfully exploited, could allow an attacker to escalate their privileges within a system, disclose sensitive information, circumvent existing security measures, or launch a denial-of-service (DoS) attack, disrupting the availability of the service. This combination of potential impacts poses a significant risk to systems utilizing vulnerable versions of Rsync. Defenders should prioritize patching and monitoring of Rsync deployments.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable Rsync instance accessible either locally or remotely.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious input designed to exploit one of the vulnerabilities (e.g., a specially crafted filename to trigger a buffer overflow).\u003c/li\u003e\n\u003cli\u003eThe malicious input is sent to the Rsync service via a standard Rsync operation.\u003c/li\u003e\n\u003cli\u003eIf successful, the exploited vulnerability allows the attacker to execute arbitrary code within the context of the Rsync process.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the code execution to escalate privileges, potentially gaining root or system-level access.\u003c/li\u003e\n\u003cli\u003eWith elevated privileges, the attacker could then access sensitive files and data, leading to information disclosure.\u003c/li\u003e\n\u003cli\u003eAlternatively, the attacker could manipulate Rsync configurations or data structures to bypass security restrictions and gain unauthorized access to other systems or resources.\u003c/li\u003e\n\u003cli\u003eAs another alternative, the attacker triggers a denial-of-service condition by crashing the Rsync service, impacting availability.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities can result in a range of negative consequences. Privilege escalation could allow an attacker to gain full control over a compromised system. Information disclosure could lead to the theft of sensitive data, including credentials, proprietary information, or customer data. Security bypass could allow unauthorized access to critical systems and resources. A denial-of-service attack could disrupt critical business operations and cause significant downtime. The scope of impact depends on the specific vulnerability exploited and the configuration of the Rsync deployment.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInvestigate and apply available patches for Rsync to mitigate the identified vulnerabilities.\u003c/li\u003e\n\u003cli\u003eMonitor Rsync process execution for unexpected command-line arguments or file access patterns using the provided Sigma rules.\u003c/li\u003e\n\u003cli\u003eImplement strong access controls and authentication mechanisms to limit exposure to unauthorized users.\u003c/li\u003e\n\u003cli\u003eRegularly review Rsync configurations to ensure they adhere to security best practices.\u003c/li\u003e\n\u003cli\u003eImplement network segmentation to limit the blast radius of a potential compromise.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-20T11:48:10Z","date_published":"2026-05-20T11:48:10Z","id":"https://feed.craftedsignal.io/briefs/2026-05-rsync-multiple-vulns/","summary":"Multiple vulnerabilities in Rsync could be exploited by an attacker to elevate privileges, disclose information, bypass security precautions, and perform a denial of service attack.","title":"Multiple Vulnerabilities in Rsync","url":"https://feed.craftedsignal.io/briefs/2026-05-rsync-multiple-vulns/"}],"language":"en","title":"CraftedSignal Threat Feed — Rsync","version":"https://jsonfeed.org/version/1.1"}