{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/crun/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":["crun"],"_cs_severities":["high"],"_cs_tags":["privilege-escalation","linux"],"_cs_type":"advisory","_cs_vendors":["Red Hat"],"content_html":"\u003cp\u003eA vulnerability exists within the crun package in Red Hat Enterprise Linux that could allow a local attacker to escalate their privileges on the system. While the specific technical details of the vulnerability are not provided, successful exploitation would grant elevated permissions, potentially up to root. This vulnerability impacts systems where crun is installed and accessible to local users. It is crucial to investigate the affected versions and apply the necessary patches to mitigate the risk of unauthorized privilege escalation.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker gains initial access to the target RHEL system with limited user privileges.\u003c/li\u003e\n\u003cli\u003eAttacker identifies the vulnerable version of \u003ccode\u003ecrun\u003c/code\u003e installed on the system.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious input or utilizes an exploit specific to the identified \u003ccode\u003ecrun\u003c/code\u003e vulnerability.\u003c/li\u003e\n\u003cli\u003eAttacker executes the malicious input/exploit using \u003ccode\u003ecrun\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eThe vulnerable \u003ccode\u003ecrun\u003c/code\u003e binary processes the malicious input, triggering the privilege escalation.\u003c/li\u003e\n\u003cli\u003eThe attacker\u0026rsquo;s process now runs with elevated privileges (e.g., root).\u003c/li\u003e\n\u003cli\u003eAttacker leverages the elevated privileges to perform unauthorized actions, such as installing malware, modifying system configurations, or accessing sensitive data.\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 gain elevated privileges on the affected system. This can lead to complete system compromise, including unauthorized access to sensitive data, modification of system configurations, and installation of malicious software. The impact is significant for systems handling sensitive information or critical infrastructure components.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInvestigate the \u003ccode\u003ecrun\u003c/code\u003e version installed on all RHEL systems and compare them to Red Hat\u0026rsquo;s security advisories for known vulnerable versions.\u003c/li\u003e\n\u003cli\u003eApply the necessary patches provided by Red Hat to remediate the vulnerability in \u003ccode\u003ecrun\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eMonitor process execution for unexpected or unauthorized use of the \u003ccode\u003ecrun\u003c/code\u003e binary, as highlighted in the Sigma rules below.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-06-01T07:25:47Z","date_published":"2026-06-01T07:25:47Z","id":"https://feed.craftedsignal.io/briefs/2026-06-rhel-crun-privesc/","summary":"A local attacker can exploit a vulnerability in Red Hat Enterprise Linux (crun) to escalate their privileges, potentially gaining root access.","title":"Red Hat Enterprise Linux (crun) Privilege Escalation Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-06-rhel-crun-privesc/"}],"language":"en","title":"CraftedSignal Threat Feed — Crun","version":"https://jsonfeed.org/version/1.1"}