CVE-2021-31440
Vulnerability data via CVEDB (Shodan)
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.11.15. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs prior to executing them. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-13661.
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
vuln:CVE-2021-31440product:"Netapp Cloud Backup"http.html:"Cloud Backup"More intel sources (5)
vuln:CVE-2021-31440vulnerabilities.cve_id: CVE-2021-31440CVE-2021-31440CVE-2021-31440"CVE-2021-31440" exploit -site:nvd.nist.gov