{"document":{"category":"csaf_vex","csaf_version":"2.1","notes":[{"category":"summary","text":"Palo Alto Networks PSIRT provided VEX document. This document is autogenerated.","title":"PAN-OS: Integer underflow in the management interface"}],"publisher":{"category":"vendor","name":"Palo Alto Networks","namespace":"https://security.paloaltonetworks.com"},"title":"Palo Alto Networks PSIRT provided VEX document: CVE-2020-2031","distribution":{"text":"Copyright © 2024 Palo Alto Networks. All rights reserved.","tlp":{"label":"CLEAR","url":"https://www.first.org/tlp/"}},"tracking":{"current_release_date":"2026-03-11T22:31:43.962Z","generator":{"date":"2026-03-11T22:31:43.962Z","engine":{"name":"Vulnogram","version":"0.0.9"}},"id":"CVE-2020-2031","initial_release_date":"2020-07-08T16:00:00.000Z","revision_history":[{"number":"1","date":"2020-07-08T09:00:00.000Z","summary":"Initial publication"}],"status":"final","version":"1"}},"product_tree":{"branches":[{"name":"Palo Alto Networks","category":"vendor","branches":[]}]},"vulnerabilities":[{"cve":"CVE-2020-2031","product_status":{"fixed":["PANW-PAN-OS-323"],"known_affected":["PANW-PAN-OS-323"],"known_not_affected":["PANW-PAN-OS-274","PANW-PAN-OS-276"]},"notes":[{"category":"description","text":"An integer underflow vulnerability in the dnsproxyd component of the PAN-OS management interface allows authenticated administrators to issue a command from the command line interface that causes the component to stop responding. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode."}],"references":[{"category":"external","summary":"NVD - CVE-2020-2031","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-2031"},{"category":"self","summary":"Palo Alto Networks Security Advisory CVE-2020-2031","url":"https://security.paloaltonetworks.com/CVE-2020-2031"}],"threats":[{"category":"impact","description":"An integer underflow vulnerability in the dnsproxyd component of the PAN-OS management interface allows authenticated administrators to issue a command from the command line interface that causes the component to stop responding. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode."}],"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":4.9,"baseSeverity":"MEDIUM"},"products":["PANW-PAN-OS-323"]}]}]}