{"document":{"category":"csaf_vex","csaf_version":"2.1","notes":[{"category":"summary","text":"Palo Alto Networks PSIRT provided VEX document. This document is autogenerated.","title":"NTP Vulnerabilities"}],"publisher":{"category":"vendor","name":"Palo Alto Networks","namespace":"https://security.paloaltonetworks.com"},"title":"Palo Alto Networks PSIRT provided VEX document: PAN-SA-2016-0019","distribution":{"text":"Copyright © 2024 Palo Alto Networks. All rights reserved.","tlp":{"label":"CLEAR","url":"https://www.first.org/tlp/"}},"tracking":{"current_release_date":"2026-07-28T10:49:29.914Z","generator":{"date":"2026-07-28T10:49:29.914Z","engine":{"name":"Vulnogram","version":"0.0.9"}},"id":"PAN-SA-2016-0019","initial_release_date":"2016-08-15T18:00:00.000Z","revision_history":[{"number":"1","date":"2026-07-28T03:49:29.000Z","summary":"Initial release"}],"status":"final","version":"1"}},"product_tree":{"branches":[{"name":"Palo Alto Networks","category":"vendor","branches":[{"name":"PAN-OS","category":"product_name","branches":[{"category":"product_version_range","name":"vers:generic/PAN-OS<=5.0.19","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-440"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=5.0.20","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-441"}},{"category":"product_version_range","name":"vers:generic/PAN-OS<=5.1.12","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-442"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=5.1.13","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-443"}},{"category":"product_version_range","name":"vers:generic/PAN-OS<=6.0.1","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-731"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=6.0.15","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-445"}},{"category":"product_version_range","name":"vers:generic/PAN-OS<=6.1.12","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-452"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=6.1.13","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-453"}},{"category":"product_version_range","name":"vers:generic/PAN-OS<=7.0.8","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-455"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=7.0.9","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-729"}},{"category":"product_version_range","name":"vers:generic/PAN-OS<=7.1.3","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-456"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=7.1.4","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-457"}}]}]}]},"vulnerabilities":[{"cve":"CVE-2015-8158","product_status":{"fixed":["PANW-PAN-OS-441","PANW-PAN-OS-443","PANW-PAN-OS-445","PANW-PAN-OS-453","PANW-PAN-OS-729","PANW-PAN-OS-457"],"known_affected":["PANW-PAN-OS-440","PANW-PAN-OS-442","PANW-PAN-OS-731","PANW-PAN-OS-452","PANW-PAN-OS-455","PANW-PAN-OS-456"]},"notes":[{"category":"description","text":"The getresponse function in ntpq in NTP versions before 4.2.8p9 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (infinite loop) via crafted packets with incorrect values."}],"references":[{"category":"external","summary":"NVD - CVE-2015-8158","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8158"},{"category":"self","summary":"Palo Alto Networks Security Advisory PAN-SA-2016-0019","url":"https://security.paloaltonetworks.com/PAN-SA-2016-0019"}],"threats":[{"category":"impact","description":"The getresponse function in ntpq in NTP versions before 4.2.8p9 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (infinite loop) via crafted packets with incorrect values."}]},{"cve":"CVE-2015-8138","product_status":{"fixed":["PANW-PAN-OS-441","PANW-PAN-OS-443","PANW-PAN-OS-445","PANW-PAN-OS-453","PANW-PAN-OS-729","PANW-PAN-OS-457"],"known_affected":["PANW-PAN-OS-440","PANW-PAN-OS-442","PANW-PAN-OS-731","PANW-PAN-OS-452","PANW-PAN-OS-455","PANW-PAN-OS-456"]},"notes":[{"category":"description","text":"NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero."}],"references":[{"category":"external","summary":"NVD - CVE-2015-8138","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8138"},{"category":"self","summary":"Palo Alto Networks Security Advisory PAN-SA-2016-0019","url":"https://security.paloaltonetworks.com/PAN-SA-2016-0019"}],"threats":[{"category":"impact","description":"NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero."}]},{"cve":"CVE-2015-7979","product_status":{"fixed":["PANW-PAN-OS-441","PANW-PAN-OS-443","PANW-PAN-OS-445","PANW-PAN-OS-453","PANW-PAN-OS-729","PANW-PAN-OS-457"],"known_affected":["PANW-PAN-OS-440","PANW-PAN-OS-442","PANW-PAN-OS-731","PANW-PAN-OS-452","PANW-PAN-OS-455","PANW-PAN-OS-456"]},"notes":[{"category":"description","text":"NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (client-server association tear down) by sending broadcast packets with invalid authentication to a broadcast client."}],"references":[{"category":"external","summary":"NVD - CVE-2015-7979","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-7979"},{"category":"self","summary":"Palo Alto Networks Security Advisory PAN-SA-2016-0019","url":"https://security.paloaltonetworks.com/PAN-SA-2016-0019"}],"threats":[{"category":"impact","description":"NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (client-server association tear down) by sending broadcast packets with invalid authentication to a broadcast client."}]},{"cve":"CVE-2015-7978","product_status":{"fixed":["PANW-PAN-OS-441","PANW-PAN-OS-443","PANW-PAN-OS-445","PANW-PAN-OS-453","PANW-PAN-OS-729","PANW-PAN-OS-457"],"known_affected":["PANW-PAN-OS-440","PANW-PAN-OS-442","PANW-PAN-OS-731","PANW-PAN-OS-452","PANW-PAN-OS-455","PANW-PAN-OS-456"]},"notes":[{"category":"description","text":"NTP before 4.2.8p6 and 4.3.0 before 4.3.90 allows a remote attackers to cause a denial of service (stack exhaustion) via an ntpdc relist command, which triggers recursive traversal of the restriction list."}],"references":[{"category":"external","summary":"NVD - CVE-2015-7978","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-7978"},{"category":"self","summary":"Palo Alto Networks Security Advisory PAN-SA-2016-0019","url":"https://security.paloaltonetworks.com/PAN-SA-2016-0019"}],"threats":[{"category":"impact","description":"NTP before 4.2.8p6 and 4.3.0 before 4.3.90 allows a remote attackers to cause a denial of service (stack exhaustion) via an ntpdc relist command, which triggers recursive traversal of the restriction list."}]},{"cve":"CVE-2015-7977","product_status":{"fixed":["PANW-PAN-OS-441","PANW-PAN-OS-443","PANW-PAN-OS-445","PANW-PAN-OS-453","PANW-PAN-OS-729","PANW-PAN-OS-457"],"known_affected":["PANW-PAN-OS-440","PANW-PAN-OS-442","PANW-PAN-OS-731","PANW-PAN-OS-452","PANW-PAN-OS-455","PANW-PAN-OS-456"]},"notes":[{"category":"description","text":"ntpd in NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (NULL pointer dereference) via a ntpdc reslist command."}],"references":[{"category":"external","summary":"NVD - CVE-2015-7977","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-7977"},{"category":"self","summary":"Palo Alto Networks Security Advisory PAN-SA-2016-0019","url":"https://security.paloaltonetworks.com/PAN-SA-2016-0019"}],"threats":[{"category":"impact","description":"ntpd in NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (NULL pointer dereference) via a ntpdc reslist command."}]},{"cve":"CVE-2015-7976","product_status":{"fixed":["PANW-PAN-OS-441","PANW-PAN-OS-443","PANW-PAN-OS-445","PANW-PAN-OS-453","PANW-PAN-OS-729","PANW-PAN-OS-457"],"known_affected":["PANW-PAN-OS-440","PANW-PAN-OS-442","PANW-PAN-OS-731","PANW-PAN-OS-452","PANW-PAN-OS-455","PANW-PAN-OS-456"]},"notes":[{"category":"description","text":"The ntpq saveconfig command in NTP 4.1.2, 4.2.x before 4.2.8p6, 4.3, 4.3.25, 4.3.70, and 4.3.77 does not properly filter special characters, which allows attackers to cause unspecified impact via a crafted filename."}],"references":[{"category":"external","summary":"NVD - CVE-2015-7976","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-7976"},{"category":"self","summary":"Palo Alto Networks Security Advisory PAN-SA-2016-0019","url":"https://security.paloaltonetworks.com/PAN-SA-2016-0019"}],"threats":[{"category":"impact","description":"The ntpq saveconfig command in NTP 4.1.2, 4.2.x before 4.2.8p6, 4.3, 4.3.25, 4.3.70, and 4.3.77 does not properly filter special characters, which allows attackers to cause unspecified impact via a crafted filename."}]},{"cve":"CVE-2015-7975","product_status":{"fixed":["PANW-PAN-OS-441","PANW-PAN-OS-443","PANW-PAN-OS-445","PANW-PAN-OS-453","PANW-PAN-OS-729","PANW-PAN-OS-457"],"known_affected":["PANW-PAN-OS-440","PANW-PAN-OS-442","PANW-PAN-OS-731","PANW-PAN-OS-452","PANW-PAN-OS-455","PANW-PAN-OS-456"]},"notes":[{"category":"description","text":"The nextvar function in NTP before 4.2.8p6 and 4.3.x before 4.3.90 does not properly validate the length of its input, which allows an attacker to cause a denial of service (application crash)."}],"references":[{"category":"external","summary":"NVD - CVE-2015-7975","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-7975"},{"category":"self","summary":"Palo Alto Networks Security Advisory PAN-SA-2016-0019","url":"https://security.paloaltonetworks.com/PAN-SA-2016-0019"}],"threats":[{"category":"impact","description":"The nextvar function in NTP before 4.2.8p6 and 4.3.x before 4.3.90 does not properly validate the length of its input, which allows an attacker to cause a denial of service (application crash)."}]},{"cve":"CVE-2015-7974","product_status":{"fixed":["PANW-PAN-OS-441","PANW-PAN-OS-443","PANW-PAN-OS-445","PANW-PAN-OS-453","PANW-PAN-OS-729","PANW-PAN-OS-457"],"known_affected":["PANW-PAN-OS-440","PANW-PAN-OS-442","PANW-PAN-OS-731","PANW-PAN-OS-452","PANW-PAN-OS-455","PANW-PAN-OS-456"]},"notes":[{"category":"description","text":"NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a \"skeleton key.\""}],"references":[{"category":"external","summary":"NVD - CVE-2015-7974","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-7974"},{"category":"self","summary":"Palo Alto Networks Security Advisory PAN-SA-2016-0019","url":"https://security.paloaltonetworks.com/PAN-SA-2016-0019"}],"threats":[{"category":"impact","description":"NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a \"skeleton key.\""}]},{"cve":"CVE-2015-7973","product_status":{"fixed":["PANW-PAN-OS-441","PANW-PAN-OS-443","PANW-PAN-OS-445","PANW-PAN-OS-453","PANW-PAN-OS-729","PANW-PAN-OS-457"],"known_affected":["PANW-PAN-OS-440","PANW-PAN-OS-442","PANW-PAN-OS-731","PANW-PAN-OS-452","PANW-PAN-OS-455","PANW-PAN-OS-456"]},"notes":[{"category":"description","text":"NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network."}],"references":[{"category":"external","summary":"NVD - CVE-2015-7973","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-7973"},{"category":"self","summary":"Palo Alto Networks Security Advisory PAN-SA-2016-0019","url":"https://security.paloaltonetworks.com/PAN-SA-2016-0019"}],"threats":[{"category":"impact","description":"NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network."}]}]}