An Improper Validation of Syntactic Correctness of Input vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). If a BGP update is received over an established BGP session which contains a tunnel encapsulation attribute with a specifically malformed TLV, rpd will crash and restart. This issue affects Juniper Networks Junos OS: * 20.4 versions 20.4R1 and later versions earlier than 20.4R3-S9; * 21.2 versions earlier than 21.2R3-S7; * 21.3 versions earlier than 21.3R3-S5; * 21.4 versions earlier than 21.4R3-S5; * 22.1 versions earlier than 22.1R3-S4; * 22.2 versions earlier than 22.2R3-S3; * 22.3 versions earlier than 22.3R3-S1; * 22.4 versions earlier than 22.4R3; * 23.2 versions earlier than 23.2R1-S2, 23.2R2; Junos OS Evolved: * 20.4-EVO versions 20.4R1-EVO and later versions earlier than 20.4R3-S9-EVO; * 21.2-EVO versions earlier than 21.2R3-S7-EVO; * 21.3-EVO versions earlier than 21.3R3-S5-EVO; * 21.4-EVO versions earlier than 21.4R3-S5-EVO; * 22.1-EVO versions earlier than 22.1R3-S4-EVO; * 22.2-EVO versions earlier than 22.2R3-S3-EVO; * 22.3-EVO versions earlier than 22.3R3-S1-EVO; * 22.4-EVO versions earlier than 22.4R3-EVO; * 23.2-EVO versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO; This issue does not affect Juniper Networks * Junos OS versions earlier than 20.4R1; * Junos OS Evolved versions earlier than 20.4R1-EVO. This is a related but separate issue than the one described in JSA79095.

• http://supportportal.juniper.net/JSA75739
• https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
• http://supportportal.juniper.net/JSA75739
• https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

• Juniper » Junos » Version: 20.4
  cpe:2.3:o:juniper:junos:20.4
• Juniper » Junos » Version: 21.2
  cpe:2.3:o:juniper:junos:21.2
• Juniper » Junos » Version: 21.3
  cpe:2.3:o:juniper:junos:21.3
• Juniper » Junos » Version: 21.4
  cpe:2.3:o:juniper:junos:21.4
• Juniper » Junos » Version: 22.1
  cpe:2.3:o:juniper:junos:22.1
• Juniper » Junos » Version: 22.2
  cpe:2.3:o:juniper:junos:22.2
• Juniper » Junos » Version: 22.3
  cpe:2.3:o:juniper:junos:22.3
• Juniper » Junos » Version: 22.4
  cpe:2.3:o:juniper:junos:22.4
• Juniper » Junos » Version: 23.2
  cpe:2.3:o:juniper:junos:23.2
• Juniper » Junos Os Evolved » Version: 20.4
  cpe:2.3:o:juniper:junos_os_evolved:20.4
• Juniper » Junos Os Evolved » Version: 21.2
  cpe:2.3:o:juniper:junos_os_evolved:21.2
• Juniper » Junos Os Evolved » Version: 21.3
  cpe:2.3:o:juniper:junos_os_evolved:21.3
• Juniper » Junos Os Evolved » Version: 21.4
  cpe:2.3:o:juniper:junos_os_evolved:21.4
• Juniper » Junos Os Evolved » Version: 22.1
  cpe:2.3:o:juniper:junos_os_evolved:22.1
• Juniper » Junos Os Evolved » Version: 22.2
  cpe:2.3:o:juniper:junos_os_evolved:22.2
• Juniper » Junos Os Evolved » Version: 22.3
  cpe:2.3:o:juniper:junos_os_evolved:22.3
• Juniper » Junos Os Evolved » Version: 22.4
  cpe:2.3:o:juniper:junos_os_evolved:22.4
• Juniper » Junos Os Evolved » Version: 23.2
  cpe:2.3:o:juniper:junos_os_evolved:23.2