"value":"An\u00a0Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper Networks Junos OS and Junos OS Evolved within cRPD allows an unauthenticated network-based attacker sending crafted TCP traffic to the routing engine (RE) to cause a CPU-based Denial of Service (DoS).\n\nIf specially crafted TCP traffic is received by the control plane, or a TCP session terminates unexpectedly, it will cause increased control plane CPU utilization by the rpd-server process.\n\nWhile not explicitly required, the impact is more severe when RIB sharding is enabled.\n\nTask accounting shows unexpected reads by the RPD Server jobs for shards:\n\nuser@junos> show task accounting detail\n...\nread:RPD Server.0.0.0.0+780.192.168.0.78+48886 TOT:00000003.00379787 MAX:00000000.00080516 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49144 TOT:00000004.00007565 MAX:00000000.00080360 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49694 TOT:00000003.00600584 MAX:00000000.00080463 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+50246 TOT:00000004.00346998 MAX:00000000.00080338 RUNS: 233888\\\n\n\n\nThis issue affects:\n\nJunos OS with cRPD:\u00a0\n\n * All versions before 21.2R3-S8,\u00a0\n * 21.4 before 21.4R3-S7,\u00a0\n * 22.1 before 22.1R3-S6,\u00a0\n * 22.2 before 22.2R3-S4,\u00a0\n * 22.3 before 22.3R3-S3,\u00a0\n * 22.4 before 22.4R3-S2,\u00a0\n * 23.2 before 23.2R2-S2,\u00a0\n * 24.2 before 24.2R2;\u00a0\n\n\nJunos OS Evolved with cRPD:\u00a0\n\n * All versions before 21.4R3-S7-EVO,\u00a0\n * 22.2 before 22.2R3-S4-EVO,\u00a0\n * 22.3 before 22.3R3-S3-EVO,\u00a0\n * 22.4 before 22.4R3-S2-EVO,\u00a0\n * 23.2 before 23.2R2-EVO."
}
]
},
"problemtype":{
"problemtype_data":[
{
"description":[
{
"lang":"eng",
"value":"CWE-755 Improper Handling of Exceptional Conditions",
"value":"rpd-server is enabled by default in cRPD. No specific configuration is required to be vulnerable to this issue.<br><br>BGP RIB sharding is enabled using the following configuration:<br><br><tt>[set system processes routing bgp rib-sharding]</tt>"
}
],
"value":"rpd-server is enabled by default in cRPD. No specific configuration is required to be vulnerable to this issue.\n\nBGP RIB sharding is enabled using the following configuration:\n\n[set system processes routing bgp rib-sharding]"
}
],
"work_around":[
{
"lang":"en",
"supportingMedia":[
{
"base64":false,
"type":"text/html",
"value":"There are no known workarounds for this issue."
}
],
"value":"There are no known workarounds for this issue."
}
],
"exploit":[
{
"lang":"en",
"supportingMedia":[
{
"base64":false,
"type":"text/html",
"value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
}
],
"value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
}
],
"solution":[
{
"lang":"en",
"supportingMedia":[
{
"base64":false,
"type":"text/html",
"value":"The following software releases have been updated to resolve this specific issue:<br><br>Junos OS 21.2R3-S8, 21.4R3-S7, 22.1R3-S6, 22.2R3-S4, 22.3R3-S3, 22.4R3-S2, 23.2R2-S2, 23.4R1, and all subsequent releases.<br>Junos OS Evolved 21.4R3-S7-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-S2-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases.<br><br>"
}
],
"value":"The following software releases have been updated to resolve this specific issue:\n\nJunos OS 21.2R3-S8, 21.4R3-S7, 22.1R3-S6, 22.2R3-S4, 22.3R3-S3, 22.4R3-S2, 23.2R2-S2, 23.4R1, and all subsequent releases.\nJunos OS Evolved 21.4R3-S7-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-S2-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases."
