JuniperCVELIST:CVE-2021-0280CVE-2021-0280 Junos OS: PTX Series, QFX10K Series: Upon receipt of specific packets BFD sessions might flap due to DDoS policer implementation in Packet Forwarding Engine
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
42.6%
Due to an Improper Initialization vulnerability in Juniper Networks Junos OS on PTX platforms and QFX10K Series with Paradise (PE) chipset-based line cards, ddos-protection configuration changes made from the CLI will not take effect as expected beyond the default DDoS (Distributed Denial of Service) settings in the Packet Forwarding Engine (PFE). This may cause BFD sessions to flap when a high rate of specific packets are received. Flapping of BFD sessions in turn may impact routing protocols and network stability, leading to a Denial of Service (DoS) condition. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects only the following platforms with Paradise (PE) chipset-based line cards: PTX1000, PTX3000 (NextGen), PTX5000, PTX10008, PTX10016 Series and QFX10002 Series. This issue affects: Juniper Networks Junos OS 17.4 versions prior to 17.4R3-S5 on PTX Series, QFX10K Series; 18.2 versions prior to 18.2R3-S8 on PTX Series, QFX10K Series; 18.3 versions prior to 18.3R3-S5 on PTX Series, QFX10K Series; 18.4 versions prior to 18.4R2-S8 on PTX Series, QFX10K Series; 19.1 versions prior to 19.1R3-S5 on PTX Series, QFX10K Series; 19.2 versions prior to 19.2R3-S2 on PTX Series, QFX10K Series; 19.3 versions prior to 19.3R3-S2 on PTX Series, QFX10K Series; 19.4 versions prior to 19.4R3-S2 on PTX Series, QFX10K Series; 20.1 versions prior to 20.1R3 on PTX Series, QFX10K Series; 20.2 versions prior to 20.2R2-S3, 20.2R3 on PTX Series, QFX10K Series; 20.3 versions prior to 20.3R2 on PTX Series, QFX10K Series; 20.4 versions prior to 20.4R2 on PTX Series, QFX10K Series.
CNA Affected
[
{
"platforms": [
"PTX Series, QFX10K Series"
],
"product": "Junos OS",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "17.4R3-S5",
"status": "affected",
"version": "17.4",
"versionType": "custom"
},
{
"lessThan": "18.2R3-S8",
"status": "affected",
"version": "18.2",
"versionType": "custom"
},
{
"lessThan": "18.3R3-S5",
"status": "affected",
"version": "18.3",
"versionType": "custom"
},
{
"lessThan": "18.4R2-S8",
"status": "affected",
"version": "18.4",
"versionType": "custom"
},
{
"lessThan": "19.1R3-S5",
"status": "affected",
"version": "19.1",
"versionType": "custom"
},
{
"lessThan": "19.2R3-S2",
"status": "affected",
"version": "19.2",
"versionType": "custom"
},
{
"lessThan": "19.3R3-S2",
"status": "affected",
"version": "19.3",
"versionType": "custom"
},
{
"lessThan": "19.4R3-S2",
"status": "affected",
"version": "19.4",
"versionType": "custom"
},
{
"lessThan": "20.1R3",
"status": "affected",
"version": "20.1",
"versionType": "custom"
},
{
"lessThan": "20.2R2-S3, 20.2R3",
"status": "affected",
"version": "20.2",
"versionType": "custom"
},
{
"lessThan": "20.3R2, 20.3R3",
"status": "affected",
"version": "20.3",
"versionType": "custom"
},
{
"lessThan": "20.4R2",
"status": "affected",
"version": "20.4",
"versionType": "custom"
}
]
}
]References
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
42.6%