JuniperCVELIST:CVE-2020-1687CVE-2020-1687 Junos OS: EX4300-MP/EX4600/QFX5K Series: High CPU load due to receipt of specific layer 2 frames in EVPN-VXLAN deployment.
6.5 Medium
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
25.2%
On Juniper Networks EX4300-MP Series, EX4600 Series and QFX5K Series deployed in (Ethernet VPN) EVPN-(Virtual Extensible LAN) VXLAN configuration, receipt of a stream of specific VXLAN encapsulated layer 2 frames can cause high CPU load, which could lead to network protocol operation issue and traffic interruption. This issue affects devices that are configured as a Layer 2 or Layer 3 gateway of an EVPN-VXLAN deployment. The offending layer 2 frames that cause the issue originate from a different access switch that get encapsulated within the same EVPN-VXLAN domain. This issue affects Juniper Networks Junos OS on EX4300-MP Series, EX4600 Series and QFX5K Series: 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R2-S2, 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R2-S1, 19.2R3; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S1, 19.4R3; 20.1 versions prior to 20.1R1-S3, 20.1R2.
CNA Affected
[
{
"platforms": [
"EX4300-MP Series, EX4600Series, QFX5K Series"
],
"product": "Junos OS",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "17.3R3-S9",
"status": "affected",
"version": "17.3",
"versionType": "custom"
},
{
"lessThan": "17.4R2-S11, 17.4R3-S2, 17.4R3-S3",
"status": "affected",
"version": "17.4",
"versionType": "custom"
},
{
"lessThan": "18.1R3-S11",
"status": "affected",
"version": "18.1",
"versionType": "custom"
},
{
"lessThan": "18.2R3-S5",
"status": "affected",
"version": "18.2",
"versionType": "custom"
},
{
"lessThan": "18.3R2-S4, 18.3R3-S3",
"status": "affected",
"version": "18.3",
"versionType": "custom"
},
{
"lessThan": "18.4R2-S5, 18.4R3-S4",
"status": "affected",
"version": "18.4",
"versionType": "custom"
},
{
"lessThan": "19.1R2-S2, 19.1R3-S2",
"status": "affected",
"version": "19.1",
"versionType": "custom"
},
{
"lessThan": "19.2R1-S5, 19.2R2-S1, 19.2R3",
"status": "affected",
"version": "19.2",
"versionType": "custom"
},
{
"lessThan": "19.3R2-S4, 19.3R3",
"status": "affected",
"version": "19.3",
"versionType": "custom"
},
{
"lessThan": "19.4R1-S3, 19.4R2-S1, 19.4R3",
"status": "affected",
"version": "19.4",
"versionType": "custom"
},
{
"lessThan": "20.1R1-S3, 20.1R2",
"status": "affected",
"version": "20.1",
"versionType": "custom"
}
]
}
]References
Related
6.5 Medium
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
25.2%