JuniperCVELIST:CVE-2023-36835CVE-2023-36835 Junos OS: QFX10000 Series: All traffic will be dropped after a specific valid IP packet has been received which needs to be routed over a VXLAN tunnel
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
23.0%
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on QFX10000 Series allows a network based attacker to cause a Denial of Service (DoS).
If a specific valid IP packet is received and that packet needs to be routed over a VXLAN tunnel, this will result in a PFE wedge condition due to which traffic gets impacted. As this is not a crash and restart scenario, this condition will persist until the system is rebooted to recover.
This issue affects Juniper Networks Junos OS on QFX10000:
20.3 version 20.3R1 and later versions;
20.4 versions prior to 20.4R3-S5;
21.1 versions prior to 21.1R3-S5;
21.2 versions prior to 21.2R3-S5;
21.3 versions prior to 21.3R3-S4;
21.4 versions prior to 21.4R3-S1;
22.1 versions prior to 22.1R3;
22.2 versions prior to 22.2R2;
22.3 versions prior to 22.3R1-S2, 22.3R2.
CNA Affected
[
{
"defaultStatus": "unaffected",
"platforms": [
"QFX10000 Series"
],
"product": "Junos OS",
"vendor": "Juniper Networks",
"versions": [
{
"changes": [
{
"at": "20.3R1",
"status": "affected"
}
],
"lessThan": "20.3*",
"status": "affected",
"version": "20.3",
"versionType": "custom"
},
{
"lessThan": "20.4R3-S5",
"status": "affected",
"version": "20.4",
"versionType": "custom"
},
{
"lessThan": "21.1R3-S5",
"status": "affected",
"version": "21.1",
"versionType": "custom"
},
{
"lessThan": "21.2R3-S5",
"status": "affected",
"version": "21.2",
"versionType": "custom"
},
{
"lessThan": "21.3R3-S4",
"status": "affected",
"version": "21.3",
"versionType": "custom"
},
{
"lessThan": "21.4R3-S1",
"status": "affected",
"version": "21.4",
"versionType": "custom"
},
{
"lessThan": "22.1R3",
"status": "affected",
"version": "22.1",
"versionType": "custom"
},
{
"lessThan": "22.2R2",
"status": "affected",
"version": "22.2",
"versionType": "custom"
},
{
"lessThan": "22.3R1-S2, 22.3R2",
"status": "affected",
"version": "22.3",
"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
23.0%