CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/SC:N/VI:N/SI:N/VA:H/SA:L
EPSS
Percentile
17.0%
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).
When telemetry requests are sent to the device, and the Dynamic Rendering Daemon (drend) is suspended, the l2ald crashes and restarts due to factors outside the attackers control. Repeated occurrences of these events causes a sustained DoS condition.
This issue affects:
Junos OS:
Junos OS Evolved:
[
{
"defaultStatus": "unaffected",
"product": "Junos OS",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "20.4R3-S10",
"status": "affected",
"version": "20.4",
"versionType": "semver"
},
{
"lessThan": "21.2R3-S7",
"status": "affected",
"version": "21.2",
"versionType": "semver"
},
{
"lessThan": "21.4R3-S5",
"status": "affected",
"version": "21.4",
"versionType": "semver"
},
{
"lessThan": "22.1R3-S4",
"status": "affected",
"version": "22.1",
"versionType": "semver"
},
{
"lessThan": "22.2R3-S3",
"status": "affected",
"version": "22.2",
"versionType": "semver"
},
{
"lessThan": "22.3R3-S1",
"status": "affected",
"version": "22.3",
"versionType": "semver"
},
{
"lessThan": "22.4R3",
"status": "affected",
"version": "22.4",
"versionType": "semver"
},
{
"lessThan": "23.2R1-S2, 23.2R2",
"status": "affected",
"version": "23.2",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Junos OS Evolved",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "21.4R3-S5-EVO",
"status": "affected",
"version": "21.4-EVO",
"versionType": "semver"
},
{
"lessThan": "22.1R3-S4-EVO",
"status": "affected",
"version": "22.1-EVO",
"versionType": "semver"
},
{
"lessThan": "22.2R3-S3-EVO",
"status": "affected",
"version": "22.2-EVO",
"versionType": "semver"
},
{
"lessThan": "22.3R3-S1-EVO",
"status": "affected",
"version": "22.3-EVO",
"versionType": "semver"
},
{
"lessThan": "22.4R3-EVO",
"status": "affected",
"version": "22.4-EVO",
"versionType": "semver"
},
{
"lessThan": "23.2R2-EVO",
"status": "affected",
"version": "23.2-EVO",
"versionType": "semver"
}
]
}
]
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/SC:N/VI:N/SI:N/VA:H/SA:L
EPSS
Percentile
17.0%