7.4 High
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
0.0004 Low
EPSS
Percentile
12.6%
An Improper Check for Unusual or Exceptional Conditions vulnerability in the bbe-smgd of Juniper Networks Junos OS allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). In a Broadband Edge / Subscriber Management scenario on MX Series when a specifically malformed ICMP packet addressed to the device is received from a subscriber the bbe-smgd will crash, affecting the subscriber sessions that are connecting, updating, or terminating. Continued receipt of such packets will lead to a sustained DoS condition. When this issue happens the below log can be seen if the traceoptions for the processes smg-service are enabled: BBE_TRACE(TRACE_LEVEL_INFO, "%s: Dropped unsupported ICMP PKT … This issue affects Juniper Networks Junos OS on MX Series: All versions prior to 19.4R3-S11; 20.2 versions prior to 20.2R3-S7; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S6; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S4; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3-S2; 22.1 versions prior to 22.1R2-S2, 22.1R3; 22.2 versions prior to 22.2R2; 22.3 versions prior to 22.3R1-S2, 22.3R2.
[
{
"vendor": "Juniper Networks",
"product": "Junos OS",
"versions": [
{
"version": "unspecified",
"lessThan": "19.4R3-S11",
"status": "affected",
"versionType": "custom"
},
{
"version": "20.2",
"status": "affected",
"lessThan": "20.2R3-S7",
"versionType": "custom"
},
{
"version": "20.3",
"status": "affected",
"lessThan": "20.3R3-S6",
"versionType": "custom"
},
{
"version": "20.4",
"status": "affected",
"lessThan": "20.4R3-S6",
"versionType": "custom"
},
{
"version": "21.1",
"status": "affected",
"lessThan": "21.1R3-S4",
"versionType": "custom"
},
{
"version": "21.2",
"status": "affected",
"lessThan": "21.2R3-S4",
"versionType": "custom"
},
{
"version": "21.3",
"status": "affected",
"lessThan": "21.3R3-S3",
"versionType": "custom"
},
{
"version": "21.4",
"status": "affected",
"lessThan": "21.4R3-S2",
"versionType": "custom"
},
{
"version": "22.1",
"status": "affected",
"lessThan": "22.1R2-S2, 22.1R3",
"versionType": "custom"
},
{
"version": "22.2",
"status": "affected",
"lessThan": "22.2R2",
"versionType": "custom"
},
{
"version": "22.3",
"status": "affected",
"lessThan": "22.3R1-S2, 22.3R2",
"versionType": "custom"
}
],
"platforms": [
"MX Series"
]
}
]
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