JuniperCVELIST:CVE-2021-31353CVE-2021-31353 Junos OS and Junos OS Evolved: RPD core upon receipt of specific BGP update
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
46.5%
An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an attacker to inject a specific BGP update, causing the routing protocol daemon (RPD) to crash and restart, leading to a Denial of Service (DoS). Continued receipt and processing of the BGP update will create a sustained Denial of Service (DoS) condition. This issue affects very specific versions of Juniper Networks Junos OS: 19.3R3-S2; 19.4R3-S3; 20.2 versions 20.2R2-S3 and later, prior to 20.2R3-S2; 20.3 versions 20.3R2 and later, prior to 20.3R3; 20.4 versions 20.4R2 and later, prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS 20.1 is not affected by this issue. This issue also affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S3-EVO, 20.4R3-EVO; 21.1-EVO versions prior to 21.1R2-EVO; 21.2-EVO versions prior to 21.2R2-EVO.
CNA Affected
[
{
"product": "Junos OS",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "19.3R3-S2",
"status": "unaffected",
"version": "unspecified",
"versionType": "custom"
},
{
"status": "affected",
"version": "19.3R3-S2"
},
{
"status": "affected",
"version": "19.4R3-S3"
},
{
"lessThan": "20.1*",
"status": "unaffected",
"version": "20.1R1",
"versionType": "custom"
},
{
"changes": [
{
"at": "20.2R3-S2",
"status": "unaffected"
}
],
"lessThan": "20.2R2-S3",
"status": "unaffected",
"version": "20.2",
"versionType": "custom"
},
{
"changes": [
{
"at": "20.3R3",
"status": "unaffected"
}
],
"lessThan": "20.3R2",
"status": "unaffected",
"version": "20.3",
"versionType": "custom"
},
{
"changes": [
{
"at": "20.4R3",
"status": "unaffected"
}
],
"lessThan": "20.4R2",
"status": "unaffected",
"version": "20.4",
"versionType": "custom"
},
{
"lessThan": "21.1R2",
"status": "affected",
"version": "21.1",
"versionType": "custom"
}
]
},
{
"product": "Junos OS Evolved",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "20.4R2-S3-EVO, 20.4R3-EVO",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "21.1R2-EVO",
"status": "affected",
"version": "21.1-EVO",
"versionType": "custom"
},
{
"lessThan": "21.2R2-EVO",
"status": "affected",
"version": "21.2-EVO",
"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
46.5%