CVE-2021-31350
9 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.4 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
42.9%
An Improper Privilege Management vulnerability in the gRPC framework, used by the Juniper Extension Toolkit (JET) API on Juniper Networks Junos OS and Junos OS Evolved, allows a network-based, low-privileged authenticated attacker to perform operations as root, leading to complete compromise of the targeted system. The issue is caused by the JET service daemon (jsd) process authenticating the user, then passing configuration operations directly to the management daemon (mgd) process, which runs as root. This issue affects Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S8, 18.4R3-S8; 19.1 versions prior to 19.1R2-S3, 19.1R3-S5; 19.2 versions prior to 19.2R1-S7, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2. This issue does not affect Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-EVO; 21.1-EVO versions prior to 21.1R2-EVO.
Affected configurations
CNA Affected
[
{
"product": "Junos OS",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "18.4R1",
"status": "unaffected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "18.4R1-S8, 18.4R2-S8, 18.4R3-S8",
"status": "affected",
"version": "18.4",
"versionType": "custom"
},
{
"lessThan": "19.1R2-S3, 19.1R3-S5",
"status": "affected",
"version": "19.1",
"versionType": "custom"
},
{
"lessThan": "19.2R1-S7, 19.2R3-S2",
"status": "affected",
"version": "19.2",
"versionType": "custom"
},
{
"lessThan": "19.3R2-S6, 19.3R3-S2",
"status": "affected",
"version": "19.3",
"versionType": "custom"
},
{
"lessThan": "19.4R1-S4, 19.4R2-S4, 19.4R3-S3",
"status": "affected",
"version": "19.4",
"versionType": "custom"
},
{
"lessThan": "20.1R2-S2, 20.1R3",
"status": "affected",
"version": "20.1",
"versionType": "custom"
},
{
"lessThan": "20.2R2-S3, 20.2R3",
"status": "affected",
"version": "20.2",
"versionType": "custom"
},
{
"lessThan": "20.3R2-S1, 20.3R3",
"status": "affected",
"version": "20.3",
"versionType": "custom"
},
{
"lessThan": "20.4R2",
"status": "affected",
"version": "20.4",
"versionType": "custom"
}
]
},
{
"product": "Junos OS Evolved",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "20.4R2-EVO",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "21.1R2-EVO",
"status": "affected",
"version": "21.1-EVO",
"versionType": "custom"
}
]
}
]References
Related
9 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.4 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
42.9%