JuniperCVELIST:CVE-2020-1641CVE-2020-1641 Junos OS: A race condition on receipt of crafted LLDP packets leads to a memory leak and an LLDP crash.
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
25.0%
A Race Condition vulnerability in Juniper Networks Junos OS LLDP implementation allows an attacker to cause LLDP to crash leading to a Denial of Service (DoS). This issue occurs when crafted LLDP packets are received by the device from an adjacent device. Multiple LACP flaps will occur after LLDP crashes. An indicator of compromise is to evaluate log file details for lldp with RLIMIT. Intervention should occur before 85% threshold of used KB versus maximum available KB memory is reached. show log messages | match RLIMIT | match lldp | last 20 Matching statement is " /kernel: %KERNEL-[number]: Process ([pid #],lldpd) has exceeded 85% of RLIMIT_DATA: " with [] as variable data to evaluate for. This issue affects: Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S15; 12.3X48 versions prior to 12.3X48-D95; 15.1 versions prior to 15.1R7-S6; 15.1X49 versions prior to 15.1X49-D200; 15.1X53 versions prior to 15.1X53-D593; 16.1 versions prior to 16.1R7-S7; 17.1 versions prior to 17.1R2-S11, 17.1R3-S2; 17.2 versions prior to 17.2R1-S9, 17.2R3-S3; 17.3 versions prior to 17.3R2-S5, 17.3R3-S6; 17.4 versions prior to 17.4R2-S4, 17.4R3; 18.1 versions prior to 18.1R3-S5; 18.2 versions prior to 18.2R2-S7, 18.2R3; 18.2X75 versions prior to 18.2X75-D12, 18.2X75-D33, 18.2X75-D50, 18.2X75-D420; 18.3 versions prior to 18.3R1-S7, 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R1-S5, 18.4R2; 19.1 versions prior to 19.1R1-S4, 19.1R2.
CNA Affected
[
{
"product": "Junos OS",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "12.3R12-S15",
"status": "affected",
"version": "12.3",
"versionType": "custom"
},
{
"lessThan": "12.3X48-D95",
"status": "affected",
"version": "12.3X48",
"versionType": "custom"
},
{
"lessThan": "15.1R7-S6",
"status": "affected",
"version": "15.1",
"versionType": "custom"
},
{
"lessThan": "15.1X49-D200",
"status": "affected",
"version": "15.1X49",
"versionType": "custom"
},
{
"lessThan": "15.1X53-D593",
"status": "affected",
"version": "15.1X53",
"versionType": "custom"
},
{
"lessThan": "16.1R7-S7",
"status": "affected",
"version": "16.1",
"versionType": "custom"
},
{
"lessThan": "17.1R2-S11, 17.1R3-S2",
"status": "affected",
"version": "17.1",
"versionType": "custom"
},
{
"lessThan": "17.2R1-S9, 17.2R3-S3",
"status": "affected",
"version": "17.2",
"versionType": "custom"
},
{
"lessThan": "17.3R2-S5, 17.3R3-S6",
"status": "affected",
"version": "17.3",
"versionType": "custom"
},
{
"lessThan": "17.4R2-S4, 17.4R3",
"status": "affected",
"version": "17.4",
"versionType": "custom"
},
{
"lessThan": "18.1R3-S5",
"status": "affected",
"version": "18.1",
"versionType": "custom"
},
{
"lessThan": "18.2R2-S7, 18.2R3",
"status": "affected",
"version": "18.2",
"versionType": "custom"
},
{
"lessThan": "18.2X75-D12, 18.2X75-D33, 18.2X75-D50, 18.2X75-D420",
"status": "affected",
"version": "18.2X75",
"versionType": "custom"
},
{
"lessThan": "18.3R1-S7, 18.3R2-S3, 18.3R3",
"status": "affected",
"version": "18.3",
"versionType": "custom"
},
{
"lessThan": "18.4R1-S5, 18.4R2",
"status": "affected",
"version": "18.4",
"versionType": "custom"
},
{
"lessThan": "19.1R1-S4, 19.1R2",
"status": "affected",
"version": "19.1",
"versionType": "custom"
}
]
}
]References
Related
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
25.0%