6.5 Medium
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
0.001 Low
EPSS
Percentile
31.4%
An Improper Control of a Resource Through its Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS). When there is a continuous mac move a memory corruption causes one or more FPCs to crash and reboot. These MAC moves can be between two local interfaces or between core/EVPN and local interface. The below error logs can be seen in PFE syslog when this issue happens: xss_event_handler(1071): EA[0:0]_PPE 46.xss[0] ADDR Error. ppe_error_interrupt(4298): EA[0:0]_PPE 46 Errors sync xtxn error xss_event_handler(1071): EA[0:0]_PPE 1.xss[0] ADDR Error. ppe_error_interrupt(4298): EA[0:0]_PPE 1 Errors sync xtxn error xss_event_handler(1071): EA[0:0]_PPE 2.xss[0] ADDR Error. This issue affects Juniper Networks Junos OS on MX Series: All versions prior to 15.1R7-S13; 19.1 versions prior to 19.1R3-S9; 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S6; 19.4 versions prior to 19.4R2-S7, 19.4R3-S8; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S2; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R3; 21.3 versions prior to 21.3R2.
[
{
"vendor": "Juniper Networks",
"product": "Junos OS",
"versions": [
{
"version": "unspecified",
"lessThan": "15.1R7-S13",
"status": "affected",
"versionType": "custom"
},
{
"version": "19.1",
"status": "affected",
"lessThan": "19.1R3-S9",
"versionType": "custom"
},
{
"version": "19.2",
"status": "affected",
"lessThan": "19.2R3-S6",
"versionType": "custom"
},
{
"version": "19.3",
"status": "affected",
"lessThan": "19.3R3-S6",
"versionType": "custom"
},
{
"version": "19.4",
"status": "affected",
"lessThan": "19.4R2-S7, 19.4R3-S8",
"versionType": "custom"
},
{
"version": "20.1R1",
"status": "affected",
"lessThan": "20.1*",
"versionType": "custom"
},
{
"version": "20.2",
"status": "affected",
"lessThan": "20.2R3-S5",
"versionType": "custom"
},
{
"version": "20.3",
"status": "affected",
"lessThan": "20.3R3-S5",
"versionType": "custom"
},
{
"version": "20.4",
"status": "affected",
"lessThan": "20.4R3-S2",
"versionType": "custom"
},
{
"version": "21.1",
"status": "affected",
"lessThan": "21.1R3",
"versionType": "custom"
},
{
"version": "21.2",
"status": "affected",
"lessThan": "21.2R3",
"versionType": "custom"
},
{
"version": "21.3",
"status": "affected",
"lessThan": "21.3R2",
"versionType": "custom"
}
],
"platforms": [
"MX Series"
]
}
]
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