CVE-2022-22186

Summary

Due to an Improper Initialization vulnerability in Juniper Networks Junos OS on EX4650 devices, packets received on the management interface (em0) but not destined to the device, may be improperly forwarded to an egress interface, instead of being discarded. Such traffic being sent by a client may appear genuine, but is non-standard in nature and should be considered as potentially malicious. This issue affects: Juniper Networks Junos OS on EX4650 Series: All versions prior to 19.1R3-S8; 19.2 versions prior to 19.2R3-S5; 19.3 versions prior to 19.3R3-S5; 19.4 versions prior to 19.4R3-S7; 20.1 versions prior to 20.1R3-S3; 20.2 versions prior to 20.2R3-S4; 20.3 versions prior to 20.3R3-S3; 20.4 versions prior to 20.4R3-S2; 21.1 versions prior to 21.1R3-S1; 21.2 versions prior to 21.2R3; 21.3 versions prior to 21.3R2; 21.4 versions prior to 21.4R2; 22.1 versions prior to 22.1R1.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OSunspecified < 19.1R3-S8affected
Juniper NetworksJunos OS19.2 < 19.2R3-S5affected
Juniper NetworksJunos OS19.3 < 19.3R3-S5affected
Juniper NetworksJunos OS19.4 < 19.4R3-S7affected
Juniper NetworksJunos OS20.1 < 20.1R3-S3affected
Juniper NetworksJunos OS20.2 < 20.2R3-S4affected
Juniper NetworksJunos OS20.3 < 20.3R3-S3affected
Juniper NetworksJunos OS20.4 < 20.4R3-S2affected
Juniper NetworksJunos OS21.1 < 21.1R3-S1affected
Juniper NetworksJunos OS21.2 < 21.2R3affected
Juniper NetworksJunos OS21.3 < 21.3R2affected
Juniper NetworksJunos OS21.4 < 21.4R2affected

Weaknesses

  • CWE-665: CWE-665 Improper Initialization

Workarounds

Disabling the net.transit_re sysctl flag will also cause management traffic forwarded to the PFE ports to be dropped: % sysctl -w net.transit_re=0

Note that sysctl flags do not survive a reboot.

ADP Enrichment

CVE Program Container

Additional References

References