title: SRX Series: Crafted packets destined to fxp0 management interface on SRX340/SRX345 devices can lead to DoS
description: Crafted packets destined to the management interface (fxp0) of an SRX340 or SRX345 services gateway may create a denial of service (DoS) condition due to buffer space exhaustion. This issue only affects the SRX340 and SRX345 services gateways. No other products or platforms are affected by this vulnerability. Affected releases are Juniper Networks Junos OS: 15.1X49 versions prior to 15.1X49-D160 on SRX340/SRX345; 17.3 on SRX340/SRX345; 17.4 versions prior to 17.4R2-S3, 17.4R3 on SRX340/SRX345; 18.1 versions prior to 18.1R3-S1 on SRX340/SRX345; 18.2 versions prior to 18.2R2 on SRX340/SRX345; 18.3 versions prior to 18.3R1-S2, 18.3R2 on SRX340/SRX345. This issue does not affect Junos OS releases prior to 15.1X49 on any platform.
problem types: CWE-400 Uncontrolled Resource Consumption
affected:
{
platforms: SRX340/SRX345
product: Junos OS
vendor: Juniper Networks
versions:
status: affected, version: 17.3
lessThan: 15.1X49-D160, status: affected, version: 15.1X49, versionType: custom
lessThan: 17.4R2-S3, 17.4R3, status: affected, version: 17.4, versionType: custom
lessThan: 18.1R3-S1, status: affected, version: 18.1, versionType: custom
lessThan: 18.2R2, status: affected, version: 18.2, versionType: custom
lessThan: 18.3R1-S2, 18.3R2, status: affected, version: 18.3, versionType: custom
lessThan: 15.1X49, status: unaffected, version: all, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: ADJACENT_NETWORK
availabilityImpact: HIGH
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.0
]
exploits: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
The following log message may be displayed when the device is in this condition:
octagl_output:1093: out of buf
octagl_output:1093: out of buf
octagl_output:1093: out of buf
Administrators can monitor buffer space utilization by executing the command:
request pfe execute target fwdd command "show octeon fpa buffers"
================ cluster1.node0 ================
SENT: Ukern command: show octeon fpa buffers
FPA 0: Avail:   23632, Errors:         0
FPA 1: Avail:   22444, Errors:         0
FPA 2: Avail:       0, Errors:         0
FPA 3: Avail:     135, Errors:         0
FPA 4: Avail:       0, Errors:         0
solutions: The following software releases have been updated to resolve this specific issue: Junos OS 15.1X49-D160, 17.4R2-S3, 17.4R3, 18.1R3-S1, 18.2R2, 18.3R1-S2, 18.3R2, 18.4R1, and all subsequent releases.
workarounds: There are no known workarounds for this issue.