CVE-2018-0026

Junos OS: Stateless IP firewall filter rules stop working as expected after reboot or upgrade

MEDIUM
4.7
CVSS Score
Published: July 11, 2018 at 06:00 PM UTC
Updated: June 17, 2026 at 01:29 AM UTC
1 product affected across 1 vendorJunos

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Severity
MEDIUM4.7
Exploit prediction
EPSS 2%

Description

After Junos OS device reboot or upgrade, the stateless firewall filter configuration may not take effect. This issue can be verified by running the command: user@re0> show interfaces <interface_name> extensive | match filters" CAM destination filters: 0, CAM source filters: 0 Note: when the issue occurs, it does not show the applied firewall filter. The correct output should show the applied firewall filter, for example: user@re0> show interfaces <interface_name> extensive | match filters" CAM destination filters: 0, CAM source filters: 0 Input Filters: FIREWAL_FILTER_NAME-<interface_name> This issue affects firewall filters for every address family. Affected releases are Juniper Networks Junos OS: 15.1R4, 15.1R5, 15.1R6 and SRs based on these MRs. 15.1X8 versions prior to 15.1X8.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Affected range stops below 15.1X8.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/104720
VDB Entryx_refsource_SECTRACKThird Party Advisory
http://www.securitytracker.com/id/1041315
x_refsource_CONFIRMVendor Advisory
https://kb.juniper.net/JSA10859

CVSS

4.7MEDIUMjuniper
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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