Vulnerability Details : CVE-2018-0026
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.
Products affected by CVE-2018-0026
- cpe:2.3:o:juniper:junos:15.1:r6:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1:r5:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x8:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-0026
0.28%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 68 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-0026
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
3.9
|
3.6
|
NIST | |
4.7
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N |
2.8
|
1.4
|
Juniper Networks, Inc. |
References for CVE-2018-0026
-
http://www.securitytracker.com/id/1041315
Juniper Junos Reboot Issue Lets Remote Users Bypass the Firewall - SecurityTrackerThird Party Advisory;VDB Entry
-
https://kb.juniper.net/JSA10859
Juniper Networks - 2018-07 Security Bulletin: Junos OS: Stateless IP firewall filter rules stop working as expected after reboot or upgrade (CVE-2018-0026)Vendor Advisory
-
http://www.securityfocus.com/bid/104720
Juniper Junos CVE-2018-0026 Security Bypass VulnerabilityThird Party Advisory;VDB Entry
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