Vulnerability Name:

CVE-2018-0026 (CCN-146318)

Assigned:2017-11-16
Published:2018-07-11
Updated:2019-10-09
Summary: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.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): None
4.7 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N)
4.1 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2018-0026

Source: BID
Type: Third Party Advisory, VDB Entry
104720

Source: CCN
Type: BID-104720
Juniper Junos CVE-2018-0026 Security Bypass Vulnerability

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1041315

Source: XF
Type: UNKNOWN
juniper-junos-cve20180026-sec-bypass(146318)

Source: CCN
Type: Juniper Networks Security Bulletin JSA10859
Junos OS: Stateless IP firewall filter rules stop working as expected after reboot or upgrade (CVE-2018-0026)

Source: CONFIRM
Type: Vendor Advisory
https://kb.juniper.net/JSA10859

Vulnerable Configuration:Configuration 1:
  • cpe:/o:juniper:junos:15.1:r4:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1:r5:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1:r6:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1x8:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:juniper:junos:16.1:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    juniper junos 15.1 r4
    juniper junos 15.1 r5
    juniper junos 15.1 r6
    juniper junos 15.1x8
    juniper junos 16.1 -